The invention belongs to the technical field of material synthesis, and discloses a nitrogen-doped hollow cobaltosic oxide and a preparation method and application thereof. A chemical formula of the nitrogen-doped hollow cobaltosic oxide is Co3O4—COF-T-D@C—N; and the COF-T-D is a covalent organic framework. Due to an open hollow structure, the nitrogen-doped hollow cobaltosic oxide of the invention has a large specific surface area, thus having a large contact area with an electrolyte, which is convenient for lithium ions to transport therein. The open hollow structure also prevents a volume effect from being generated during charging and discharging, and nitrogen is introduced for doping, so that granules can be gradually activated to increase the specific surface area and active sites, a discharge (cycle) stability of the material is improved, and a rate performance of the material is improved.
Disclosed in the present invention is a method for recovering nickel from iron-aluminum slag obtained by battery powder leaching. The method comprises the following steps: adding a sulfuric acid solution into an iron-aluminum slag to dissolve, so as to obtain a sulfate solution; then adding an oxidizing agent; adding ammonia water and carbonate into the oxidized sulfate solution; adjusting the pH to 1.0-3.2 for reaction; separating ferric hydroxide to precipitate to obtain an iron-removed solution; adding carbonate into the iron-removed solution, adjusting the pH to 3.2-5.5 for reaction; separating aluminum hydroxide to precipitate to obtain an aluminum-removed solution; adding ammonia water to the aluminum-removed solution, adjusting the pH to 7.0-8.8 for reaction; washing and removing impurities to obtain a nickel complex; adding an oxidizing agent to the nickel complex to break the complex, so as to obtain a nickel-containing solution. By means of the present method, efficient separation of iron, aluminum and nickel in the iron-aluminum slag is efficiently achieved, the separation effect of iron, aluminum and nickel is improved, the loss of nickel is reduced, and the recovery rate of nickel is improved.
C22B 3/00 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés
C01F 7/441 - Déshydratation de l’oxyde ou de l'hydroxyde d'aluminium, c. à d. toutes les conversions d'une forme en une autre impliquant une perte d’eau par calcination
A metal sulfide negative material of a sodium ion battery and a preparation method thereof. The material has porous nanoparticles with a particle size of 5 nm to 500 nm, and the metal sulfide negative material of the sodium ion battery is at least one of zinc sulfide or copper sulfide. The preparation method includes the steps of preparing a mixed solution of stannous chloride and metal salt, adding polyvinylpyrrolidone into the mixed solution to obtain a solution A, introducing reaction gas into the solution A, aging after the reaction to obtain a precipitate, and soaking the precipitate in a persulfide solution to obtain the metal sulfide sodium ion battery negative material.
H01M 10/054 - Accumulateurs à insertion ou intercalation de métaux autres que le lithium, p.ex. au magnésium ou à l'aluminium
H01M 4/02 - 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
4.
DISASSEMBLING AND DISCHARGING DEVICE FOR BATTERY RECYCLING
A disassembling and discharging device for battery recycling includes a crushing assembly, a high pressure tank, at least one pressure relief tank, and a filtering tank. The crushing assembly is provided with a first feed port and a first discharge port communicated with the first feed port; the high pressure tank is provided with a first inner cavity for containing discharging liquid, and the first inner cavity is communicated with the first discharge port; the pressure relief tank is provided with a second inner cavity, and the second inner cavity is communicated with the first inner cavity; and the filtering tank is provided with a third inner cavity, and the third inner cavity is communicated with the second inner cavity.
Disclosed in the present invention is a method for extracting nickel from a high matte nickel leaching residue. The method comprises: firstly, adding a crushed material of a high matte nickel leaching residue to an organic solvent in which sulfur is dissolved, heating same for reaction, and carrying out solid-liquid separation to obtain a first filtrate and a first filter residue; adding the first filter residue to a copper sulfate solution, heating same for reaction, and carrying out solid-liquid separation to obtain a second filtrate and a second filter residue; and evaporating, condensing and concentrating the second filtrate, and filtering same to obtain copper sulfate crystals and a nickel-containing filtrate. Throughout the whole reaction, only a small amount of sulfur and copper sulfate are consumed, and the organic solvent can be recycled.
C22B 3/22 - Traitement ou purification de solutions, p.ex. de solutions obtenues par lixiviation par des procédés physiques, p.ex. par filtration, par des moyens magnétiques
C22B 3/44 - Traitement ou purification de solutions, p.ex. de solutions obtenues par lixiviation par des procédés chimiques
6.
LAYERED SODIUM ION BATTERY POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR
A layered sodium ion battery positive electrode material and a preparation method therefor. The chemical formula of the layered sodium ion battery positive electrode material is NaxMnO2-a(MO4)a, wherein 0
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
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 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
7.
PREPARATION METHOD FOR PRUSSIAN BLUE SODIUM-ION BATTERY POSITIVE ELECTRODE MATERIAL
Disclosed is a preparation method for a Prussian blue sodium-ion battery positive electrode material, comprising: adding a first nonionic surfactant and an antioxidant into a sodium ferrocyanide solution to obtain a first solution; adding a second nonionic surfactant into a transition metal salt solution to obtain a second solution; in a protective atmosphere, adding the second solution into the first solution for a precipitation reaction; aging after the reaction has finished; collecting a precipitate, washing same, and carrying out vacuum drying on the washed precipitate; then soaking same in an alcohol solution containing sodium alkoxide; and then filtering same and steam drying to obtain a Prussian blue sodium ion battery positive electrode material. The method may relieve vacuum drying pressure and shorten drying time.
A gas absorption box includes a box body, at least one gas absorption member and an outer housing assembly, the box body has an accommodating cavity; the gas absorption member is elastic and is provided with a first inner cavity, and the first inner cavity is in communication with the outside of the box body; and the outer housing assembly is arranged in the accommodating cavity and is elastically connected to the box body, and the outer housing assembly has a second inner cavity for accommodating a gas absorbent, the second inner cavity being in communication with the first inner cavity, and the gas absorption member being capable of absorbing gas for the second inner cavity. When battery powder or some positive-electrode materials for batteries are transported, hydrogen generated by the battery powder or some positive-electrode materials for batteries gathers towards the upper portion of a ton bag.
B65D 81/32 - Réceptacles, éléments d'emballage ou paquets pour contenus présentant des problèmes particuliers de stockage ou de transport ou adaptés pour servir à d'autres fins que l'emballage après avoir été vidés de leur contenu pour emballer plusieurs matériaux différents qui doivent être maintenus séparés avant d’être mélangés
9.
