Disclosed in the present invention is a recovery method for spent lithium battery materials. The recovery method comprises the following steps: (1) subjecting a battery powder obtained by disassembling cells of spent lithium batteries to ammonia leaching, and performing solid-liquid separation to obtain a leachate and filter residues; (2) adding a fluorine-phosphorus precipitating agent to the leachate obtained in step (1), and performing solid-liquid separation to obtain a filtrate in which fluorine-phosphorus residues are removed; (3) subjecting the filtrate obtained in step (2) to ammonia distillation and solid-liquid separation to obtain a filtrate and filter residues containing basic cupric carbonate and lithium carbonate; (4) washing the filter residues obtained in step (3) with water, and separating the basic cupric carbonate to obtain washing water containing lithium carbonate; and (5) subjecting the filter residues obtained in step (1) to reduction roasting, then washing same, adding the washing water obtained in step (4) thereto, extracting lithium by means of water leaching, and filtering same to obtain a lithium-extracted filtrate. The method can recover valuable metal in spent lithium battery materials without extraction, and thus improves the recovery rate of the valuable metal.
Disclosed in the present invention are a preparation method for and the use of a high-performance hard carbon material. The method comprises: mixing starch, a phosphate and water, impregnating same, and drying the resulting impregnated material to obtain impregnated starch; subjecting the impregnated starch to a heat treatment in an inert atmosphere to obtain starch-based carbon microspheres; and introducing a gas mixture of carbon dioxide and an inert gas into the starch-based carbon microspheres, and subjecting same to a carbonization reaction to obtain a hard carbon material. In the present invention, starch and a phosphate are mixed for a cross-linking reaction, N doping of the material is realized by introducing an amino group, the starch and the phosphate are carbonized after the cross-linking reaction, and the raw materials are all kept in a spherical shape during the whole process, thereby avoiding the problem of reduction in the specific capacity and the initial effect due to an increase in an SEI film caused by the production of foamy carbon blocks by means of direct carbonization.
Disclosed in the present invention are a preparation method for a closely coated cobalt oxide and the use thereof, the preparation method comprising: synthesizing spherical cobalt hydroxide particles by a coprecipitation method; after drying and dehydrating same, uniformly mixing same with zirconium alkyl carboxylate/aluminum alkyl carboxylate and zirconium hydroxide/aluminum hydroxide and coheating the mixture to enable the zirconium alkyl carboxylate/aluminum alkyl carboxylate and zirconium hydroxide/aluminum hydroxide to react with cobalt hydroxide on the surface layers of the particles, so as to tightly attach same to the surfaces of the cobalt hydroxide spherical particles; and finally, performing calcining to remove organic matters so as to form cobalt oxide spherical particles with closely coating layers on the surfaces. By using chemical bonds to connect the coating layers and a base material, the present invention makes the two more closely attached and not prone to pulverization and falling, thus greatly prolonging the service life of the coating layers, and improving cycle performance of the material.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p.ex. liants, charges
Provided in the present invention are a backflow unit and a sewage treatment system. The backflow unit comprises an input section, a treatment section and an output section, which are in communication in sequence, wherein the treatment section is used for carrying out a deoxidation treatment on a backflow substance, which is input by means of the input section; and the treatment section is at least partially located above an aeration port of an aeration apparatus, or the treatment section is arranged on a surface of the aeration apparatus in an attached manner. Since the input section, the treatment section and the output section are in communication in sequence, a backflow substance is input into the treatment section along the input section; the treatment section carries out a deoxidation treatment on the backflow substance, which is input by means of the input section; and the backflow substance, which has been subjected to the deoxidation treatment, flows to the output section, and is output by the output section into an anaerobic tank, such that the backflow substance, which has been subjected to the deoxidation treatment by the treatment section and which enters the anaerobic tank, has a relatively low dissolved oxygen (DO) concentration, thereby avoiding the increase of DO content in the anaerobic tank. Therefore, high DO affecting the release of phosphorus-accumulating bacteria in the anaerobic tank and the denitrification of NOx-N is prevented, and the nitrogen and phosphorus removal effect of the anaerobic tank is improved, such that the treatment effect in the anaerobic tank is relatively good.
Provided in the present application are a waste power battery cell and a disassembling method therefor. The disassembling method for the waste power battery cell comprises: fixing a waste power battery cell; carrying out ring cutting on a metal case of the waste power battery cell so as to form a surface defect area on the metal case of the waste power battery cell, surface defect ring grooves with preset depth being formed in both sides of the surface defect area, and the preset depth being smaller than the thickness of the metal case; cutting one edge of the surface defect area so as to form a warping structure on the surface defect area of the metal case; tearing the warping structure to tear off the surface defect area from the metal case; and taking out tabs and electrode coils of the waste power battery cell. The disassembling method for a waste power battery cell can avoid the problem of short circuit of the internal structure of the waste power battery cell and further avoid the problem of on-fire explosion or waste gas generated by combustion during the disassembling process of the battery, thereby improving safety and environmental protection of battery disassembling.
Provided in the present application are a new energy vehicle, and a CTP traction battery pack and an echelon disassembling method therefor. The echelon disassembling method for a CTP traction battery pack comprises: disassembling an upper cover plate assembly of a CTP traction battery pack; placing the CTP traction battery pack at a feeding position of a milling machine; performing a clamping operation on the CTP traction battery pack by means of a clamp; identifying electrode plate welding spots and electrode plate height information of the CTP traction battery pack by means of machine vision; acquiring the model of the CTP traction battery pack according to position information of the electrode plate welding spots and the electrode plate height information; calling a corresponding milling operation program according to the model of the CTP traction battery pack; according to the milling operation program, controlling the milling machine to mill and break electrode plates of the CTP traction battery pack in sequence; and freezing the CTP traction battery pack after the electrode plates are milled. Compared with the traditional manner of manually prying with a crowbar, manual intervention is reduced; moreover, the disassembling efficiency of a traction battery pack is improved, such that the disassembling process of a CTP traction battery pack is safer and more reliable, and the operation is simpler and more convenient.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
H01M 50/249 - Montures; Boîtiers secondaires ou cadres; Bâtis, modules ou blocs; Dispositifs de suspension; Amortisseurs; Dispositifs de transport ou de manutention; Supports spécialement adaptés aux aéronefs ou aux véhicules, p.ex. aux automobiles ou aux trains
7.
PREPARATION METHOD FOR AND USE OF LITHIUM IRON PHOSPHATE
Disclosed are a preparation method for and a use of lithium iron phosphate. The preparation method comprises: adding a mixed solution of ferrous salt and ammonium dihydrogen phosphate, a citric acid solution and a pH regulator in concurrent flow into a first reactor for reaction, extracting the material in the first reactor into a second reactor, and adding a copper salt solution and a sodium hydroxide solution into the second reactor for reaction, wherein the material in the second reactor flows back into the first reactor; and mixing the solid material obtained by the reaction with a lithium source, and putting the mixture in an ammonia gas flow for calcining to obtain lithium iron phosphate. According to the method, a lithium iron phosphate precursor of a spherical structure can be prepared, so that the electrochemical performance of the subsequently prepared lithium iron phosphate material is improved, and the lithium iron phosphate material has relatively high electrical conductivity.
A method for recycling lithium from lithium clay, comprising: roasting lithium clay powder for the first time, mixing the primary roasted material with an additive, grinding to obtain a ground material, mixing the ground material with acid, roasting for the second time, and adding a leaching agent into the secondary roasted material for leaching to obtain a leachate. Lithium extraction of the lithium clay is realized on the basis of primary roasting, high-energy grinding and secondary acidification roasting, and the structural hydroxyl in the clay ore is removed by means of one-time roasting, such that the lattice spacing of the clay ore is increased, and the deintercalation and exchange of lithium ions are facilitated; then the structure of the clay ore is further damaged by means of high-energy grinding, such that ion exchange occurs between Na+/K+and Li+ in the clay ore; the separated lithium is converted into soluble lithium salt by means of secondary acidification roasting, and meanwhile, the acid is used for deeply extracting lithium in the clay ore in the roasting process, and the process is suitable for leaching lithium from low-grade lithium clay.
Disclosed in the present invention are a preparation method for high-conductivity lithium iron phosphate and the use thereof. The preparation method comprises the following steps: mixing ammonium bismuth citrate, a phosphorus source, a lithium source, a ferrous source, a reducing agent and water; subjecting the resulting mixed solution to a hydrothermal reaction and solid-liquid separation to obtain a solid material; and calcining the solid material in an inert atmosphere to obtain high-conductivity lithium iron phosphate. In the present invention, ammonium bismuth citrate and a reducing agent are subjected to a redox reaction during the synthesis process to generate elemental bismuth, such that metal bismuth is dispersed into a synthesized lithium iron phosphate precipitate; therefore, the conductivity of the material is improved, and a high-conductivity lithium iron phosphate positive electrode material is obtained.
A method for recovering lithium and silicon from an MVR system slag sample, comprising the following steps: (1) acid-leaching the MVR system slag sample to obtain an acid-leached solution and acid-leaching residues; (2) adding an alkali solution to the acid-leached solution to adjust the pH value, so as to obtain a lithium solution; (3) evaporating and concentrating the lithium solution to obtain a concentrated lithium solution; (4) adding an alkali solution into the acid-leaching residues for alkali dissolution, and preparing a sodium carbonate solution from the obtained alkali-dissolved solution; (5) mixing the concentrated lithium solution with the sodium carbonate solution for high-temperature lithium precipitation reaction to obtain lithium carbonate slurry; (6) filter-pressing and washing the lithium carbonate slurry to obtain crude lithium carbonate, wherein the filtrate is a lithium precipitation mother liquor, and the lithium carbonate wash water is returned to step (3) as a lithium liquid; and (7) filter-pressing the decarburized and pH-adjusted lithium precipitation mother liquor to obtain filter residues and a pH-adjusted filtrate, wherein the filter residues are in the form of silicic acid gel, and the pH-justed filtrate is returned to step (3) as lithium liquid. The method enables effective recovery of lithium and silicon from the slag sample, and avoids resource waste.
Disclosed in the present invention are a management method platform for power battery recycling, and a management platform. The management platform is used for executing the management method. In the present invention, the number of comprehensive utilization standard packets, the number of recycling standard packets and the number of echelon utilization standard packets can be determined according to attribute information of target vehicles within the range of a target region; and the number of expected recycling standard packets of power batteries in the target region is further determined on the basis of the number of comprehensive utilization standard packets, the number of recycling standard packets and the number of echelon utilization standard packets, thereby facilitating efficient capacity prediction for battery recycling in a certain region.
G06Q 10/04 - Prévision ou optimisation spécialement adaptées à des fins administratives ou de gestion, p. ex. programmation linéaire ou "problème d’optimisation des stocks"
G06Q 50/06 - Fourniture d'électricité, de gaz ou d'eau
12.