ROD-SHAPED SODIUM ION POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Disclosed are a rod-shaped sodium ion positive electrode material, a preparation method therefor and an application thereof. The material comprises a rod-shaped base material and nanofibers inserted into the base material. C—Na is loaded on the nanofibers. The chemical general formula of the rod-shaped sodium ion positive electrode material is Na(FeaTb)PO4/CNF-c(C—Na), and 0.001≤c≤0.1, wherein T is at least one of Ni, Co, Zn, Mn, Fe, V, Ti or Mo, 0.9≤a<1, 0
The present disclosure discloses a method for extracting lithium from waste lithium batteries, which comprises: leaching positive electrode powder of the waste lithium battery in hydrochloric acid, and obtaining leaching solution by filtering; removing copper and iron from the leaching solution, and then introducing hydrogen sulfide gas for reaction, and performing solid-liquid separation to obtain first filter residue and first filtrate; adding potassium permanganate to the first filtrate, and performing solid-liquid separation to obtain second filter residue and second filtrate; performing spray pyrolysis on the second filtrate to obtain solid particles and tail gas, washing the solid particles with water to obtain a lotion, washing and collecting the tail gas and then mixing the tail gas with the lotion to obtain lithium salt solution. In the present disclosure, the positive electrode powder is leached with hydrochloric acid to obtain the hydrochloric acid leaching solution, and hydrogen sulfide is used to precipitate nickel and cobalt after removing the copper and iron impurities in the leaching solution in turn, and potassium permanganate is added to precipitate manganese ions to generate manganese dioxide. Spray pyrolysis converts the aluminum and magnesium in the solution into oxides and lithium salt is separated. The entire reaction process does not require organic solvent extraction and reduces the loss of lithium.
The present invention relates to a method for preparing nickel sulfate using low-nickel ferronickel is disclosed. The method comprises the following steps: (1) grinding ferronickel to obtain ferronickel powder, and then sintering the ferronickel powder with an oxidant to prepare ferronickel oxide powder; (2) adding sulfuric acid to the ferronickel oxide powder prepared in step (1), mixing, heating, and washing with water to prepare a sulfate salt water washing solution; (3) adding a base to the sulfate salt water washing solution prepared in step (2) to adjust the pH value, then adding a fluoride salt to form a precipitate, filtering to remove the precipitate, and drying the filtrate to obtain nickel sulfate. The method provided in the present invention can improve the efficiency of preparing nickel sulfate, reduce the loss of nickel, and prepare nickel sulfate with high purity, the content of Ni potentially reaching 19.73%-21.34%.
The disclosure belongs to the technical field of sodium ion battery materials, and discloses a preparation method of a hard carbon anode material and use thereof. The preparation method includes the following steps of: performing first sintering on starch, crushing, and introducing air and nitrogen for secondary sintering to obtain porous hard block granules; and performing third sintering on the porous hard block granules, and then continuously warming up to perform fourth sintering to obtain the hard carbon anode material. The hard carbon anode material prepared by the disclosure has a reversible capacity of no less than 330 mAh/g, excellent cycle stability and initial coulomb efficiency.
Disclosed is a preparation method of porous sodium iron phosphate used as a sodium ion battery cathode material, which includes: mixing ferrous nitrate, silver nitrate and a reducing agent to prepare a mixed solution, adding the mixed solution dropwise to a carbonate solution for reaction to obtain a precipitate, mixing the precipitate with sodium dihydrogen phosphate and sodium iodide and then grinding, sintering the ground material under the condition of air isolation, and soaking the sintered material in an organic solvent to obtain porous sodium iron phosphate used as a sodium ion battery cathode material.
The present disclosure discloses a preparation method of a hard carbon (HC) anode material and use thereof. The preparation method includes the following steps: mixing a substance A, a first alcohol liquid, and an oxidant to obtain a peroxide gel of the substance A, and dissolving a substance B in a second alcohol liquid to obtain an amino-containing solution; mixing the peroxide gel of the substance A with the amino-containing solution to allow a reaction to obtain a post-reaction slurry; and lyophilizing the post-reaction slurry to obtain a dry powder, subjecting the dry powder to calcination in a protective atmosphere to obtain a calcined material, soaking the calcined material in an acid liquid, and water-washing and drying to obtain the HC anode material.
Disclosed are a preparation method of a carbon dioxide capture agent and an application thereof. The method includes: mixing a graphite dispersion, an organic acid solution, a metal salt solution and a silica sol to obtain an organic-inorganic composite gel; standing and aging the organic-inorganic composite gel, drying the same and then carbonizing the same by microwave in a mixed atmosphere of inert gas and sulfur dioxide to obtain an intermediate product; and subjecting the intermediate product to acid washing or alkali washing to obtain a defective carrier, then mixing the defective carrier with an amine substance for ultrasonic treatment and drying to obtain the carbon dioxide capture agent.
B01D 53/22 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par diffusion
B01D 53/02 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p.ex. chromatographie préparatoire en phase gazeuse
B01J 20/22 - 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 organique
The invention belongs to the field of battery material recovery, and discloses a preparation method and application of heterosite phosphate. The method comprises the following steps: mixing lithium iron phosphate with a solvent, adding an acid solution, and adjusting the pH to obtain an acidic lithium iron phosphate liquid; adding a transition metal additive to the acidic lithium iron phosphate liquid, and performing leaching in an intensifying micro-environment, followed by filtrating to obtain heterosite iron phosphate and a lithium-rich solution. The leaching rate of lithium in the leaching solution reaches 90.5-99.9%, and both of the iron and phosphorus content in the leaching solution are less than 0.1 ppm; the recovered heterosite iron phosphate has a purity of 99.9%, and the recovery rate of the heterosite iron phosphate is 99.3%.
A method for preparing a refractory material from waste battery residues. The method comprises the following steps: (1) disassembling waste batteries, then sorting same to obtain positive and negative electrode powders, leaching the positive and negative electrode powders with an acid, filtering same to obtain a graphite slag, and then subjecting the filtrate to copper removal, followed by the addition of an alkali for a precipitation reaction, wherein the resulting precipitate is an iron-aluminum slag; (2) wrapping the graphite slag obtained in step (1) with wet clay to form an inner core material, then mixing wet clay with the iron-aluminum slag, wrapping the inner core material with same, and aging the wrapped inner core material to obtain a blank; (3) pre-sintering, calcining and cooling the blank prepared in step (2) to obtain a fired product; and (4) washing and drying the fired product to obtain the refractory material.
The present invention provides a method for directly preparing nickel sulfate from low nickel matte, a nickel sulfate and an application thereof, the method comprising the following steps: a) pre-treating a low nickel matte to obtain ferronickel powder; b) mixing the ferronickel powder with a sulfuric acid solution, stirring, dissolving, and then evaporating, to obtain a supersaturated sulfate solution; c) cooling the supersaturated sulfate solution to −5° C.-0° C., and performing suction filtration to obtain an insoluble solid; d) washing the insoluble solid with water, and removing impurities from the filtrate to obtain a nickel hydroxide precipitate; impurity removal comprising successively removing iron, and removing calcium and magnesium; e) washing the nickel hydroxide precipitate with water, acid-dissolving and evaporating to obtain nickel sulfate. The present invention increases the amount of nickel recovered, the purity of nickel sulfate being 18.10%-19.24% nickel, and the recovery rate being 94.8%-97.1%.
Disclosed in the present invention is a method for extracting valuable metal from low-matte nickel converter slag. The method comprises: mixing low-matte nickel converter slag and quicklime then calcinating, obtaining a calcinated material; grinding and magnetically separating the calcinated material, obtaining silicate and iron-rich slag; adding a strong alkali solution to the iron-rich slag to perform leaching processing, and performing solid-liquid separation, obtaining a filtrate and a residue; mixing the residue with an acid solution, performing oxygen pressure acid leaching, and performing solid-liquid separation, obtaining a leachate and iron oxide; introducing hydrogen sulfide gas into the leachate, adjusting the pH, and performing solid-liquid separation, obtaining a copper sulfide precipitate and a nickel-cobalt-containing filtrate. In the present invention, first, removing silicon dioxide is removed by means of calcination to prepare silicate, then iron oxide is prepared by means of acid leaching, and finally metal separation is performed on the leachate, causing various components of the converter slag to be effectively utilized. The process flow of the present invention is short and effectively utilizes each component of the low-matte nickel converter slag, waste is turned into valuable material, and the loss of valuable metal elements is reduced.
Disclosed are a method for selectively extracting lithium from a retired battery and an application of the method. According to the method, on the basis of an ion exchange effect between a divalent manganese ion and a lithium ion, a positive electrode material and a divalent manganese salt are mixed according to a certain proportion and prepared into a slurry, and the divalent manganese salt and the positive electrode material are fully mixed by means of a ball milling process, such that a lattice structure of the positive electrode material is effectively damaged, thereby reducing activation energy of exchange of the divalent manganese ion and the lithium ion and greatly reducing reaction energy required by a subsequence lithium extraction process. A mixed material after ball milling is roasted at a lower temperature such that the bivalent manganese in the manganese salt occupies a lithium position in a layered structure, and manganese-lithium replacement is directly performed to obtain a pure lithium-containing leaching solution. The present method greatly improves the leaching rate and selectivity of lithium. The present invention uses a mode of first performing ball-mill mixing and then performing roasting, and thus has low power consumption, high safety, good leaching rate and selectivity of lithium, and wide application prospects.
Disclosed are a nickel-iron wet treatment method and an application thereof. The treatment method comprises: in a high-pressure oxygen environment, mixing a crushed nickel-iron material, sulphuric acid and a corrosion aid, performing an acid leaching reaction, then performing solid-liquid separation on slurry subjected to acid leaching, adding an oxidant into the obtained filtrate, performing heating, removing the corrosion aid, adding a precipitating agent into the filtrate, controlling the pH value of the filtrate, and performing solid-liquid separation to obtain a ferric hydroxide precipitate and a nickel-containing filtrate; and performing extraction and back extraction on the nickel-containing filtrate to prepare battery-grade nickel sulphate. According to the present invention, the nickel-iron is subjected to oxidation acid dissolution in cooperation with the corrosion aid under the high-pressure oxygen and acidic conditions; the nickel-iron is extremely prone to oxidation in the high-pressure oxygen environment; and a strong oxidant is added into the filtrate subsequently, so that ferrous ions in the filtrate are completely converted into ferric ions, and the corrosion aid can be oxidized to generate pollution-free carbon dioxide and water, thereby avoiding the impact of the corrosion aid on the subsequent extraction process.
C22B 3/22 - Traitement ou purification de solutions, p.ex. de solutions obtenues par lixiviation par des procédés physiques, p.ex. par filtration, par des moyens magnétiques
A doped sodium vanadium phosphate and a preparation method and application thereof. Preparation steps of a nitrogen-doped peony-shaped molybdenum oxide in raw materials of the doped sodium vanadium phosphate are as follows: adding a regulator into a molybdenum-containing solution for reaction, concentrating and thermal treatment to obtain a peony-shaped molybdenum oxide; and dissolving the peony-shaped molybdenum oxide in a conditioning agent, and adding an amine source for standing, centrifuging, washing and heat treatment, thus obtaining the nitrogen-doped peony-shaped molybdenum oxide.
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p.ex. phosphates, silicates ou borates
H01M 10/054 - Accumulateurs à insertion ou intercalation de métaux autres que le lithium, p.ex. au magnésium ou à l'aluminium
H01M 4/02 - 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
23.
PREPARATION METHOD FOR NANO FERRIC PHOSPHATE WITH LOW SULPHUR CONTENT
A method for preparing nano iron phosphate with low sulfur content. The method may include: S1: mixing a phosphorus source and an iron source to obtain a raw material solution, then adding alkali and a surfactant, adjusting a pH, and stirring and reacting to obtain an iron phosphate dihydrate slurry, S2: adding phosphoric acid solution into the iron phosphate dihydrate slurry, adjusting the pH, heating and stirring for aging, and filtering to obtain iron phosphate dihydrate, S3: adding water into the iron phosphate dihydrate for slurrying, and grinding to obtain a ground slurry; and S4: adding the ground slurry into a washing solution to wash, carrying out solid-liquid separation, and calcining a solid phase to obtain the nano iron phosphate with low sulfur content.
The present disclosure discloses a preparation method of a Ni-Rich ternary precursor and use thereof. The preparation method includes the following steps: under specified conditions, feeding an alkali liquor and a metal salt solution simultaneously for a precipitation reaction to obtain particles with D50 of 7.0 μm to 15.0 μm; continuously feeding a seed crystal, and after D10 of the particles is adjusted to 2.0 μm to 7.0 μm, stopping feeding the seed crystal; continuously feeding the alkali liquor and the metal salt solution, and collecting an overflow material; and when a particle size grows to D50 of 7.0 μm to 15.0 μm once again, repeating the above operation of adding a seed crystal, and continuously collecting an overflow material; and washing, drying, and sieving the collected materials to obtain the Ni-Rich ternary precursor.
The present disclosure discloses a preparation method of a ternary precursor, including: S1: mixing a first metal salt solution with a soluble nickel salt, a soluble cobalt salt, and a soluble manganese salt, ammonia water, and a sodium hydroxide solution, adjusting a pH, and heating and stirring a resulting mixture to allow a reaction; and aging and filtering a resulting slurry to obtain a precursor seed crystal; S2: adding the precursor seed crystal to a dilute acid solution, and stirring and filtering a resulting mixture to obtain an acidified seed crystal; and S3: mixing a second metal salt solution with a soluble nickel salt, a soluble cobalt salt, and a soluble manganese salt, a sodium hydroxide solution, and the acidified seed crystal, adjusting a pH, and heating and stirring a resulting mixture to allow a reaction; and aging, filtering, and drying a resulting slurry to obtain the ternary precursor.
The present disclosure belongs to the technical field of battery recycling, and discloses a recycling method and use of lithium iron phosphate (LFP) waste. The method includes the following steps: mixing the LFP waste with water to prepare a slurry; adjusting a pH of the slurry to higher than 7.0 with an alkali, and heating to react; filtering a resulting mixture to obtain a filter residue; dissolving the filter residue in an acid, and filtering to obtain a filtrate; adding an oxalate-containing solution to react, and aging and filtering a resulting mixture to obtain a filter cake and a precipitation mother liquor; and subjecting the filter cake to slurrying, washing, and free water removal to obtain ferrous oxalate.
The present disclosure discloses a high-performance lithium-nickel-manganese-cobalt oxide (LNMCO) cathode material for power batteries and a preparation method thereof, and belongs to the technical field of lithium-ion battery (LIB) materials. The preparation method of an LNMCO cathode material of the present disclosure combines a melting and mixing method, a spray drying method, a sol-gel method, and a high-temperature solid-phase method to achieve thorough mixing of various components of a precursor, such that a prepared product has a uniform particle size, excellent electrochemical performance, and high cycling stability. The method has simple operation steps, low raw material cost, small time consumption, and high production efficiency, and can realize industrialized large-scale production. The present disclosure also provides an LNMCO cathode material prepared by the method, which has high specific charge/discharge capacity, thermal stability, and cycling stability.
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
28.