FERROMAGNETIC OBJECT ACQUISITION DEVICE FOR LITHIUM BATTERY POSITIVE ELECTRODE MATERIAL WORKSHOP ENVIRONMENT
A ferromagnetic object acquisition device for a lithium battery positive electrode material workshop environment, comprising: a box wall of a collection box (100) is provided with an opening (110); a collection mechanism (200) is installed in the collection box (100), and comprises a magnetic attraction plate set (210) capable of moving relative to the opening (110), and when moving to the opening (110), the magnetic attraction plate set (210) is used for cooperating with the opening (110) to form a cover sealing state; an air suction mechanism (300) comprises a fan (310) and a first air duct plate (320), the first air duct plate (320) is mounted outside the opening (110), an air duct (330) is formed between the first air duct plate (320) and the magnetic attraction plate set (210) in the cover sealing state, and the fan (310) is mounted at one end of the air duct (330); a weighing mechanism (400) is mounted in the collection box (100); and a magnetic attraction mechanism (500) is mounted in the collection box (100). The magnetic attraction plate set (210) is used in cooperation with the air suction mechanism (300) to ingeniously form the air duct (330), thereby increasing the air pressure. The magnetic attraction plate set (210) serves as a part of the air duct (330), and a ferromagnetic object is fully separated from the air under the magnetic attraction effect of the magnetic attraction plate set (210). The overall structure is high in detection precision of the ferromagnetic object in the air.
G01N 5/00 - Analyse des matériaux par pesage, p.ex. pesage des fines particules séparées d'un gaz ou d'un liquide
G01N 1/02 - Dispositifs pour prélever des échantillons
G01G 17/04 - Appareils ou méthodes pour peser un produit ayant une forme ou des propriétés particulières pour peser des fluides, p.ex. des gaz, des produits pâteux
13.
POROUS IRON PHOSPHATE AND PREPARATION METHOD THEREFOR
A porous iron phosphate and a preparation method therefor. The preparation method comprises the following steps: (1) mixing a ferrophosphorus solution and an aluminum alkali solution for a co-precipitation reaction; (2) subjecting the material obtained in step (1) to solid-liquid separation, so as to obtain a precipitate; (3) reacting the precipitate prepared in step (2) with hydrogen phosphide under heating conditions; (4) after the reaction is finished, cooling the precipitate treated in step (3), and then adding the precipitate to a weak acid solution for soaking; and (5) subjecting the material obtained in step (4) to solid-liquid separation, and then performing aerobic calcination to obtain the product.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p.ex. phosphates, silicates ou borates
14.
METHOD FOR PREPARING TERNARY CATHODE MATERIAL FROM MOLTEN SALT AND USE THEREOF
Provided are a method for preparing a ternary cathode material from a molten salt and use thereof. The method comprises: mixing a nickel salt, a cobalt salt, a manganese salt, a metal oxide, and an acid solution to obtain a mixed salt solution; adding the mixed salt solution, a sodium hydroxide solution and ammonia water into a base solution in a manner of parallel flow for reaction to obtain a precursor; mixing and roasting the precursor, a lithium source and a molten salt, washing a roasted material with water, and then carrying out an annealing treatment to obtain the ternary cathode material. Firstly, a bismuth/antimony-doped ternary precursor is prepared, and then a molten salt method is utilized for sintering, during which a bismuth/antimony oxide is melted in the molten salt; washing is carried out with water to remove the residual molten salt, and the residual bismuth/antimony oxide is subjected to an annealing reaction to form a cladding layer on the surface of the material, so that the cycling performance of the material is improved.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/48 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p.ex. liants, charges
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
xy1-x-y22, where 0.5≤x≤0.85, and 0.05≤y≤0.25. The large-particle-size single-crystal ternary positive electrode material is in the form of single-crystal particles, and has a smooth surface, the D50 of the particles is 5.0-10.0 μm, and the specific surface area thereof is 0.3-0.8 cm2/g. In the present invention, a precursor and a lithium source are first subjected to solid-phase sintering to prepare a small-particle single-crystal positive electrode material, and the small-particle single-crystal positive electrode material is then subjected to molten salt sintering for single-crystal growth in the molten salt, so as to obtain a large-particle-size single-crystal positive electrode material, which has a small specific surface area, no sharp corners, a good cycling stability, and good safety.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
16.
METHOD FOR PREPARING SILICON-CARBON COMPOSITE NEGATIVE ELECTRODE MATERIAL AND USE THEREOF
Disclosed herein are a method for preparing a silicon-carbon composite negative electrode material and use thereof. The method comprises: heating a super-crosslinked polymer in an inert atmosphere for carbonizing to give a porous carbide; mixing the porous carbide with a silicon-containing solution to give a silicon-containing porous carbide suspension; adding a complexing agent, a metal salt, and a reducing agent into the silicon-containing porous carbide suspension for reaction, separating solid and liquid phases after the reaction, and heating a resultant solid in an inert atmosphere to give the silicon-carbon composite negative electrode material. By means of processing with silicon-intercalated metal, a metal salt is reduced with a reducing agent under the action of a complexing agent, such that a metal layer is applied to the silicon layer adsorbed on the porous carbide. The metal layer and the silicon are alloyed at a high temperature, such that the expansion, bending, and compression performance of the material is improved. The metal layer can effectively bear the stress of volume change due to the expansion of silicon, and the electric conductivity of the material is also improved.
C23C 18/40 - Revêtement avec du cuivre en utilisant des agents réducteurs
C23C 18/44 - Revêtement avec des métaux nobles en utilisant des agents réducteurs
H01M 4/38 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'éléments simples ou d'alliages
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p.ex. liants, charges
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
17.
TERNARY PRECURSOR WITH HIGH TAP DENSITY AND METHOD FOR PREPARING SAME
Disclosed herein are a ternary precursor with a high tap density and a method for preparing same. The method comprises the following steps: (1) adding a silicon dioxide emulsion into an alkaline substrate solution to give a mixed solution; (2) adding a mixed nickel-cobalt-manganese salt solution, a precipitant, a complexing agent, and a surfactant; (3) conducting solid-liquid separation to give a solid material, and drying and crushing to give a crushed material; (4) mixing the crushed material with the alkaline substrate solution and the surfactant; (5) repeating step (2); and (6) conducting solid-liquid separation to give a solid material, and washing and drying the solid material to give the ternary precursor with a high tap density. The precursor particle prepared according to the method has a higher tap density, and can provide excellent cycle performance for the positive electrode material.
Disclosed are a porous spherical cobalt oxide particle and a preparation method therefor. The preparation method comprises the following steps: (1) mixing a cobalt salt solution, thiourea, and urea to form a mixed solution; (2) heating the mixed solution in step (1) and performing a reaction under an aerobic atmosphere; (3) performing solid-liquid separation, and roasting the obtained solid product under an aerobic atmosphere to obtain a roasted material; and (4) washing and drying the roasted material obtained in step (3) to obtain the porous spherical cobalt oxide particle. The cobalt oxide particle prepared by the preparation method has a relatively large specific surface area, which can significantly increase the specific capacity of a battery.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
Provided are a template growth method for preparing a lithium cobaltate precursor and use. The method comprises: S1: mixing an aqueous ammonium metavanadate solution with a polyvinylpyrrolidone solution for hydrothermal reaction, and calcining the obtained precipitate under an aerobic atmosphere to obtain a vanadium pentoxide structure-directing agent, wherein the polyvinylpyrrolidone solution is prepared by dissolving polyvinylpyrrolidone in an alcohol; S2: adding the vanadium pentoxide structure-directing agent to a cobalt salt solution to obtain a turbid liquid, adding the turbid liquid, a carbonate solution, and a complexing agent in a parallel flow mode for reaction, and performing aging when the reaction material reaches a target particle size; and S3: performing solid-liquid separation on the aged material, and anaerobically calcining the obtained precipitate before aerobic calcination to obtain a lithium cobaltate precursor. Also provided is use of the method in preparing a lithium cobaltate or lithium ion battery. Vanadium pentoxide is used as a seed crystal for coprecipitation to obtain a precursor with good crystallinity, thus improving the cycle performance of the material. Meanwhile, vanadium is doped into a lithium cobaltate material, such that the material has good lattice stability and relatively high specific capacity.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
20.
NCA POSITIVE ELECTRODE MATERIAL PRECURSOR HAVING CORE-SHELL STRUCTURE, METHOD FOR PREPARING SAME, AND USE THEREOF
abc2+cxyz31-z3z3z, wherein x+y+z＝1, 0.85≤x≤0.98, 0＜y≤0.15, and 0＜z≤0.15. The inner core has a porous structure. The inner core in the precursor of the present invention has a high nickel content and a porous structure, which can effectively buffer the volume change caused by subsequent charging and discharging of the NCA positive electrode material. The outer shell is a low-nickel material, which alleviates the volume change caused by the high nickel content.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
21.
METHOD FOR PREPARING TIN-BASED COATED POSITIVE ELECTRODE MATERIAL PRECURSOR, AND POSITIVE ELECTRODE MATERIAL PRECURSOR
Disclosed in the present invention is a method for preparing a tin-based coated positive electrode material precursor. The method comprises the following steps: (1) mixing a nickel-cobalt-manganese hydroxide with a solution containing a carbonate ion and a sulfur ion; (2) adding a stannous source solution to the mixed solution in step (1), reacting same, and performing solid-liquid separation to obtain a solid product; and (3) soaking the solid product obtained in step (2) in a persulfide solution, performing solid-liquid separation, and then carrying out washing and drying to obtain the positive electrode material precursor. A positive electrode material prepared from the tin-based coated positive electrode material precursor prepared by the preparation method has good conductivity and a good lithium ion migration rate, such that that the positive electrode material is ensured to have relatively good electrochemical performance.
222 in the flue gas; according to the plurality of pieces of historical flue gas data, performing calculation to obtain a plurality of historical carbon emission values (S2); and performing prediction by using the plurality of historical carbon emission values, so as to obtain a predicted carbon emission value (S3).
G06Q 10/04 - Prévision ou optimisation spécialement adaptées à des fins administratives ou de gestion, p. ex. programmation linéaire ou "problème d’optimisation des stocks"
23.
PREPARATION METHOD AND USE OF TUNGSTEN-DOPED COBALTOSIC OXIDE
Disclosed in the present invention are a preparation method and use of tungsten-doped cobaltosic oxide. The method comprises the following steps: dissolving a tungsten-containing compound and a molybdenum-containing compound in an alkali liquor to obtain a mixed solution; adding the mixed solution, a cobalt salt solution, and a complexing agent to a base solution in parallel for reaction; calcining a resulting precipitate in an oxygen-containing atmosphere; and soaking the calcined material in a sodium sulfide solution to obtain the tungsten-doped cobaltosic oxide. In the present invention, tungsten is doped, which has a larger atomic radius, stabilizing the internal structure of the material, expanding the ion channel, and thus improving the cycling performance of the material. Meanwhile, the removal of molybdenum in the soaking process provides atomic vacancies, further improving the specific capacity of the material.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
24.