METHOD FOR RECOVERING ALUMINUM RESIDUE WITH CONTROLLED PARTICLE SIZE, AND USE THEREOF
The present disclosure belongs to the technical field of battery recycling, and discloses a method for recovering an aluminum residue with a controlled particle size, and use thereof. The method includes the following steps: crushing and sieving a positive electrode sheet of a waste power battery, then, crushing at −198° C. to −196° C. with addition of liquid nitrogen to obtain a granular material; roasting, cooling, and grinding the granular material, adding water, shaking, settling into layers, and separating the layers to obtain a positive electrode active powder layer, a transition layer, and an aluminum residue particle layer; and shaking the aluminum residue particle layer and the transition layer for a second time, settling into layers, and collecting aluminum residue particles and a positive electrode active powder.
The present disclosure discloses a method for recycling iron phosphate waste and use thereof. The method includes: mixing the iron phosphate waste with an acid liquid for dissolution to obtain an iron-phosphorus solution; taking a small portion of the iron-phosphorus solution to prepare an iron phosphate precipitating agent; adding the iron phosphate precipitating agent to a remaining portion of the iron-phosphorus solution to react to obtain an iron phosphate dihydrate precipitate; and keeping a portion of the iron phosphate dihydrate precipitate as a precipitating agent for a reaction in a subsequent batch, and preparing a remaining portion of the iron phosphate dihydrate precipitate into anhydrous iron phosphate. In the present disclosure, an iron phosphate precipitating agent is prepared and used for the subsequent preparation of iron phosphate, and iron phosphate obtained in each preparation can be used for the next preparation of iron phosphate.
The present disclosure belongs to the technical field of metal oxide materials, and discloses a synthesis method of cobalt hydroxide and cobalt hydroxide. The synthesis method includes: (1) stirring and heating ammonium citrate, introducing a protective gas, adding a cobalt salt and a mixed alkali liquor to allow a reaction, and adjusting a pH to obtain a cobalt hydroxide slurry; and (2) subjecting the cobalt hydroxide slurry to alkali-leaching, filtering, and slurrying a resulting filter residue; and washing a resulting slurry with a detergent, and drying the resulting slurry to obtain the cobalt hydroxide. In the present disclosure, ammonium citrate is used as a base solution, and a cobalt solution and a mixed alkali liquor are added to synthesize a cobalt hydroxide slurry in one step under a protective atmosphere.
The present disclosure discloses a method for preparing nickel sulfate from ferronickel, including: S1: in a high-pressure oxygen environment, mixing crushed ferronickel with sulfuric acid, introducing a carbon monoxide gas to allow a reaction, and conducting solid-liquid separation (SLS) to obtain a filtrate and a filter residue; S2: adding an oxidizing agent and a precipitating agent successively to the filtrate, controlling a pH of the filtrate, and conducting SLS to obtain a nickel-containing filtrate and an iron hydroxide precipitate; and S3: subjecting the nickel-containing filtrate to extraction and back-extraction to obtain a nickel sulfate solution. In the present disclosure, the carbon monoxide gas is introduced under high-pressure acidic conditions to first react with nickel and iron to form nickel tetracarbonyl and iron pentacarbonyl, and the nickel tetracarbonyl and iron pentacarbonyl are oxidized by oxygen and then smoothly react with sulfuric acid to form nickel sulfate and iron sulfate.
The present disclosure discloses a method for preparing a ternary cathode material with a molten salt and use thereof. The method includes: mixing a nickel salt, a cobalt salt, a manganese salt, a metal oxide and an acid liquor to obtain a mixed salt solution; concurrently adding the mixed salt solution, a sodium hydroxide solution and ammonia water to a base solution to allow a reaction to obtain a precursor; and mixing the precursor, a lithium source and a molten salt, and subjecting a resulting mixture to sintering, water-washing and annealing to obtain the ternary cathode material. In the present disclosure, a bismuth/antimony-doped ternary precursor is prepared, which is sintered with a molten salt, during which bismuth/antimony oxide is melted in the molten salt, then a resulting mixture is washed with water, and annealed to form a coating layer on a surface of the material.
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
33.
CATHODE MATERIAL DRYING DEVICE AND CATHODE MATERIAL DRYING PRODUCTION LINE
This application discloses a cathode material drying device and a cathode material drying production line. The cathode material drying device includes: a rotary kiln, where a kiln head and a kiln tail of the rotary kiln each are provided with a sealing structure and the rotary kiln can rotate relative to the sealing structure; and an exhaust system comprising an air inlet pipe, an air outlet pipe, and a first fan, where the air inlet pipe communicates with the kiln tail of the rotary kiln through the sealing structure; the air outlet pipe communicates with the kiln head of the rotary kiln through the sealing structure; and the first fan is arranged on the air inlet pipe and/or the air outlet pipe, so as to make an air flow direction in the rotary kiln opposite to a delivery direction of a cathode material.
F27B 7/24 - Dispositifs d'étanchéité entre les pièces rotatives et fixes
F26B 25/00 - SÉCHAGE DE MATÉRIAUX SOLIDES OU D'OBJETS PAR ÉLIMINATION DU LIQUIDE QUI Y EST CONTENU - Parties constitutives d'application générale non couvertes par un des groupes ou
F27B 7/33 - Aménagement des dispositifs de déchargement
34.
PREPARATION METHOD OF LAYERED CARBON-DOPED SODIUM IRON PHOSPHATE CATHODE MATERIAL
The present disclosure discloses a preparation method of a layered carbon-doped sodium iron phosphate cathode material, including: placing a carbonate powder in an inert atmosphere, introducing a gaseous organic matter, and heating to allow a reaction to obtain a MCO3/C layered carbon material; and mixing the MCO3/C layered carbon material, a sodium source, ferrous phosphate, and a dispersing agent in an inert atmosphere, grinding a resulting mixture, washing and drying to remove the dispersing agent, and heating to allow a reaction in an inert atmosphere to obtain the layered carbon-doped sodium iron phosphate cathode material.
The present disclosure belongs to the technical field of battery materials, and discloses a silicon/carbon composite anode material, and a preparation method and use thereof. The preparation method includes the following steps: S1. dissolving a graphite anode powder in an acid solution, and conducting solid-liquid separation (SLS) to obtain a precipitate; and washing and drying the precipitate, adding a reducing agent, and subjecting a resulting mixture to heat treatment to obtain a purified graphite material; and S2. mixing a modified silicon powder with the graphite material, adding a resulting mixture to a polyimide (PI)-containing N,N-dimethylformamide (DMF) solution, and stirring; and subjecting a resulting mixture to distillation and then to carbonization to obtain the silicon/carbon composite anode material.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/38 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'éléments simples ou d'alliages
H01M 4/587 - Matériau carboné, p.ex. composés au graphite d'intercalation ou CFx pour insérer ou intercaler des métaux légers
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 10/54 - Récupération des parties utiles des accumulateurs usagés
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.
The invention belongs to the technical field of batteries, and discloses a preparation method and application of a lithium cobalt oxide soft-pack battery. The preparation method comprises the following steps: preparation of a lithium cobalt oxide positive electrode; preparation of a graphite negative electrode; preparation of an aluminum plastic film; screening and tab welding the positive and negative electrode, then winding core and packing, injecting an electrolyte to a resulting pack, perform first sealing, formation, second sealing; followed by capacity grading to obtain the lithium cobalt oxide soft pack battery. The preparation method for the lithium cobalt oxide soft-pack battery in a laboratory environment at room temperature provided by the present invention has simple operation and low environmental requirements, can be used in laboratories without dry room conditions, and reduces research and development cost and laboratory maintenance cost.