PREPARATION METHOD FOR HARD CARBON NEGATIVE ELECTRODE MATERIAL AND USE THEREOF
Provided are a preparation method for a hard carbon negative electrode material and use thereof. The method comprises the following steps: mixing a substance A, a first alcohol solution, and an oxidant to obtain a substance A peroxide gel, and dissolving a substance B in a second alcohol solution to obtain an amino solution, wherein the substance A is at least one of chloride salts and sulfates of zirconium, germanium and tin, and the substance B is diamine; mixing the substance A peroxide gel with the amino solution for reaction; freeze-drying a resulting reacted slurry; calcining a resulting dry powder in a protective atmosphere; soaking the calcined material in an acid solution for treatment, washing with water, and drying to obtain the hard carbon negative electrode material. The hard carbon negative electrode material is of a relatively thin porous multi-walled structure, which is conducive to shortening the transmission distance of sodium ions and electrons, and can effectively stimulate the high capacity of current active substances, improving the energy density. The porous multi-walled shaped structure as well as a high specific surface area provide structural guarantees for the cycling stability of the material.
Disclosed are a method for coating a lithium cobalt oxide positive electrode material by spraying and an application thereof. The method comprises: preparing an organic silicon-based ethyl ether solution, adding a surfactant and a combustion improver to obtain a mixed solution; adding lithium cobalt oxide into the mixed solution to obtain a mixed material; adding the mixed material into a spraying combustion device, enabling, by means a carrier gas flow, the mixed material to enter a combustion chamber for combustion, and collecting a solid material after a reaction is finished, so as to obtain silicon dioxide-coated lithium cobalt oxide. According to the present invention, flammable organic silicon is used as a coating source, diethyl ether and a lithium cobalt oxide positive electrode material are uniformly mixed and then ignited in a spraying combustion device to generate a silicon dioxide coating layer which coats the surface of the lithium cobalt oxide positive electrode material, and lithium silicate is further generated at high temperature, so that the alkalinity of the surface of the material is reduced.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
26.
PREPARATION METHOD FOR COBALTOSIC OXIDE DOPED AND COATED WITH TIN AND USE THEREOF
Disclosed in the present invention are a preparation method for cobaltosic oxide doped and coated with tin and use thereof. The preparation method comprises: adding a cobalt salt solution, a tin alkali solution, and ammonia water into a base solution in parallel for reaction; when the reaction material reaches a target particle size, aging the reaction material; carrying out solid-liquid separation to obtain a precipitate; calcining the precipitate in the absence of oxygen, and then calcining in the presence of oxygen to obtain the cobaltosic oxide doped and coated with tin. The cobaltosic oxide doped and coated with tin of the present invention improves the stability of the crystal lattice of the main material, and the coating surface of tin dioxide can relieve the dissolution of cobalt by an electrolyte, such that the cycling performance of the material is improved.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/48 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
27.
CARBON EMISSION MONITORING METHOD, APPARATUS, AND DEVICE AND STORAGE MEDIUM
22222 emissions meets a standard-exceeding emission threshold, querying from a preset standard-exceeding alarm database to obtain a first alarm policy corresponding to the comparison value so as to control, according to the first alarm policy, an alarm to give an alarm.
G01N 21/31 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique
G06Q 50/26 - Services gouvernementaux ou services publics
The present invention belongs to the technical field of battery recovery. Disclosed in the present invention are a method for treating a copper-cobalt alloy of a waste lithium battery and the use thereof. The method comprises the following steps: subjecting a waste lithium battery to roasting, acid pickling and solid-liquid separation to obtain copper slag containing nickel and cobalt impurities and a filtrate containing nickel and cobalt; briquetting the copper slag containing nickel and cobalt impurities to prepare an anode in an electrolytic bath, taking a copper sheet as a cathode in the electrolytic bath, and adding an electrolyte for electrolysis; and water washing the electrolyzed cathode to obtain copper, scattering the electrolyzed anode, then adding an oxidant and sulfuric acid, stirring and dissolving same to obtain a copper sulfate mixed solution, and subjecting an electrolyzed electrolyte for evaporative crystallization to obtain an acid solution, nickel sulfate crystals and cobalt sulfate crystals. During the process for treating the copper-cobalt alloy in the present invention, the briquetting is used to replace the previous melting into blocks, and a waste lithium battery module or monomer is used as an electrolysis power supply, such that energy is saved and is better utilized.
Disclosed in the present invention are a system for safely disassembling an accident power battery pack and a method therefor. The system comprises: an explosion-proof disassembling compartment, a disassembling platform being provided in the explosion-proof disassembling compartment, and the disassembling platform comprising an out-of-water demolition area and an underwater disassembling pool; a battery disassembling mechanism, located in the explosion-proof disassembling compartment and capable of working in conjunction with the disassembling platform to disassemble the accident power battery pack; a feeding and discharging mechanism, capable of conveying the accident power battery pack to the explosion-proof disassembling compartment and capable of removing disassembled materials out of the explosion-proof disassembling compartment; a waste gas treatment mechanism, used for treating waste gas generated in the explosion-proof disassembling compartment; and a remote monitoring mechanism, used for remotely monitoring a process of disassembling the battery pack, and capable of remotely controlling the battery disassembling mechanism, the feeding and discharging mechanism, and the waste gas treatment mechanism. Moreover, when disassembling the battery pack, the explosion-proof disassembling compartment is in a sealed state. According to the present invention, efficient disassembly of accident power battery packs of different structures can be implemented, the personal safety of disassembly personnel is ensured, and the environmental protection requirement of disassembly operation is met.
The present invention discloses a method for separating and extracting nickel and iron from a ferro-nickel alloy. The method comprises: leaching a ferro-nickel alloy with a sulfuric acid solution, evaporating and concentrating the leachate to obtain a concentrated solution, cooling and crystallizing the concentrated solution, carrying out solid-liquid separation to obtain a crude ferrous sulfate crystal and a first solution, adding an oxidizing agent and a phosphorus source into the first solution, adding an alkali to adjust the pH, carrying out a heating reaction, continuously adjusting the pH of the slurry after the reaction is finished, and then carrying out solid-liquid separation to obtain a nickel sulfate solution and iron phosphate. After the leachate of the present invention is evaporated and concentrated, and then cooled and crystallized, most of the iron can be separated, the ferrous sulfate crystal and a solution with a high Ni/Fe ratio are obtained, and the phosphorus source is added for the heating reaction to obtain iron phosphate. During the process, high-efficiency separation of ferronickel is achieved, and meanwhile, the nickel sulfate solution and the ferrous sulfate crystal which are high in purity and can be applied to a downstream process are obtained, the recovery rates of nickel and iron being both 99.0% or above.
A preparation method for a porous microsphere carbon negative electrode material, which method comprises: mixing plant fibers with a halogenated lithium salt to obtain a mixed solid; heating the mixed solid, and introducing an oxidizing gas to obtain a pre-dissociated substance; mixing the pre-dissociated substance with a dissociation solution, and heating same for a reaction to obtain a cellulose dissociation solution; adding a hybrid to the cellulose dissociation solution, and subjecting the hybrid solution to spray drying to obtain a microsphere precursor; and heating the microsphere precursor in an inert atmosphere to obtain the porous microsphere carbon negative electrode material. In the prepared porous microsphere hard carbon negative electrode material, porous microspheres have rich defect pores, such that the specific surface area can be increased, active sites can be increased, and contact between an electrode and an electrolyte can be promoted; therefore, the reversible lithium storage capacity of the hard carbon is improved.
H01M 4/133 - PROCÉDÉS OU MOYENS POUR LA CONVERSION DIRECTE DE L'ÉNERGIE CHIMIQUE EN ÉNERGIE ÉLECTRIQUE, p.ex. BATTERIES Électrodes Électrodes composées d'un ou comprenant un matériau actif Électrodes pour accumulateurs à électrolyte non aqueux, p.ex. pour accumulateurs au lithium; Leurs procédés de fabrication Électrodes à base de matériau carboné, p.ex. composés d'intercalation du graphite ou CFx
H01M 4/583 - Matériau carboné, p.ex. composés au graphite d'intercalation ou CFx
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
32.
TERNARY POSITIVE ELECTRODE MATERIAL HAVING CORE-SHELL STRUCTURE AND PREPARATION METHOD THEREFOR AND USE THEREOF
xyz2dabck1-k1-k, A comprising at least one of cobalt, cerium, nickel, manganese, aluminum, zirconium, strontium and yttrium, 0.3≤x≤1, y>0, z>0, x+y+z=1, 0.3≤a≤1, b≥0, c≥0, a+b+c=1, 1≤d≤3, 0
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/1391 - Procédés de fabrication d'électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p.ex. LiCoOx
33.
MODIFIED HIGH-NICKEL TERNARY POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR
Disclosed in the present invention are a modified high-nickel ternary positive electrode material and a preparation method therefor. The modified high-nickel ternary positive electrode material is a cobalt element doped and cobalt element coated high-nickel ternary positive electrode material. The mass fraction of a doped cobalt element is 0.2-2%, and the thickness of a cobalt element coating layer is 20-200 nm. The cobalt element doped on the surface of the high-nickel ternary positive electrode material can improve the cycle performance of the high-nickel ternary positive electrode material, and cobalt hydroxide reacts with residual lithium on the surface of the material during microwave treatment of the coated cobalt element, such that the content of the residual lithium on the surface of the material can be reduced. Under the combined action of doping and coating, the performance of the high-nickel ternary positive electrode material is obviously improved. Moreover, the preparation method in the present invention is simple, low in cost, environment-friendly, and suitable for large-scale industrial production.
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/1391 - Procédés de fabrication d'électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p.ex. LiCoOx
34.
PREPARATION METHOD FOR AND APPLICATION OF TELLURIUM-DOPED LITHIUM COBALT OXIDE PRECURSOR
Disclosed in the present invention are a preparation method for and an application of a tellurium-doped lithium cobalt oxide precursor. A cobalt salt solution, a precipitant, and a complexing agent are added into a base solution for reaction, the precipitant being a mixed solution of tellurium dioxide dissolved in sodium hydroxide, and the base solution being a mixed solution of ammonia water and thiosulfate; and when the reaction material reaches a target particle size, the reaction material is aged, and solid-liquid separation is performed to obtain a lithium cobalt oxide precursor. According to the present invention, tellurium is reduced into tellurium anions by means of thiosulfate, cobalt telluride is generated, and a coprecipitate is formed with cobalt hydroxide, such that doping of tellurium in a precursor is achieved.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
Disclosed are a pre-lithiated coated lithium cobalt oxide positive electrode material and a preparation method therefor. The preparation method comprises the following steps: (1) adding lithium cobalt oxide into absolute ethyl alcohol, and mixing; (2) adding tin tetrachloride and lithium hydroxide into the mixed solution of step (1), and adding a carbon source for mixing; (3) evaporating the mixed solution obtained in step (2) to dryness; and (4) calcining the dried material in step (3) in an oxygen-containing atmosphere, cooling, washing, and drying to obtain the product. The positive electrode material prepared by the method has excellent conductive performance and cycle performance.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
36.