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
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 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 50/536 - Connexions d’électrodes dans un boîtier de batterie caractérisées par le procédé de fixation des conducteurs aux électrodes, p.ex. soudage
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
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
43.
PRECURSOR WITH TRANSFORMED CRYSTAL FORM AND PREPARATION METHOD THEREOF
The disclosure discloses a precursor with a transformed crystal form and a preparation method thereof. The preparation method includes: (1) heating a carbonate solution, a cobalt salt to allow a reaction, and spray adding a carbonate solution to allow a reaction to obtain a cobalt carbonate slurry; (2) allowing the slurry to stand, spray adding a cobalt salt and a carbonate solution, and spray adding a cobalt salt using a single spray head at a flow rate of 1 m3/h to 3 m3/h and a carbonate solution using no less than three spray heads each at a flow rate of 0.2 m3/h to 5 m3/h to obtain cobalt carbonate with a transformed crystal form; and (3) further spray adding a cobalt salt and a carbonate solution to the cobalt carbonate with a transformed crystal form, heating to allow a constant-temperature reaction, and washing and calcining a product.
Disclosed in the present invention is a method for preparing nickel sulfate from a nickel-iron-copper alloy. The method comprises: in a high-pressure oxygen environment, mixing a nickel-iron-copper alloy crushed material, aqueous ammonia, ammonium sulphate, and a corrosion assisting agent, leaching, then performing solid-liquid separation on the leached slurry, adding a precipitant into a filtrate, and performing ammonia distillation to obtain a nickel-containing leachate; then adding an extractant into the nickel-containing leachate to extract nickel so as to obtain a nickel-containing extraction organic phase; and then adding sulfuric acid into the nickel-containing extraction organic phase to perform back extraction of nickel so as to obtain a nickel sulfate solution. According to the present invention, the nickel-iron-copper alloy is separated by using different properties of nickel and iron, nickel is dissolved in a hexamine complex of nickel, iron cannot be dissolved and then continues to be remained in a solid, after the filtrate is collected, the precipitant is added and ammonia distillation is performed to remove copper, the aqueous ammonia is recycled, and the copper ions react with the precipitant to generate a copper sulfide precipitate, and thus, copper in the filtrate is removed, and the purity of nickel sulfate is further improved.
The present disclosure discloses a preparation method and use of a high-performance modified lithium-nickel-manganese-cobalt oxide (LNMCO) nickel 55 material. In the preparation method of the present disclosure, a silica template-containing nano-precursor coated with a polymer is prepared by electrospinning, and then the nano-precursor is sintered in the air to effectively provide effective embedding and attachment sites for subsequent nickel plating; and after the nickel plating, the silica template is removed such that distributed mesopores are generated in situ on the precursor. The mesopores provide channels for the subsequent penetration of molten lithium into the interior of the precursor material. A final prepared material has a better ion and electron conduction structure compared with traditional granular materials. The present disclosure also discloses a material prepared by the method. The present disclosure also discloses an LIB including the high-performance modified LNMCO nickel 55 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 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 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p.ex. liants, charges
The present invention discloses a radially-structured nickel-based precursor and a preparation method thereof. An overall shape of the precursor is a secondary sphere formed by agglomeration of primary crystal grains; and the secondary sphere has a loose and porous network core inside and uniform and regular strip primary crystal grains outside, and the strip primary crystal grains grow outward perpendicularly to a surface of the core and are arranged radially and closely. The precursor structure of the present invention is more suitable for high-power battery cathode materials. The internal loose structure is more likely to form a void in the center during a preparation process of a cathode material, which helps to expand a contact area between an active material and an electrolyte.
A method for recovering lithium battery slurry, the method comprising: pretreating lithium battery slurry, and then subjecting the pretreated lithium battery slurry to centrifugal spray drying to separate a solid phase and a solvent. A device for the recovery of lithium battery slurry is a centrifugal spray drying system, and comprises a spray chamber (100), a cyclone separator (200), a condenser (400), a condensate storage tank (500), and a rectification tower (600); the system improves upon original centrifugal spray drying devices, and is designed to combine the processes of centrifugal spray drying and NMP condensation recovery, such that NMP can be directly recovered after separation of positive electrode material and the NMP.
The invention belongs to the technical field of lithium ion battery materials, and discloses a fast ionic conductor coated lithium-transition metal oxide material having a chemical formula of (1−x)Li1+a (Ni(1−m−n)ConMnm) 1−bMbO2·xLicAldTieM′fM″g (PO4)3 and a preparation method thereof. The fast ionic conductor coated lithium-transition metal oxide material of the present invention has lower impedance, excellent cycle performance and safety performance under high voltage, especially when the charging voltage is greater than 4.62V, 4.65V, or higher. The Lithium-transition metal oxide can be obtained by a primary calcination, and the final product of lithium-transition metal oxide material coated with fast ionic conductor can be obtained by a secondary calcination.
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.
SINTERING-RESISTANT MATERIAL, AND PREPARATION METHOD AND USE THEREOF
The present disclosure discloses a sintering-resistant material, and a preparation method and use thereof. The sintering-resistant material includes magnesium oxide, an anti-corrosive agent, an antioxidant, and a binder, where the anti-corrosive agent includes a barite powder and a porous graphite powder; the antioxidant includes aluminum carbide and an aluminum powder; the binder includes a metal chloride and a silica sol; and metals in the raw materials are all extracted from a hydrochloric acid leachate of an electric furnace slag. In the present disclosure, the preparation method of the present disclosure improves the resource utilization of the electric furnace slag. Magnesium and aluminum have the largest proportion among metal elements in the electric furnace slag, and thus magnesium oxide is used as the main material. In addition, other chloride salts leached out from the electric furnace slag by hydrochloric acid can be directly or indirectly used.
C04B 35/04 - Produits céramiques mis en forme, caractérisés par leur composition; Compositions céramiques; Traitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base d'oxydes à base d'oxyde de magnésium, d'oxyde de calcium ou de mélanges d'oxydes dérivés de la dolomite à base d'oxyde de magnésium
C04B 35/622 - Procédés de mise en forme; Traitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques
C04B 35/63 - Préparation ou traitement des poudres individuellement ou par fournées utilisant des additifs spécialement adaptés à la formation des produits
The present disclosure discloses a preparation method of platy aluminum-doped cobalt carbonate and use thereof. The preparation method includes the following steps: S1: mixing a cobalt salt, an aluminum salt, and a polyhydroxy compound to prepare a mixed solution; S2: mixing the mixed solution with an ammonium bicarbonate solution, adjusting a pH, and heating and stirring to allow a reaction to obtain a seed crystal solution; and S3: adding the mixed solution and an ammonium bicarbonate solution to the seed crystal solution, adjusting a pH, and heating and stirring to allow a reaction, during which a solid content in a slurry is controlled at 20% to 40% until a particle size in the slurry grows to a target value; and separating out, washing, and drying a solid phase to obtain the platy aluminum-doped cobalt carbonate.