FLUORINE-ALUMINUM CO-DOPED LITHIUM COBALT OXIDE POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR
Disclosed in the present invention is a preparation method for a fluorine-aluminum co-doped lithium cobalt oxide positive electrode material. The preparation method comprises the following steps: (1) mixing a cobalt salt solution, an aluminum-alkali mixed solution, and a complexing agent to generate a precipitate; (2) performing solid-liquid separation on the material in step (1), washing the precipitate, and drying at a specific drying temperature to obtain a dried material, so that cobalt hydroxide in the dried material is decomposed into cobalt oxide, while the aluminum hydroxide in the dried material still stably exists; (3) mixing the dried material obtained in step (2) with ammonium fluoroaluminate, calcining the mixture in a protective atmosphere, and then carrying out heat preservation in an oxidizing gas to obtain a calcined material; and (4) mixing the calcined material obtained in step (3) with a lithium-containing compound, and then roasting the mixture in an aerobic atmosphere to obtain the fluorine-aluminum co-doped lithium cobalt oxide positive electrode material. The positive electrode material prepared by the preparation method is good in cycling stability.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/131 - PROCÉDÉS OU MOYENS POUR LA CONVERSION DIRECTE DE L'ÉNERGIE CHIMIQUE EN ÉNERGIE ÉLECTRIQUE, p.ex. BATTERIES Électrodes Électrodes composées d'un ou comprenant un matériau actif Électrodes pour accumulateurs à électrolyte non aqueux, p.ex. pour accumulateurs au lithium; Leurs procédés de fabrication Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p.ex. LiCoOx
H01M 4/1391 - Procédés de fabrication d'électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p.ex. LiCoOx
37.
GRAPHENE-BASED NITRIDE NEGATIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR
9122222, wherein M is at least one of Ni and Co. The graphene-based nitride negative electrode material has good cycle stability and relatively high capacitance.
A preparation method for and the use of a hard carbon negative electrode material. The preparation method comprises the following steps: subjecting starch to first sintering, then crushing same, introducing air and nitrogen, and performing second sintering to obtain porous hard-block particles; and subjecting the porous hard-block particles to third sintering, continuously heating same, and performing fourth sintering to obtain the hard carbon negative electrode material. The prepared hard carbon negative electrode material has a reversible capacity of no less than 330 mAh/g, and an excellent cycling stability and excellent initial coulombic efficiency.
Disclosed are a recovery method and recovery system for a ternary precursor mother liquor. The recovery method for a ternary precursor mother liquor provided in the present invention comprises the following steps: S1, reacting sulfide ions with a ternary precursor mother liquor, and then performing solid-liquid separation; S2, reacting an oxidant with liquid phase components obtained in step S1, and then performing solid-liquid separation; S3, treating, with quicklime, liquid phase components obtained in step S2, and collecting obtained gas; S4, performing, with sulfur dioxide, aeration treatment on a residual mixture in step S3, and then performing solid liquid separation; and S5, performing crystallization treatment on liquid phase components obtained in step S4. According to the recovery method for a ternary precursor mother liquor of the present invention, solutes in the ternary precursor mother liquor can be converted into products having high economic benefits; meanwhile, the treated ternary precursor mother liquor has few impurities, and high environmental protection benefits are achieved. The present invention further provides a recovery system for implementing the recovery method.
The present invention belongs to the technical field of battery recovery. Disclosed are a lithium ion battery recycling method and an application. The method comprises the following steps: mixing a waste lithium ion battery with waste NMP, and carrying out ultrasonic stirring and solid-liquid separation to obtain filter residues and a first filtrate; carrying out deorganization, salt washing and sorting on the filter residues to obtain battery powder; carrying out acid leaching on the battery powder to obtain a leaching solution and graphite slag, taking the leaching solution, adding an oxidizing agent to undergo a reaction, then adding a phosphate radical-containing iron removal agent to undergo a mixing reaction, adjusting the pH value, and carrying out solid-liquid separation to obtain iron phosphate and a second filtrate; and adding a phosphorus removal agent into the second filtrate to undergo a reaction, performing extraction and impurity removal, and carrying out a precipitation reaction to obtain a precursor. According to the method of the present invention, hydrogen is not generated in a recovery process, separation between a positive electrode material/negative electrode material and black powder can be achieved, iron is removed by using a phosphate radical, valuable metal is prevented from being carried by an iron colloid, and a metal recovery rate is improved.
54544 can be prevented from being in direct contact with water and carbon dioxide in the air, the "air sensitive effect" on the surface of the modified lithium ion positive electrode material is eliminated or mitigated, and the stability of the material in the air is improved.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p.ex. LiTi2O4 ou LiTi2OxFy
42.
LITHIUM-BATTERY POSITIVE-ELECTRODE MATERIAL, AND METHOD FOR PREPARING SAME
xyz22322, where x + y + z = 1, 0.80 ≤ x ≤ 0.95, 0 ≤ y ≤ 0.2, 0 ≤ z ≤ 0.2, 0 ≤ a ≤ 0.1, and 0 ＜ b ≤ 0.1. The initial coulombic efficiency of a battery made of the lithium-battery positive-electrode material can reach 93.3% or above, and the battery has a relatively high initial coulombic efficiency and good electrical properties.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
43.
NITROGEN-DOPED HOLLOW COBALTOSIC OXIDE, AND PREPARATION METHOD THEREFOR AND USE THEREOF
34344-COF-T-D@C-N. Further included is the use of the nitrogen-doped hollow cobaltosic oxide in the preparation of a lithium-ion battery, a capacitor, a magnetic material, a catalyst, a gas sensor, a colorant, or a pressure-sensitive ceramic material. The nitrogen-doped hollow cobaltosic oxide has a large specific surface area due to the presence of an open hollow structure, such that the contact area with an electrolyte is large, the transportation process of lithium ions therein is easier, and a volume effect is avoided during the charging and discharging process by means of the open hollow structure; and nitrogen is introduced for doping, such that particles can be gradually activated to increase the specific surface area and active sites, and the discharging (cycling) stability and rate performance of the material are improved.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
45.
ALUMINUM-DOPED NEEDLE-LIKE COBALTOSIC OXIDE AND PREPARATION METHOD THEREFOR
The present application belongs to the technical field of battery materials, and discloses an aluminum-doped needle-like cobaltosic oxide and a preparation method therefor. The preparation method comprises the following steps: mixing a waste battery powder and an amino acid, adjusting the pH until an alkaline state is reached, and subjecting same to solid-liquid separation to obtain an aluminum-removed battery powder and a first filtrate; adding an acid to the aluminum-removed battery powder, mixing same, and subjecting same to solid-liquid separation to obtain a cobalt-containing acid solution and a copper-containing slag; adding, in a dropwise manner, a templating agent to the cobalt-containing acid solution, then adding an alkali to adjust the pH, centrifuging same, and subjecting same to a heat treatment to obtain an aluminum-doped needle-like cobaltosic oxide. In the present application, aluminum in waste batteries is effectively recovered by using an amino acid; when the templating agent is added and the pH is adjusted, a heat treatment is performed; and cobalt is wrapped by carbon, aluminum, etc. that are generated by the heat treatment, such that further agglomeration and the coupling of the templating agent and cobalt ions during an encapsulation process are mitigated, and a needle-like cobaltosic oxide with a good morphology is obtained.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
C01B 32/05 - Préparation ou purification du carbone non couvertes par les groupes , , ,
95959595955@NC prepared by the present application has a high surface area and a unique bullet-like hollow nanostructure, and shows good performance in a high-performance sodium ion battery. The hollow nanostructure can effectively adapt to the volume expansion change in processes of sodium intercalation and sodium deintercalation; and the construction of the bullet-like nanostructure can expand the contact area between an electrode and an electrolyte, so as to improve the electrochemical kinetic performance.
Provided is a process for mineralization from evaporation and brine mixing of a calcium chloride-type lithium-containing salt lake brine, comprising the following steps: (1) carrying out natural evaporation on a calcium chloride-type lithium-containing salt lake brine to precipitate a sodium salt and a potassium-containing mixed salt; and (2) when calcium in the brine is saturated, adding a magnesium chloride saturated solution a certain proportion to perform a brine mixing operation, then carrying out natural evaporation to precipitate carnallite, and obtaining a lithium-containing tailing brine with low potassium and sodium content when magnesium in the brine is saturated. The process has the characteristics of being simple in process, easy in operation, high in potassium yield and easy in extraction of lithium from a lithium-containing brine, and has practical significance for the development and utilization of potassium and lithium resources in calcium chloride-type salt lakes.
Disclosed in the present invention are a method for preparing a ternary precursor from microbubbles by pre-oxidation and an application of the ternary precursor. The method comprises: adding a nickel-cobalt-manganese mixed salt solution, a precipitant, and a complexing agent to a base solution for reaction, the nickel-cobalt-manganese mixed salt solution and the precipitant being respectively added after reacting with oxygen by means of a microbubble generator; obtaining a solid material; and preparing the solid material into slurry, treating ozone and water by means of the microbubble generator, and then introducing into the slurry for reaction to obtain the ternary precursor. Compared with a strong oxidant, the prepared product of the present invention has few impurities and higher product purity, and the sintered positive electrode material has higher rate capability and cycling performance.
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
49.
PLANT POMPON HARD CARBON COMPOSITE NEGATIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
22322. The three-dimensional micron structure of the hard carbon composite negative electrode material has abundant pores, such that the specific surface area and conductivity of the hard carbon composite negative electrode material are improved; by introducing heteroatom materials such as N and O into the carbon of the hard carbon composite negative electrode material, the electrochemical performance thereof can also be improved; and since the electronic arrangement modes of N and C atoms are similar, C in a carbon framework is more easily substituted by the N atoms, such that the surface functional groups of the carbon material are changed so as to improve the electrochemical performance thereof, that is, the specific capacity and initial efficiency of the hard carbon composite negative electrode material are improved.
Disclosed in the present application is a sintering system capable of improving temperature uniformity. The sintering system comprises: a multi-layer and multi-column atmosphere furnace, a preheating unit with a two-stage structure, and lateral heating devices. In the sintering system, a two-stage preheating mode is used to heat a gas inputted into the atmosphere furnace, wherein the first-stage preheating not only plays a role in preheating, but can also cool materials to be discharged from the furnace, such that the gas consumption of the cooling section is saved on; and the second-stage preheating not only saves energy, but also improves the utilization rate of heat. The lateral heating devices can compensate for heat loss caused by heat transfer between the side and the outside, and solves the problem of insufficient heat at the side due to a high hearth, such that the uniformity and stability of the temperature in the hearth is improved. A ventilation mechanism can disperse intake air flow, such that the stability of the atmosphere is guaranteed, the uniformity of a temperature field can be greatly improved, and flying dust can also be avoided. By means of the two-stage preheating, the lateral heating devices and the ventilation mechanism on lateral air inlets, the uniformity of the internal temperature of the multi-layer and multi-column atmosphere furnace can be maintained, such that the product quality is improved.
F27B 9/12 - Fours dans lesquels la charge est déplacée mécaniquement, p.ex. du type tunnel; Fours similaires dans lesquels la charge se déplace par gravité avec dispositions particulières pour le préchauffage ou le refroidissement de la charge
51.
SILICON-ALUMINUM-IRON COMPOSITE MATERIAL, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
The present application relates to the technical field of wastewater treatment, and discloses a silicon-aluminum-iron composite material, and a preparation method therefor and an application thereof. The silicon-aluminum-iron composite material comprises a core and a shell surrounding the core; the core is a silicon-aluminum-based hollow sphere; the shell comprises an iron element; holes are formed on the silicon-aluminum-iron composite material. According to the silicon-aluminum-iron composite material in the present application, the specific surface area of the silicon-aluminum-iron composite material is increased by means of structural adjustment; when the silicon-aluminum-iron composite material is used for adsorbing heavy metal ions, the adsorption sites are also correspondingly increased, and finally the adsorption capacity of the silicon-aluminum-iron composite material for heavy metal ions is improved.
B01J 20/10 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtration; Absorbants ou adsorbants pour la chromatographie; Procédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant de la silice ou un silicate
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtration; Absorbants ou adsorbants pour la chromatographie; Procédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
B01J 20/30 - Procédés de préparation, de régénération ou de réactivation
C02F 1/28 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par absorption ou adsorption
52.
PREPARATION METHOD FOR SODIUM FERROVANADIUM PHOSPHATE MATERIAL AND APPLICATION THEREOF
The present application relates to the technical field of battery material recovery, and discloses a preparation method for a sodium ferrovanadium phosphate material and an application thereof. The preparation method comprises the following steps: crushing a lithium iron phosphate battery, adding an acid solution, reacting same, and carrying out solid-liquid separation to obtain a leaching solution and leaching residue; removing impurities from the leaching solution, adding an oxidizing agent, adjusting the concentrations of iron and phosphorus elements, and adjusting the pH value to be less than 1.5 to obtain a solution A; adding the solution A and a vanadium-containing solution to the acid solution, controlling the pH value to be 1.8-2.0, then adding an alkaline solution, adjusting the pH value to be 2.0-2.5, aging, and carrying out solid-liquid separation to obtain a precipitate and a filtrate; calcining the precipitate, then adding a sodium source, a phosphorus source and a carbon source, mixing, and sintering to obtain a product. According to the present application, a waste lithium iron phosphate battery is recycled, and a sodium ion battery positive electrode material is prepared, thus recycling resources in a battery, which is beneficial to environmental conservation.
The present application discloses a dealloyed sodium ion battery negative electrode material and a preparation method therefor. The sodium ion battery negative electrode material is composed of solid carbon particles and a nanoscale metal mesh coated on the surface of the solid carbon particles, or is composed of a nanoscale metal mesh and a carbon skeleton supporting at the interior of said mesh, the carbon skeleton being hollow or three-dimensional porous, and the composition of the nanoscale metal mesh being at least one of Sn, Pb, Bi, Ge, or Sb. The combination of the metal mesh and the carbon material can improve the strength and conductivity of the particles; in addition, the three-dimensional porous or hollow carbon skeleton structure can further increase the specific surface area of the material, which is more conducive to the deintercalation of sodium ions and can improve cyclic performance and specific capacity.
1-a-bab21-x-yxyyO and a porous structure. After silicon removal, lattice vacancies will occur in the inner core. When the precursor is sintered to prepare a positive electrode material, the stress change caused by charging and discharging can be effectively relieved, thus achieving the effect of suppressing micro-cracks and improving the cycling performance of the material.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
55.
METHOD FOR RECYCLING ELECTROLYTE OF LITHIUM-ION BATTERY
55 gas for reaction, and filtering to give an organic solution; and freezing the organic solution and filtering to give lithium hexafluorophosphate. By means of freezing the waste lithium-ion battery before disassembly, the present invention avoids contamination due to the volatilization and decomposition of the electrolyte. Lithium hexafluorophosphate prepared by the method disclosed herein features a high purity, thus meeting the requirement of Chinese regulation HG/T4066-2015 LITHIUM HEXAFLUOROPHOSPHATE.
The present application belongs to the technical field of energy storage materials, and discloses a preparation method for a polyanionic positive electrode material. The preparation method comprises: crushing a lithium iron phosphate battery, soaking in an acid solution, separating to obtain a leachate; then removing copper from the leachate, adjusting the contents of phosphorus, iron and aluminum; oxidizing, then adjusting the pH value to 1.8-2.8 for co-precipitation; and finally calcining the precipitate, soaking same in an alkaline solution to remove aluminum, then mixing and sintering with a sodium source and a carbon source, and preparing a polyanionic positive electrode material. In the described preparation method, by means of recycling waste lithium iron phosphate batteries, a polyanion positive electrode material is prepared. Said material can be applied to secondary sodium ion batteries, so that resources in waste batteries can be reused, which is beneficial to resource saving and environmental protection. The described method is beneficial to the intercalation of sodium ion and carbon, thereby improving the specific capacity and conductivity of the material.
Disclosed herein is a method for desorption of recycled active materials from a waste battery, comprising the following steps: reacting a positive and negative electrode current collector core of a waste battery with carbon tetrachloride and chlorine, and obtaining a remaining core, a carbon tetrachloride solution of aluminum chloride and a first positive electrode desorption powder; soaking the remaining core and the first positive electrode desorption powder in water, and obtaining a soaked core, a lithium salt solution and a second positive electrode desorption powder; and reacting the soaked core with nitric acid, and obtaining a copper nitrate solution and a negative electrode desorption powder. A waste lithium-ion battery only needs to be discharged and dismantled, and no crushing process is required, which helps to avoid the steps of crushing and sorting and reduces equipment investment. Moreover, positive and negative electrode materials can be effectively recycled, and the economic value of products is high.
The present invention discloses a preparation method for a nickel phosphide@carbon negative electrode material having a porous structure, and the use thereof. The preparation method comprises: mixing a nickel salt solution with a precipitant for a reaction, and introducing carbon dioxide for a reaction to obtain a precipitate; placing the precipitate at a lower tuyere of a tubular furnace, taking anhydrous sodium hypophosphite and placing same at an upper tuyere of the tubular furnace, heating the tubular furnace, and taking out the precipitate and soaking same in a sodium hydroxide solution to obtain porous nickel phosphide; and mixing the porous nickel phosphide with organic matter for a carbonization reaction to obtain a nickel phosphide@carbon negative electrode material having a porous structure. The negative electrode material prepared in the present application has a porous structure; during charging and discharging, the porous structure therein can both buffer the volume change during the charging and discharging process and increase the contact area between an electrode and an electrolyte; and the negative electrode material has a high capacity, and good cycling performance and rate performance.
A magnetic separation device used for crushed battery powder, comprising a first conveyor belt assembly (1), a second conveyor belt assembly (2), and a third conveyor belt assembly (3). The first conveyor belt assembly (1) comprises a screen conveyor belt (11) and a plurality of electromagnets (12) arranged on the screen conveyor belt (11), the plurality of electromagnets (12) being arranged at intervals in the conveying direction of the screen conveyor belt (11), and screen holes (13) are formed in the screen conveyor belt (11). The second conveyor belt assembly (2) comprises a non-magnetic material conveyor belt (21), and the non-magnetic material conveyor belt (21) passes through the middle portion of the screen conveyor belt (11). The third conveyor belt assembly (3) comprises a magnetic material conveyor belt (31) arranged below the screen conveyor belt (11). Non-magnetic materials in the crushed battery powder fall onto the non-magnetic material conveyor belt (21) from the screen holes (13) in the screen conveyor belt (11), and the electromagnets (12) lose magnetization after magnetic materials are attracted and transmitted by the electromagnets (12) to the lower portion of the screen conveyor belt (11), so as to enable the magnetic materials to fall onto the magnetic material conveyor belt (31).
B03C 1/20 - Séparation magnétique agissant directement sur la substance à séparer ayant des supports pour le matériau traité en forme de bandes avec des aimants se déplaçant pendant l'opération en forme de bandes, p.ex. du type à bande transversale
60.
LITHIUM ION BATTERY PRE-LITHIATION AGENT, PREPARATION METHOD THEREFOR, AND APPLICATION
5454544 primary particles. In the present application, a carbon source is mixed with a soluble salt of Fe, causing Fe ions to attach to the carbon source; after ammonia water is added, hydroxide having small particles and good dispersion can be formed, and then a nanoscale oxide is obtained by means of a solvothermal reaction, and the carbon source further achieves an obstruction effect between particles in a subsequent sintering process, primary particle growth is slowed, and large single crystal particles are prevented from growing. The pre-lithiation agent prepared using the present method has smaller primary particles, a shorter Li+deintercalation path during charging, and good rate capability. The pre-lithiation agent can provide enough Li+when charging a battery for the first time to cause an SEI film to be generated on a surface of a negative electrode, Li+ loss in a positive electrode material is reduced, and the Coulombic efficiency and capacity of a lithium ion battery are improved.
Disclosed are an aluminum-doped positive electrode material precursor, a method for preparing the same, and use thereof. The method comprises: adding a mixed solution of nickel, cobalt and calcium salts, a first aluminum-based alkali solution, ammonia water, and a sodium hydroxide solution to a base solution for reaction; performing solid-liquid separation to obtain a filter cake; soaking the filter cake in a second aluminum-based alkali solution; performing solid-liquid separation to obtain a solid material; calcining the solid material; and soaking the calcined material in water to obtain the aluminum-doped positive electrode material precursor. According to the present application, the precursor achieves the co-precipitation of nickel, cobalt, and aluminum. Under the action of subsequent dechlorination, calcium removal, and dehydration, a porous material having a low tap density is gradually formed, which facilitates the diffusion of a lithium source during the subsequent sintering process with the lithium source to prepare a positive electrode material.
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
62.
METHOD FOR PREPARING NITROGEN-DOPED CARBON DOT-REDUCED GRAPHENE OXIDE COMPOSITE MATERIAL AND USE THEREOF
Disclosed are a method for preparing a nitrogen-doped carbon dot-graphene oxide composite material and use thereof. The method comprises the following steps: mixing a carbon source and a nitrogen source, performing a hydrothermal reaction, and performing solid-liquid separation to give a nitrogen-doped carbon dot solution; mixing graphene oxide and a reducing agent, stirring, performing solid-liquid separation, and dissolving the solid phase to give a pre-reduced graphene oxide solution; and mixing the nitrogen-doped carbon dot solution and the pre-reduced graphene oxide solution by sonication, dropwise adding the mixture on an electrode, and performing cyclic voltammetry for reduction to give the nitrogen-doped carbon dot-graphene oxide composite material.
G01N 27/26 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en utilisant l'électrolyse ou l'électrophorèse
63.