The present disclosure discloses a preparation method of tungsten-doped cobalt tetraoxide and use thereof. The preparation method includes the following steps: dissolving a tungsten-containing compound and a molybdenum-containing compound in an alkali liquid to obtain a mixed solution; concurrently feeding the mixed solution, a cobalt salt solution, and a complexing agent into a base solution to allow a reaction to obtain a precipitate; roasting the precipitate in an oxygen-containing atmosphere to obtain a roasted material; and soaking the roasted material in a sodium sulfide solution to obtain the tungsten-doped cobalt tetraoxide. In the present disclosure, tungsten is doped, and tungsten has a large atomic radius, which stabilizes an internal structure of the material, expands the ion channel, and improves the cycling performance of the material; and molybdenum is removed through a soaking process, which provides atomic vacancies to further improve a 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
52.
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
57.
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
58.
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
59.
CATHODE MATERIAL PRECURSOR AND PREPARATION METHOD AND APPLICATION THEREOF
The invention relates to the field of battery materials, and discloses a cathode material precursor and a preparation method and application thereof. The chemical formula of the cathode material precursor is NixCoyMnz(OH)2, wherein 0.2≤x≤1, 0≤y≤0.5, 0≤z≤0.6, and 0.8≤x+y+z≤1. The cathode material precursor is in a shape of a stack of lamellae, and has a particle size broadening factor K, where K≤0.85. In the invention, the preparation process of the precursor is effectively controlled and adjusted by the controlled crystallization method combined with Lamer nucleation and growth theoretical model. The prepared precursor has morphology characteristics of concentrated particle size distribution and high proportion of {010} active crystal plane family, and has capacity retention up to 91.33% at a rate of 20C.
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
60.
COBALT-FREE NICKEL-MANGANESE CATHODE MATERIAL AND PREPARATION AND APPLICATION THEREOF
The invention relates to the technical field of battery materials and discloses a cobalt-free layered nickel-manganese cathode material and a preparation method and application thereof. The chemical formula of the cobalt-free layered nickel-manganese cathode material is LiaNixMnyMezO2@Mb, and Me is at least one selected from the group consisting of Zr, Al, W, Sr, Ti and Mg; M is at least one selected from the group consisting of Al2O3, CeO2, TiO2, Yb2O3, Nb2O5, La2O3, WO3, titanium sol, aluminum sol, titanium-aluminum sol, aluminum isopropoxide, butyl titanate, aluminum dihydrogen phosphate or lithium tungstate. The present invention achieves a shallow coating through high temperature calcination followed by metal oxide coating, which is beneficial to prevent the material from microcracks expansion caused by the material structure and internal stress change during the charging-discharging cycles.
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
61.
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
63.
Device for cutting connection of multi-piece module electrode
The present disclosure discloses a device for cutting connection of multi-piece module electrode which includes a stand, the stand is provided with a workbench and the workbench is connected with a height adjusting device. The device further includes an angle grinding device, the angle grinding device includes a polishing shaft and an angle grinder, the angle grinder is arranged on the polishing shaft, and the angle grinding device is provided with a saw blade. According to the characteristics of the module electrode, the angle grinding device is matched with the workbench to implement simultaneous electrode disconnecting operation of multiple electrodes of the module, so that the device not only has higher efficiency and better cutting effect, but also is suitable for universal saw blades, saves the cost, and is safer.
B24B 41/00 - MACHINES, DISPOSITIFS OU PROCÉDÉS POUR MEULER OU POUR POLIR; DRESSAGE OU REMISE EN ÉTAT DES SURFACES ABRASIVES; ALIMENTATION DES MACHINES EN MATÉRIAUX DE MEULAGE, DE POLISSAGE OU DE RODAGE Éléments constitutifs des machines ou dispositifs à meuler, tels que bâtis, bancs, chariots ou poupées
B24B 41/06 - Supports de pièces, p.ex. lunettes réglables
The invention belongs to the field of an electrolyte solution for a battery, and discloses a lithium-sulfur battery electrolyte and a preparation method and application thereof. The electrolyte solution comprises the following components: an organic solvent, an electrolyte and an additive; the organic solvent is 1,1,2, 2-tetrafluoroethyl 2,2,3,3-tetrafluoropropyl ether and 1,3-dioxolane; the electrolyte is bis(hexafluoroethane) sulfonamide lithium salt and LiCF3SO3; the additive is a lithium-sulfur compound, wherein the lithium-sulfur compound is Li6S2. The invention recovers an electrolyte solution from a lithium-sulfur battery, and then extracts the Li element in the electrolyte solution, which is recycled for preparation of a electrolyte solution of the lithium-sulfur battery; in addition, it can also enrich the organic components in the electrolyte solution of the waste lithium-sulfur battery, facilitating a centralized processing and reduction of leakage pollution.
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
66.
Regeneration Method of Waste Ternary Cathode Material and Application Thereof
The invention belongs to the technical field of battery material recycling and discloses a regeneration method of waste ternary cathode materials and application thereof. The regeneration method comprises the following steps: drying, crushing, and sieving a waste ternary cathode material to obtain a cathode powder; adding the cathode powder to a alkali liquid, reacting, stirring, washing, and filtering to obtain a filter residue; drying the filter residue, then mixing with carbonized pitch, and performing reducing calcination to obtain a mixture; after testing the content of nickel, cobalt, manganese, aluminum, and lithium in the mixture, adding a nickel source, a cobalt source, a lithium source, a manganese source, polyethylene glycol, ball milling with water to obtain a suspension; spray granulating the suspension to obtain a ternary precursor; subjecting the precursor to two-stage calcination to obtain a regenerated ternary cathode material.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
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
67.
PREPARATION METHOD FOR LITHIUM IRON PHOSPHATE CATHODE MATERIAL AND APPLICATION THEREOF
The present invention provides a preparation method and application of lithium iron phosphate cathode material, comprising the following steps: (1) Dry mixing an iron source, a phosphorus source, a lithium source, a carbon source and additives and fine grinding to obtain a mixed material; (2) Performing first calcination to the mixed material, and then pulverize to obtain the pulverized material; (3) Perform the second calcination to the pulverized material, while introducing a gasifiable organic carbon source, and then cooling to obtain a lithium iron phosphate cathode material. The invention uses high-efficiency mixing equipment for a one-step mixing and fine grinding of the raw materials, followed by the first calcination and pulverizing, and then performing a second calcination. The gasifiable organic carbon source is used to supplement carbon by forming a carbon coating, so that it has a better carbon coating layer and particle morphology.
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p.ex. phosphates, silicates ou borates
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 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/60 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés organiques
68.
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
71.
MIXING PROCESS FOR PREPARING HIGH NICKEL CATHODE MATERIAL AND APPLICATION THEREOF
The invention discloses a mixing process for preparing a high nickel cathode material and its use. The mixing process is to add a precursor and a lithium source to a mixing device for mixing to obtain a mixture. After the mixture is uniformly mixed, the mixture is mixed. While the material equipment continues to operate, spray the liquid into the mixture. After the liquid spray is completed, the material is discharged, and the obtained mixture is put into a sagger for sintering. The liquid is pure water, ethanol, nitrogen methyl pyrrolidone, and additive solution. Or one or more of additive dispersions. The spray mixing process of the present invention can make the mixture more uniform, and because of the presence of a proper amount of mist droplets, the surface of the lithium source is slightly soluble in water and can adsorb the precursor.
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
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 4/485 - 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
Disclosed are a silicon-doped graphene composite material and a preparation method and application thereof. The silicon-doped graphene composite material comprises silicon and graphene; the silicon is doped in the graphene. The silicon-doped graphene composite material of the present disclosure has excellent charge and discharge capacity and structural stability; the silicon-doped graphene composite material is based on the graphene structure, with silicon atoms replacing the carbon atoms in a two-dimensional network structure of the graphene. The silicon-doped graphene composite material of the present disclosure has a layered structure similar to graphite materials, but is superior to other graphene materials in charge and discharge capacity, which is due to the fact that lithium intercalation sites are constructed by the silicon doped sites.
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
74.
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"
76.
Method for preparing lithium nickle cobalt manganese oxide by reverse positioning of power battery and use thereof
Disclosed are a method for preparing lithium nickle cobalt manganese oxide by reverse positioning of a power battery and use thereof. The method first mixes and grinds a positive electrode tab and a slagging agent, then dries, cools, adds an aluminum powder, mixes well, conducts a self-propagating reaction to the mixed material, cools, takes a lower layer of rough nickel cobalt manganese alloy, grinds the rough nickel cobalt manganese alloy, adds an alkali liquor, then immerses, filters, takes the filter residue for washing and then dries, to obtain a nickel cobalt manganese alloy powder, adds a lithium salt solution to the porous nickel cobalt manganese alloy powder, mixes and drips an alkali liquor, ages, filters, takes a filter residue for washing and then dries, to obtain a mixed powder of precursor, sinters the mixed powder of precursor and cools, to obtain a lithium nickle cobalt manganese oxide.
Disclosed are a method for recovering lithium from lithium iron phosphate waste and application thereof. The method comprises the following steps: (1) adding water to lithium iron phosphate waste to obtain a lithium iron phosphate slurry (2) adding a soluble iron salt to the lithium iron phosphate slurry to perform a reaction, and filtering a resulting product to obtain an iron phosphate slag and a filtrate containing Li+ and Fe2+; (3) adding an oxidizing agent to the filtrate to perform a reaction and filtering a resulting product to obtain iron hydroxide and a filtrate containing Li+, Fe3+; (4) performing a multi-stage counter-current circulation leaching to the mixture of the filtrate and the lithium iron phosphate waste to obtain a lithium solution. The present disclosure adopts a soluble iron salt capable of accelerating the conversion of lithium iron phosphate.
C22B 7/00 - Mise en œuvre de matériaux autres que des minerais, p.ex. des rognures, pour produire des métaux non ferreux ou leurs composés
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
C22B 3/22 - Traitement ou purification de solutions, p.ex. de solutions obtenues par lixiviation par des procédés physiques, p.ex. par filtration, par des moyens magnétiques
78.
METHOD FOR REMOVING ELEMENTAL COPPER FROM TERNARY BATTERY WASTE AND APPLICATION THEREOF
Disclosed are a method for removing elemental copper from ternary battery waste and its application. The method comprises the following steps: crushing and screening the ternary battery waste to obtain a powder, and then removing iron by magnetic separation to obtain an iron-removed ternary waste; Adding an alkaline solution to the iron-removed ternary waste to perform an aluminum removal reaction, filtering to obtain a filter slag and aluminum-containing wastewater, washing the filter slag with water and drying to obtain a copper-nickel-cobalt-manganese material. Adding an iron salt solution to the copper-nickel-containing material to perform a leaching process, filtering to obtain a leachate and a nickel-cobalt-manganese waste; adding iron powder to the leachate and stirring to perform a reaction, filtering to obtain a copper residue, washing the copper residue with water and drying to obtain a copper-removed liquid and a sponge copper.
The present disclosure discloses a method for recycling lithium iron phosphate waste and its application. The method comprises the following steps: disassembling, crushing, and sieving the lithium iron phosphate waste to obtain a lithium iron phosphate powder; Diluting a ionic membrane liquid alkali, adding the lithium iron phosphate powder to the alkali, stirring under an oxidizing atmosphere in water bath to perform a reaction; filtering a resulting product to obtain a leachate and a lithium phosphate slag; drying the lithium phosphate slag, adding an ammonia aqueous solution to the slag to perform a reaction, filtering to obtain an ammonia aqueous solution containing lithium phosphate and a filter residue; the ammonia aqueous solution containing lithium phosphate is evaporated to obtain lithium phosphate. By adopting the present method of removing aluminum by alkaline leaching under an oxidizing atmosphere, the aluminum content in the obtained lithium iron phosphate slag is 0.08%.
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
81.
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.
The present disclosure provides a disassembly mechanism, a disassembly system of a power battery pack with the disassembly mechanism and a disassembly method of the power battery pack. The above disassembly mechanism includes a die base assembly, a pressing assembly and a removal tool assembly. The pressing assembly is movably connected to the die base assembly, and is used to abut against and press a single battery of a power battery pack. The removal tool assembly is slidably connected to the die base assembly and elastically connected to the die base assembly. The removal tool assembly is used to squeeze and separate a casing and the single battery of the power battery pack. The above disassembly mechanism can realize automatic disassembly of the power battery pack with few manual intervention, and solves the problem of low efficiency in the recycling and disassembly process of the power battery pack.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
B09B 3/80 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant une étape d'extraction
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
84.
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
85.
METHOD FOR RECOVERING AND PURIFYING NICKEL FROM FERRONICKEL
The present disclosure discloses a method for recovering and purifying nickel from ferronickel, comprising the following steps: (1) mixing ferronickel with hydrochloric acid, and heating for dissolution; subjecting a resulting slurry to solid-liquid separation to obtain a liquid phase; and adding an oxidant to the liquid phase to obtain a hydrochloric acid-leaching liquor; (2) subjecting the hydrochloric acid-leaching liquor to evaporation, and adding a precipitating agent to allow a reaction; separating out a liquid phase, adding ammonia water to adjust a pH, and adding a water-soluable alcohol solution; and cooling for precipitation to obtain a nickel complex crystal; and (3) dissolving the nickel complex crystal, and adding an oxidant; and subjecting a resulting mixture to a light treatment, and adjusting a pH with an acid to obtain a nickel chloride solution.
A method for recycling a lithium battery cathode material. Residual aluminum on the positive electrode sheet is dissolved by a sodium hydroxide solution, and lithium in the cathode material enters the solution during the dissolution of aluminum, such that an ionic potential is vacated on the cathode material; a residue is washed to avoid sodium ion contamination, then dried, and allowed to react with metallic lithium and lithium sulfide under heating, such that crystal lattices of the material change; a product after first-stage lithium supplementation is directly sintered with a lithium source in an oxygen atmosphere to obtain monocrystalline ternary cathode material agglomerates, where a sintering method and a sintering temperature are controlled; and the agglomerates are crushed, then washed to remove residual lithium on the surface, and dried to obtain a monocrystalline ternary cathode material, which has the performance close to that of the initially synthesized monocrystalline cathode material.