PREPARATION METHOD FOR SILICON-CARBON NEGATIVE ELECTRODE MATERIAL AND USE THEREOF
Disclosed in the present application are a preparation method for a silicon-carbon negative electrode material and the use thereof. The preparation method comprises: adding a metal salt solution into a sodium silicate solution for a reaction to obtain a silicate precipitate; calcining the silicate precipitate; placing the calcined material in a concentrated acid for heat soaking; and adding the resulting wet material into a graphene dispersion liquid, drying same by means of distillation, and heating the resulting dry material to obtain the silicon-carbon negative electrode material. In the present application, after metal ions are removed from the silicate, the resulting silicon dioxide has more atomic vacancies, such that the problem of the degradation of the cycling performance caused by volume expansion can be effectively relieved; and when the silicon dioxide is sintered with graphene, the silicon dioxide is deprived of oxygen atoms, and monatomic silicon having a higher specific capacity is formed, such that the specific capacity and cycling performance of the material are improved.
23344 and NiO. The preparation method for the catalyst comprises the following steps: dissolving copper and aluminum slag, which is generated during a lithium ion battery recovery process, in an acid, then adding an alkali for a co-precipitation reaction, separating out obtained precipitates, and then roasting same to obtain a Cu-Al-Ni-Co-based catalyst. The catalyst has abundant alkaline sites and active sites, has a simple and environmentally friendly preparation, has good catalytic activity and stability, can further realize resource cyclic regeneration, value addition and comprehensive utilization of waste battery materials and carbon dioxide, and is suitable for practical popularization and use.
C07C 29/156 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par réduction exclusivement des oxydes de carbone avec de l'hydrogène ou des gaz contenant de l'hydrogène caractérisée par le catalyseur utilisé contenant des métaux du groupe du fer, des métaux du groupe du platine, ou leurs composés
65.
METHOD FOR REMOVING ALUMINUM FROM STRONG ALKALI SOLUTION AND APPLICATION THEREOF
A method for removing aluminum from a strong alkali solution. The method comprises: concentrating and filtering a strong alkali solution, taking a first concentrated solution, and adding an aluminum removing agent thereto to obtain a silicon slag and a filtrate; and concentrating and filtering the filtrate to obtain a metal hydroxide crystal and a second concentrated solution, wherein the aluminum removing agent comprises the following components: a silicate and silicon dioxide; and the strong alkali solution comprises aluminate ions. By using a silicate and silicon dioxide as the aluminum removing agent in the strong alkali solution, a water-insoluble aluminosilicate is generated from aluminum in the case that the original pH of the solution is not changed, and aluminum in the strong alkali solution is eliminated to a level of 30-100 ppm; moreover, corresponding sodium hydroxide, potassium hydroxide or lithium hydroxide crystals can be recovered, and mother liquor can be recycled.
The present application provides a preparation method for a positive electrode material precursor having a large channel, and an application thereof. The method comprises: mixing a sodium hexanitrocobaltate aqueous solution, a nickel-manganese mixed salt solution, an oxalic acid solution, and aqueous ammonia for reaction; calcining a solid material; and soaking the calcined material in water to obtain a positive electrode material precursor having a large channel. According to the present application, nickel-cobalt-manganese and sodium-ammonium are co-precipitated and sintered, and then sodium-ammonium is removed; and since the radius of sodium ions is greater than the radius of lithium ions, a large ion channel is left in a nickel-cobalt-manganese precursor framework, thereby facilitating the deintercalation of the lithium ions of a chemically sintered positive electrode material, widening a lithium ion diffusion channel, and remarkably improving the rate capability and the cycle performance of the material.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
67.
NICKEL-COBALT-MANGANESE TERNARY POSITIVE ELECTRODE MATERIAL NANOROD AND USE THEREOF
1-x-y-zxyz22, where 0 < x < 1, 0 < y < 1, and 0 ≤ z ≤ 0.05; and the nickel-cobalt-manganese ternary positive electrode material nanorod has a section diameter of 50-200 nm and a length of 0.1-5 μm. In the present application, a mixed metal salt solution of nickel, cobalt, manganese, aluminum and lithium and 8-hydroxyquinoline are subjected to complex-precipitation to generate a precipitate containing nickel, cobalt, manganese, aluminum and lithium, and then the precipitate is calcined to prepare a ternary positive electrode material nanorod. Unlike traditional processes, no ammonia-nitrogen wastewater is generated in the whole process, and an alcohol used in the process can be directly recovered by means of evaporation and condensation, such that the process is very environment-friendly.
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
68.
LITHIUM SALT METERING AND BATCHING SYSTEM, AND BATCHING METHOD
A lithium salt metering and batching system, and a batching method using the lithium salt metering and batching system. The lithium salt metering and batching system comprises: a material storage bin (100); a metering bin (200) connected below the material storage bin (100) by means of a feeding pipe (110), an excitation block (310) and at least two feeding valves (320) being provided on the feeding pipe (110); a coulter mixer (500), the coulter mixer (500) being connected below a discharge end of a metering helical device (400) by means of a discharge pipe (600), at least two discharge valves (610) and a lower flexible connector (620) being provided on the discharge pipe (600), and the lower flexible connector (620) being located between the two discharge valves (610); and a control module (700).
B01F 27/72 - Mélangeurs à agitateurs tournant dans des récipients fixes; Pétrins avec des agitateurs tournant autour d'un axe horizontal ou incliné avec des hélices ou des sections d'hélices
B01F 27/90 - Mélangeurs à agitateurs tournant dans des récipients fixes; Pétrins avec des agitateurs tournant autour d'un axe sensiblement vertical avec des palettes ou des bras
B01F 33/82 - Combinaisons de mélangeurs dissemblables
B01F 35/221 - Commande ou régulation des paramètres de fonctionnement, p.ex. du niveau de matière dans le mélangeur, de la température ou de la pression
ff -stabb; R is at least one of zirconium, copper, nickel, cobalt, manganese, chromium, titanium, molybdenum, silver, magnesium, calcium, germanium, tin, and antimony; Z is at least one of aluminum, magnesium, and zinc; s and t each are independently 1, 2, 3, 4 or 5; a is equal to 1 or 2, and b is equal to 1 or 3. According to the silicon-carbon negative electrode material of the present application, because a boric acid polymer (BAP) is contained, the specific surface area and D50 of the silicon-carbon negative electrode material are better, and then the electrochemical properties are improved.
The present invention discloses a preparation method for and the use of a lithium silicate-based adsorbent. The method comprises: mixing and stirring butyl methacrylate, an acid and an organic solvent to obtain a first solution; adding lithium silicate, an initiator and N,N'-methylenebisacrylamide into the first solution, and heating and stirring same for a reaction to obtain a second solution; subjecting the second solution to low-temperature dehydration, cooling and drying to obtain a lithium silicate-based polymer; mixing the lithium silicate-based polymer with a third solution; and subjecting same to low-temperature carbonization under anoxic conditions, so as to obtain the lithium silicate-based adsorbent, wherein the third solution is obtained by mixing cotton fibers, tartaric acid, carboxymethylcellulose and water. The lithium silicate-based adsorbent material prepared in the present invention has the function of selectively adsorbing COD in wastewater, and the lithium silicate-based adsorbent material has a relatively large number of lithium sites, a weak adsorption response to lithium and a poor lithium adsorption capacity, such that the lithium silicate-based adsorbent material can selectively adsorb COD in wastewater and has a small interference with lithium in wastewater.
An electric conducting material and a preparation method therefor. The electric conducting material comprises: porous carbon particles, holes of which are filled with zirconium nanoparticles; and graphene, loaded with the porous carbon particles. According to the electric conducting material, by means of design of the material and structure, the conductivity of the electric conducting material can be remarkably improved.
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p.ex. liants, charges
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
H01B 1/04 - Conducteurs ou corps conducteurs caractérisés par les matériaux conducteurs utilisés; Emploi de matériaux spécifiés comme conducteurs composés principalement soit de compositions à base de carbone-silicium, soit de carbone soit de silicium
72.
HIGH-TEMPERATURE STABLE POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
The present invention relates to the technical field of batteries, and disclosed are a high-temperature stable positive electrode material, and a preparation method therefor and an application thereof. The positive electrode material comprises a lithium nickel cobalt manganese-based oxide, a composite oxide, and difluorophosphate; the composite oxide is coated on the surface of the lithium nickel cobalt manganese-based oxide; the difluorophosphate is coated on the surface of the composite oxide; the composite oxide comprises an oxygen element, and at least two metal elements of aluminum, titanium, zirconium, yttrium, tungsten, silicon, boron, magnesium, niobium, lanthanum, zinc, tin, calcium or bismuth. A battery prepared by using the positive electrode material has, under a high voltage, the advantages of being high in capacity, high in rate, good in high temperature cycle performance and stable in high temperature. The preparation method for the positive electrode material is simple and easy to achieve industrialization.
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p.ex. phosphates, silicates ou borates
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
73.
LITHIUM-ION BATTERY POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, AND LITHIUM-ION BATTERY
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
74.
FUNCTIONALIZED MODIFIED COATING AGENT, PREPARATION METHOD THEREFOR, AND USE THEREOF
xy(1-x-y)2abcabcc is a coating layer, and the coating layer is accompanied by an oxide; 0.3≤x≤1, y≥0, and 1-x-y≥0; M is selected from at least one of cobalt, cerium, nickel, manganese, aluminum, zirconium, strontium and yttrium; 00, b>0, and c>0; and the oxide comprises oxides of cobalt, cerium, nickel, manganese, aluminum, zirconium, strontium and yttrium. The functionalized modified coating agent is narrow in particle size distribution, small in particle and fluffy and light, and facilitates the formation of uniform coating on a ternary positive electrode base material.
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p.ex. liants, charges
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
75.
DOPED LITHIUM IRON PHOSPHATE ENCAPSULATED IN LIGAND, AND PREPARATION METHOD THEREFOR AND USE THEREOF
44@Mn-T-C/N; and T is at least one of zinc, nickel, copper, iron, cobalt, zirconium, aluminum, gallium, and chromium. The doped lithium iron phosphate encapsulated in ligand is in a doping type by doping with a composite-supported micro-carbon sphere conductor. The composite-supported micro-carbon sphere conductor has a particle size of 80-150 nm, and thus can withstand greater stress and reduce the probability of cracking. The structural integrity of the spherical lithium iron phosphate doped with the composite-supported micro-carbon sphere conductor is easier to control.
Disclosed in the present invention are a recovery method for a retired lithium ion battery electrode material and the use thereof. The method comprises disassembling a retired lithium ion battery, separating out a negative electrode plate, washing or soaking the negative electrode plate with water or an acid to obtain a lithium-containing solution and a lithium-removed negative electrode plate, and subjecting the lithium-containing solution to a precipitation treatment to obtain lithium carbonate; subjecting the lithium-removed negative electrode plate firstly to low-temperature calcination in a vacuum or an inert atmosphere to melt a binder, and then to high-temperature calcination to carbonize the binder to obtain a carbon-coated graphite material. In the present invention, a lithium resource in an SEI film of a graphite negative electrode is recycled, the SEI film in the negative electrode plate is washed or soaked, such that lithium ions enter a solution and lithium resource recovery is realized; the negative electrode plate is stepwise calcined, such that a binder PVDF is firstly melted and applied on the surface of the graphite, and then the PVDF is pyrolyzed and carbonized at a high temperature to form an in-situ carbon-coated recovered graphite material, and the modified graphite can still be used as an electrode material for recycling.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
H01M 10/0587 - Structure ou fabrication d'accumulateurs ayant uniquement des éléments de structure enroulés, c. à d. des électrodes positives enroulées, des électrodes négatives enroulées et des séparateurs enroulés
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
77.
NEGATIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF
Disclosed in the present invention are a negative electrode material, a preparation method therefor, and an application thereof. The negative electrode material comprises a silicon-based core, a carbon-based layer wrapped on the surface of the silicon-based core, and a metal phosphide wrapped on the surface of the carbon-based layer, wherein the carbon-based layer has a pore structure. The negative electrode material of the present invention can greatly improve the cycling stability of a silicon-based negative electrode by means of the design of the structure and the components. The present invention also provides a preparation method for and an application of the described negative electrode material.
Disclosed in the present invention are a silicon-carbon material as well as a preparation method therefor and an application thereof. The silicon-carbon material comprises a core and a shell wrapping the core; the core is silicon; the shell is nitrogen and phosphorus co-doped porous carbon. According to the silicon-carbon material of the present invention, by means of the design of the structure and doping atoms, the conductivity of the silicon-carbon material can be remarkably improved, and moreover, a volume change in a charging and discharging process when the silicon-carbon material is used as a negative electrode active material is inhibited; finally, the cycle performance of the obtained silicon-carbon material is improved.
H01M 4/38 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'éléments simples ou d'alliages
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
79.
METHOD AND DEVICE FOR RECOVERING POSITIVE ELECTRODE MATERIAL FROM LITHIUM BATTERY SLURRY
Disclosed in the present invention are a method and a device for recovering a positive electrode material from a lithium battery slurry. The method comprises the following steps: shredding waste material, adding a solvent, and subjecting same to bubble crushing to obtain a first slurry; sieving the first slurry through a discharging hole; subjecting the first slurry with a size smaller than the diameter of the discharging hole to stage-by-stage overflow crushing to obtain a second slurry; subjecting the second slurry to flocculation and filter pressing to obtain a filter cake and a filtrate; and drying, crushing and pyrolyzing the filter cake to obtain a positive electrode material. The method can achieve continuous and large-batch treatment of the waste lithium battery slurry, and simplifies the slurry recovery process. In addition, the positive electrode material and the solvent are effectively separated and recycled; the recovery cost is reduced; and the whole process is environmentally friendly and energy-saving, such that the positive electrode powder can be conveniently treated at a later period. The total content of Ni, Co, Mn and Li metal in the recycled positive electrode powder is 50% or more, and the method has a good recovery value.
1-x-yxyab22, wherein 0 ≤ x ≤ 0.5, 0 ≤ y ≤ 0.6, a > 0, b > 0, and 0.002 ≤ a+b ≤ 0.04; M is at least two of Ni, Co, Mn, Zr, Nb, Sb, Y, Mo, P, S or B; and N is at least one of Al, Mg, Ti, Si, La, Ga, Sr, Co and Mn. The peak-intensity ratio of the positive electrode material of the present invention is greater than 1.8, and the Li/Ni mixing ratio is less than 3%. In addition, the high (003)/(104) peak-intensity ratio (a peak-intensity ratio greater than 1.8) means that cation mixing is sharply reduced, such that the gram volume and the dynamic performance of the positive electrode material are significantly improved.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
Disclosed is a sagger outer surface dust removal device, which comprises a sealed cabin, the sealed cabin being provided with a sagger as well as an air inlet and an air outlet; an air extraction apparatus, which is connected with the air outlet; a dust removal apparatus, which comprises several laser emitters, each laser emitter comprising a ring body, a laser head and a driving motor used for driving the ring body to rotate; a cleaning apparatus, which comprises a cleaning box and a filtering basin, the part of the ring body located outside the cleaning box being an exposed area and the cleaning box being provided with a heating area and a cleaning area connected with the filtering basin. When the driving motor drives the ring body to rotate, part of the surface of the ring body circularly passes through the cleaning area, the heating area and the exposed area in sequence. The laser dust removal apparatus of the device has a lens self-cleaning function, which allows for lens cleaning to ensure that the lens is clean while removing dust, thus improving work efficiency.
Disclosed in the present invention are a production line and production method for a lithium ion battery positive electrode material. The production line comprises a roller kiln; a gas collection apparatus, which is in communication with the roller kiln and is used for collecting a gas from the roller kiln; and a free lithium measurement apparatus, which is used for measuring the content of free lithium in the gas that is collected by the gas collection apparatus. The production line for a lithium ion battery positive electrode material can monitor the state of free lithium in real time, such that a sintering parameter can be assessed in real time, so as to facilitate real-time adjustment of the sintering parameter, thereby reducing unqualified products, and avoiding the waste of raw materials.
F27B 9/30 - Fours dans lesquels la charge est déplacée mécaniquement, p.ex. du type tunnel; Fours similaires dans lesquels la charge se déplace par gravité - Parties constitutives, accessoires ou équipement particuliers aux fours de ces types
F27B 9/40 - Aménagement des dispositifs de commande ou de surveillance
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
83.
PREPARATION METHOD FOR P2-TYPE MANGANESE-BASED SODIUM-ION BATTERY POSITIVE ELECTRODE MATERIAL
A preparation method for a P2-type manganese-based sodium-ion battery positive electrode material, comprises: adding manganese dioxide to an oxalic acid solution for reaction to obtain a first reaction solution; adding a sodium hydroxide solution to the first reaction solution for reaction to obtain a second reaction solution; performing ice bath on the second reaction solution, adding a doped metal-containing alcohol solution for alcohol precipitation, and performing solid-liquid separation to obtain a precipitate; and mixing the precipitate with a manganese source, and grinding and calcining the mixture to obtain the P2-type manganese-based sodium-ion battery positive electrode material. According to the method, sodium manganate trioxalate is prepared by means of a complexation reaction of oxalic acid and manganese dioxide, and neutralization of sodium hydroxide. When the sodium-ion battery positive electrode material is prepared, a precipitate containing sodium manganate trioxalate is used as a sodium source, and no additional sodium source needs to be supplemented during sintering, so that the problem that Na+ in an external sodium source is difficult to completely enter a crystal lattice due to a large ionic radius is avoided, the sodium residues on the surface of the material are reduced, and the electrochemical performance of the material is further improved.
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
Provided in the present invention is a treatment method for wastewater containing a cyanide and an oxalate. The treatment method comprises: first adjusting the pH value of the wastewater, then sequentially adding a ferrite and a flocculant into the wastewater, leaving same to stand for settling, followed by filtering, then sequentially adding an alkali treating agent and a flocculant thereto, subjecting same to solid-liquid separation, and adjusting the pH value of the wastewater again. In the treatment method of the present invention, under weakly acidic to weakly alkaline conditions, excess ferrous ions are first added to enable the ferrous ions to be fully combined with ferricyanide, ferrocyanide and oxalate ions in the wastewater so as to generate precipitates, and then solid-liquid separation is performed, such that the aim of removing cyanide and organic matters is achieved; and then a proper amount of an alkaline reagent is added to enable hydroxyl to react with heavy metal ions and excess ferrous ions in the wastewater so as to generate precipitates, and then solid-liquid separation is performed, such that the aim of removing the heavy metal ions is achieved.
Disclosed in the present invention is a production process of a lithium battery positive electrode material, comprising the following steps: (1) temperature difference test: putting, into a sagger, a material to be sintered, placing the sagger into a roller kiln heat preservation area, setting a same sintering temperature t on the upper layer and the lower layer of the roller kiln heat preservation area according to the characteristics of said material, sintering in a specific atmosphere, and measuring a temperature difference Δt between material surface layer and bottom layer during sintering; and (2) formal sintering: putting said material into the sagger, placing the sagger into the roller kiln heat preservation area, setting the sintering temperature of the upper layer of the roller kiln heat preservation area as t according to the temperature differenceΔt measured in step (1), the sintering temperature of the lower layer being (t+Δt), and sintering said material in a specific atmosphere. The production process can effectively improve the consistency of the prepared lithium battery positive electrode material.
F27B 9/30 - Fours dans lesquels la charge est déplacée mécaniquement, p.ex. du type tunnel; Fours similaires dans lesquels la charge se déplace par gravité - Parties constitutives, accessoires ou équipement particuliers aux fours de ces types
F27B 9/40 - Aménagement des dispositifs de commande ou de surveillance
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
87.
HARD CARBON NEGATIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Disclosed in the present invention are a hard carbon negative electrode material, and a preparation method therefor and the use thereof. A substrate of the hard carbon negative electrode material is prepared by taking starch as a raw material; and the diameter of an internal pore of the hard carbon negative electrode material is greater than that of a surface pore thereof. The rational pore diameter and large interlayer spacing of the hard carbon negative electrode material are beneficial to the intercalation/deintercalation of sodium ions.
Disclosed in the present invention is a preparation method for porous sodium ion battery positive electrode material sodium iron phosphate, comprising mixing ferrous nitrate, silver nitrate, and a reducing agent to prepare a mixed solution; dropwise adding the mixed solution into a carbonate solution for reaction to obtain a precipitate; mixing the precipitate with sodium dihydrogen phosphate and sodium iodide, and then grinding; and sintering the ground material under the condition of air isolation, and soaking the sintered material in an organic solvent to obtain the porous sodium ion battery positive electrode material sodium iron phosphate. According to the present invention, a mixture of silver carbonate and ferrous carbonate is prepared by means of a coprecipitation method; a silver-iron atomic-scale doped eutectic is obtained and then is co-sintered with sodium dihydrogen phosphate and sodium iodide to prepare sodium iron phosphate; when sodium dihydrogen phosphate and ferrous carbonate are subjected to solid phase mixing and sintering, silver carbonate is decomposed into carbon dioxide and silver oxide, and silver oxide is then decomposed into a silver simple substance and oxygen; and the silver simple substance can enhance the conductivity of a material, and does not lead potential safety hazards to a battery like other magnetic foreign matters and impurities.
A preparation method for and an application of a negative electrode plate of a tin-based sulfide sodium-ion battery. The preparation method comprises: heating alloy foil and oxidizing gas for reaction to obtain nano-porous metal foil, the alloy foil being copper-tin alloy or aluminum-tin alloy, and the oxidizing gas being chlorine gas or mixed gas of chlorine gas and inert gas; and placing the metal foil in an organic solvent, then adding tin tetrachloride and an organic sulfide into the organic solvent, and performing a heating reaction in an inert atmosphere to obtain the negative electrode plate of the tin-based sulfide sodium-ion battery. The alloy foil reacts with the chlorine gas, aluminum in the alloy foil is oxidized to form a dense oxide film, copper does not react with the chlorine gas, so that dealloying of tin is achieved and the nano-porous metal foil is obtained; tin disulfide is prepared by using a solvothermal method, and the tin disulfide is inlaid by using nano-pores of the metal foil as a template, so that the subsequent coating process of a negative electrode material is avoided; and the embedded structure is compact, the phenomenon of powder falling is avoided, and the cycle performance of the tin disulfide as a negative electrode material is improved.
H01M 4/1395 - Procédés de fabrication d’électrodes à base de métaux, de Si ou d'alliages
H01M 4/1397 - Procédés de fabrication d’électrodes à base de composés inorganiques autres que les oxydes ou les hydroxydes, p.ex. sulfures, séléniures, tellurures, halogénures ou LiCoFy
A battery conveying belt, comprising a base (1), a plurality of parallel connecting shafts (2), and a plurality of conveying wheels (3). The connecting shafts (2) are mounted on the base (1), and the connecting shafts (2) are arranged at intervals. The conveying wheels (3) are mounted on the connecting shafts (2), and each conveying wheel (3) comprises a stator (31), a rotor (32), a coil (33), a pushing member (34), a receiver (35), a control circuit (36) and a hub (37). The stator (31) is sleeved on a corresponding connecting shaft (2) and fixed together with the connecting shaft (2), the coil (33) is sleeved outside the stator (31), the rotor (32) is sleeved outside the coil (33), a gap is reserved between the rotor (32) and the coil (33), the hub (37) is sleeved outside the rotor (32), a first bearing (323) is connected between the hub (37) and the rotor (32), the pushing member (34) is respectively connected to the hub (37) and the rotor (32), the rotor (32) drives the hub (37) to rotate by means of the pushing member (34), the receiver (35) is located on the rotor (32), and the control circuit (36) is electrically connected to the coil (33) and the receiver (35), respectively. When a battery (7) is placed on the hub (37), the pushing member (34) abuts against the receiver (35). By arranging the receiver (35) on the rotor (32), when the conveying wheel (3) is subjected to the pressure of the battery (7), the rotor (32) can accelerate to drive the hub (37) to rotate.
B65G 47/28 - Dispositifs pour influencer la position relative ou l'orientation des objets pendant le transport par transporteurs arrangeant les objets, p.ex. faisant varier l'espace entre chaque objet pendant le transport par un seul transporteur
B65G 47/24 - Dispositifs pour influencer la position relative ou l'orientation des objets pendant le transport par transporteurs présentant les objets selon un orientement donné
B65G 43/08 - Dispositifs de commande actionnés par l'alimentation, le déplacement ou le déchargement des objets ou matériaux
91.
PREPARATION METHOD FOR ZINC MANGANATE NEGATIVE ELECTRODE MATERIAL
A preparation method for a zinc manganate negative electrode material, which method comprises the following steps: (1) preparing a solution A containing manganese ions and a solution B containing zinc hydroxide; (2) dispersing an adsorption carrier into the solution B; (3) taking alkali liquor as a base solution, and adding the solution A, the solution B and an oxidant solution to the base solution while stirring; (4) subjecting the reacted material to solid-liquid separation to obtain a solid; and (5) washing, drying and calcining the solid to obtain a zinc manganate negative electrode material. The zinc manganate negative electrode material prepared by the preparation method has a good cycle performance.
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
92.
METHOD FOR PREPARING COPPER-BASED NEGATIVE ELECTRODE MATERIAL BY USING WASTE BATTERY
Disclosed in the present invention is a method for preparing a copper-based negative electrode material by using a waste battery. The method comprises the following steps: (1) disassembling a waste battery and taking out a negative electrode plate; (2) using the negative electrode plate of step (1) as an anode, using a copper foil current collector as a cathode, and electroplating same in an electroplating solution; (3) after the completion of the electroplating, collecting a negative electrode powder that is separated from the anode, and soaking the copper foil current collector in an acid solution; (4) washing and drying the soaked copper foil current collector; and (5) calcining the copper foil current collector to obtain a copper-based negative electrode material. By means of the method, the negative electrode powder on the waste battery negative electrode plate can be conveniently recycled, the environment is not polluted, and the prepared copper-based negative electrode material can be directly used as a battery negative electrode and has a relatively good cycling performance.
st444)/F@M-C, 2≤s≤4, and 0.5≤t≤1.5; and M is an oxide of at least one of zinc, nickel, aluminum, manganese, chromium, molybdenum, manganese, copper, and calcium. In the sodium-ion positive electrode material of the present invention, a stabilizer is added so that the structural stability of the positive electrode material is strengthened, and cyclic discharge performance of the material is improved; a coating layer (formed by tightly combining a metal oxide and the positive electrode material) in the sodium-ion positive electrode material can stabilize ion and electron transport kinetic properties of the material, improve cycle performance of the positive electrode material, hinder the material from continuing agglomeration, and control a particle size.
Disclosed in the present invention are a magnetic aluminum-based adsorbent and a preparation method therefor. The preparation method comprises the following steps: mixing a carbon black slag powder, porous aluminum oxide and a polar solution, calcining same, then mixing the magnetic powder with a cross-linking agent, then injecting same into a forming mold for treatment and formation, then stripping same, and activating same, so as to obtain the magnetic aluminum-based adsorbent. The magnetic aluminum-based adsorbent prepared by the preparation method has a relatively high adsorption property and can adsorb low-concentration metal ions in wastewater generated by wet recovery of waste batteries well.
B01J 20/20 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtration; Absorbants ou adsorbants pour la chromatographie; Procédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant du carbone obtenu par des procédés de carbonisation
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtration; Absorbants ou adsorbants pour la chromatographie; Procédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
B01J 20/30 - Procédés de préparation, de régénération ou de réactivation
C02F 1/28 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par absorption ou adsorption
95.
CARBON NANOSHEET-BASED SODIUM-ION BATTERY NEGATIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
The present invention relates to the technical field of batteries, and in particular to a communication method and apparatus for a lithium battery, and a life cycle statistical method. The communication method comprises: acquiring position information of a lithium battery by means of a GPS module, and according to the acquired position information, determining whether the lithium battery is in a pre-stored communicable area; and when the lithium battery is in the pre-stored communicable area, activating a communication module of the lithium battery, such that the communication module is connected to a signal-transmitting unit in the communicable area according to a pre-stored account and password, usage information of the lithium battery is sent to a server by means of the signal-transmitting unit, and the communication module adds serial number information of the battery when sending the usage information. The present invention has the beneficial effect of usage information of the lithium battery being able to be stably and securely sent to a server for storage by determining the position of a lithium battery and connecting same to a signal-transmitting unit in a pre-stored communicable area, thereby preventing data interruption and loss.
G01R 31/371 - Dispositions pour le test, la mesure ou la surveillance de l’état électrique d’accumulateurs ou de batteries, p.ex. de la capacité ou de l’état de charge avec indication à distance, p.ex. sur des chargeurs séparés
G01R 31/382 - Dispositions pour la surveillance de variables des batteries ou des accumulateurs, p.ex. état de charge
A washing method for a ternary precursor. According to the washing method, by means of multi-stage alcohol leaching, on the premise of ensuring that various properties of a washed material to be dried are identical to those of a material to be dried in a conventional washing process, the moisture contained in the washed material is less, and the washed material is easier to dry. In the washing method for the ternary precursor, a washing procedure in a back-end program of an existing washing procedure is replaced with at least two stages of echelon multistage washing procedures, and the mass fraction of an alcohol solution in a post-washing procedure is higher than that of the alcohol solution in a pre-washing procedure. According to the washing procedures, the basic principle of small amount for multiple times of washing is followed, so that the washing consistency is better, and on the premise of ensuring that the various properties of the washed material to be dried are basically identical to those of the material to be dried in the conventional washing process, the moisture contained in the washed material is less, and the washed material is easier to dry.
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
98.
METHOD FOR RECOVERING LITHIUM BATTERY POSITIVE ELECTRODE PLATE
Disclosed in the present invention is a method for recovering a lithium battery positive electrode plate. A method for recovering a lithium battery positive electrode plate. The method comprises the following steps: S1. reacting a positive electrode plate material with a metal salt in an aqueous solution, wherein the standard electrode potential of metal in the metal salt is higher than that of aluminum; S2. dissolving and soaking a solid obtained in step S1 with a mixed solution of an acid and a reducing agent; and S3. subjecting a leachate obtained in step S2 to a fluorine removal treatment, then extracting a transition metal in the leachate, and precipitating and separating lithium from the raffinate. In the method for recovering a lithium battery positive electrode plate of the present invention, aluminum impurities in the positive electrode plate material and fluorine impurities in the leachate can be thoroughly removed by means of the cooperation of all the steps and the raw materials used; in addition, it is guaranteed that the loss rate of valuable metal in the positive electrode plate material is ≤ 0.1%.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
H01M 4/131 - PROCÉDÉS OU MOYENS POUR LA CONVERSION DIRECTE DE L'ÉNERGIE CHIMIQUE EN ÉNERGIE ÉLECTRIQUE, p.ex. BATTERIES Électrodes Électrodes composées d'un ou comprenant un matériau actif Électrodes pour accumulateurs à électrolyte non aqueux, p.ex. pour accumulateurs au lithium; Leurs procédés de fabrication Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p.ex. LiCoOx
99.
ROD-SHAPED SODIUM ION POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
ab4ab44 rod-shaped nanostructure is optimized, and the added nanofibers can relieve stress and size change generated in the process of embedding and removing sodium ions.
Disclosed in the present invention is a method for recycling valuable metal in a lithium battery positive plate, comprising the following steps: S1, mixing a positive plate material with reducing metal, and then roasting, the roasting being carried out in a protective atmosphere; S2, performing magnetic separation on the material obtained in step S1 to obtain a magnetic component and a non-magnetic component; S3, performing acid dissolution on the magnetic component, concentrating the obtained leaching solution, and then performing cooling crystallization to obtain a metal salt A; and S4, performing water soaking on the non-magnetic component to obtain sediment and water soaking liquid, adding carbonate into the water soaking liquid to obtain lithium carbonate, performing acid dissolution on the sediment, purifying, and performing evaporative crystallization to obtain a dissolved solution to obtain a metal salt B. According to the recycling method of the present invention, the purpose of omitting extraction and accessory steps thereof can be achieved by means of simple impurity removal and separation processes, the technological process is simplified, and the investment cost is reduced.
C30B 7/14 - Croissance des monocristaux à partir de solutions en utilisant des solvants liquides à la température ordinaire, p.ex. à partir de solutions aqueuses le matériau à cristalliser étant produit dans la solution par des réactions chimiques
C30B 28/04 - Production de matériaux polycristallins homogènes de structure déterminée à partir de liquides
C30B 29/46 - Composés contenant du soufre, du sélénium ou du tellure
C25C 3/06 - Production, récupération ou affinage électrolytique de métaux par électrolyse de bains fondus de l'aluminium
brevets