The present disclosure discloses a recycling method for a mixed waste material of lithium nickel manganese cobalt oxide (LNMCO) and lithium iron phosphate (LFP), including: conducting acid-leaching to obtain an acid-leaching liquor with nickel, cobalt, manganese, phosphorus, iron, and lithium; conducting adsorption separation with a resin, washing the resin with sulfuric acid to obtain a mixed solution of nickel sulfate, cobalt sulfate, and manganese sulfate, and subjecting the mixed solution to precipitation to obtain an LNMCO cathode material precursor; and subjecting an obtained solution with phosphorus, iron, and lithium to lithium precipitation to obtain a lithium salt precipitate, and subjecting a post-precipitation solution to concentration and electrospinning to obtain a ferric phosphate/carbon material. The process of the present disclosure can achieve comprehensive recycling of a mixed waste material of LNMCO and LFP and the directed circulation of waste LNMCO and LFP materials.
The present disclosure belongs to the technical field of lithium battery recycling, and discloses a method for separating and recovering valuable metals from waste ternary lithium batteries. The method includes the following steps: adding a persulfate to a waste ternary lithium battery powder, and conducting oxidative acid leaching to obtain a leaching liquor and a leaching residue; adding an alkali to the leaching liquor to allow a precipitation reaction; adding a sulfide salt to allow a reaction; adjusting a pH to allow a precipitation reaction to obtain a nickel hydroxide precipitate and a liquid phase A; adding a carbonate to the liquid phase A to allow a reaction, and conducting solid-liquid separation (SLS) to obtain lithium carbonate; and subjecting the leaching residue to calcination, adding a chlorate, heating a resulting mixture, and conducting SLS to obtain manganese dioxide.
C22B 7/00 - Mise en œuvre de matériaux autres que des minerais, p.ex. des rognures, pour produire des métaux non ferreux ou leurs composés
C22B 3/22 - Traitement ou purification de solutions, p.ex. de solutions obtenues par lixiviation par des procédés physiques, p.ex. par filtration, par des moyens magnétiques
C22B 3/42 - Traitement ou purification de solutions, p.ex. de solutions obtenues par lixiviation par extraction utilisant l'échange d'ions
C22B 3/00 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés
The invention belongs to the technical field of lithium ion battery cathode materials, and discloses a preparation method and application of nanosized lithium cobalt oxide cathode materials, comprising the following steps: mixing the carbonate solution with a dispersant, adding a cobalt salt solution to react, then aging, filtering, drying the filter residue to obtain a nano-CoCO3 powder, and then calcinating it to obtain a Co3O4 precursor; mixing the Co3O4 precursor with a lithium salt, and then sintering, cooling, pulverizing and sieving to obtain the nanosized lithium cobalt oxide cathode material. The main advantages of the present invention are that the nano-CoCO3 synthesis process is simple and easy to control, the process is short, no special temperature control is required, the pH value and other conditions are not required to be precisely controlled during the reaction process, and it is suitable for large-scale industrial production.
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
90.
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
Disclosed are an aluminum-based lithium ion-sieve (LIS), and a preparation method and use thereof. The aluminum-based LIS is Li2SO4·2Al(OH)3·nH2O coated with Al(OH)3, where n is 1 to 4. The preparation method includes: reacting an aluminum salt and a lithium salt with an alkali to obtain an adsorbent intermediate LiOH·2Al(OH)3·nH2O; using a dilute sulfuric acid to obtain an aluminum-based lithium adsorbent Li2SO4·2Al(OH)3·nH2O; and filtering out and washing the adsorbent, mixing the adsorbent with a metaaluminate, and adjusting a pH to obtain the Li2SO4·2Al(OH)3·nH2O coated with Al(OH)3. The aluminum-based LIS of the present disclosure has the advantages of high adsorption capacity and prominent stability, and can be used to efficiently recover low-concentration lithium in industrial wastewater. Moreover, the LIS is coated with aluminum hydroxide, which can effectively protect the structure from being corroded.
B01J 20/04 - 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 des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01J 20/08 - 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 des oxydes ou des hydroxydes des métaux non prévus dans le groupe contenant de la bauxite
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
92.
WET PROCESS FOR RECOVERING VALUABLE METALS FROM LITHIUM BATTERY
The present disclosure discloses a wet process for recovering valuable metals from a lithium battery. In the method, a waste lithium battery powder is subjected to selective leaching under the condition that a hydrogen sulfide gas is introduced through pressurization, such that Mn2+, Li+, and Al3+ metal ions enter a first-stage leaching liquor and nickel, cobalt, copper, and iron exist in a first-stage leaching residue in the form of a sulfide; then a pH of the first-stage leaching liquor is adjusted to remove aluminum and manganese, which achieves extremely thorough metal separation and leads to relatively pure products; a first-stage leaching residue is subjected to leaching in an acid liquor under a negative pressure, such that the sulfides of nickel, cobalt, iron, and copper are dissolved in a second-stage leaching liquor, and a hydrogen sulfide gas produced can be recycled in the first-stage leaching procedure through pressurization.
C22B 3/00 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés
C22B 3/22 - Traitement ou purification de solutions, p.ex. de solutions obtenues par lixiviation par des procédés physiques, p.ex. par filtration, par des moyens magnétiques
This disclosure discloses a method for recovering lithium from a waste LFP material, including: S1. adding water to the waste LFP material, controlling a pH thereof at 0.5 to 2.0 and an ORP of the slurry at 0.05 V to 1.2 V, and filtering to obtain a material A; S2. adding sulfuric acid and heating a resulting mixture at 100° C. to 400° C. in the air or an oxygen atmosphere to obtain a material B; S3. adding water to the material B, and stirring and filtering to obtain a material C; S4. controlling a pH of the material C at 9 to 11, and filtering a resulting mixture to obtain a material D; S5. passing the material D through an ion-exchange resin to obtain a material E; and S6. adding the material E to a sodium carbonate solution to react; and collecting a resulting solid to obtain lithium carbonate.
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 are a sagger for sintering lithium composite transition metal oxide and a preparation method thereof. The sagger includes a substrate layer and a shallow layer on a surface of the substrate layer, and a coating layer. The substrate layer is prepared from the following raw materials: silicon carbide, magnesia-alumina spinel, aluminum oxide-magnesium oxide-yttrium oxide composite fiber, zircon powder and a binding agent; the shallow layer is prepared from the following raw materials: silicon carbide, magnesia-alumina spinel, aluminum oxide-titanium oxide composite fiber, yttrium oxide-zirconium oxide composite fiber and a binding agent; and the coating layer is prepared from the following raw materials: silicon carbide, magnesia-alumina spinel, magnesium oxide, zirconium oxide fiber, lithium composite transition metal oxide powder and a binding agent. The sagger of the present disclosure has properties of good corrosion resistance and a small coefficient of thermal expansion.
Disclosed are a preparation method and application of iron phosphate. The preparation method comprises: subjecting iron phosphate waste to calcination, dissolving it in an acid solution, and filtering to obtain filtrate, namely a solution A containing iron phosphorus; stirring a mixed solution of the solution A and a first alkali solution, adjusting pH of the mixed solution to acidity for reaction, and after washing and filtering to obtain second filter residue, namely an amorphous yellow iron phosphate filter cake; subjecting the yellow iron phosphate filter cake to aging and heating, adding phosphoric acid and a second alkali solution for reaction, followed by washing and filtering to obtain third filter residue, namely a basic ammonium iron phosphate filter cake, then drying to obtain basic ammonium iron phosphate crystal powder; and subjecting the basic ammonium iron phosphate crystal powder to calcination for dehydration and cooling to obtain iron phosphate.
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
100.
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
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