53 results about "Lithium hydroxide monohydrate" patented technology

This invention provides a method for preparing a positive electrode lithium supplement, comprising the following steps: Step S1: Mixing and grinding lithium nitrate and lithium hydroxide monohydrate; Step S2: Melting the material after mixing and grinding in Step S1 to obtain a mixed lithium salt of lithium nitrate and lithium hydroxide; Step S3: Mixing the mixed lithium salt with an iron source and glucose, and then pressing it into tablets; Step S4: Calcining the material after tableting in Step S3 under inert gas protection; Step S5: Cooling and sieving the calcined material after Step S4 to obtain the positive electrode lithium supplement Li5FeO4. The method of this invention for preparing Li5FeO4 has excellent properties such as small particle size, low energy consumption, short sintering time, low cost, and low calcination temperature.

A process for producing lithium hydroxide monohydrate from lithium chloride, the process comprising: (a) adding an aqueous potassium ion and hydroxide ion-containing solution to an aqueous lithium chloride-containing solution, thereby obtaining a mixture comprising lithium hydroxide, potassium chloride and water, (b) selectively precipitating potassium chloride from the mixture, thereby obtaining potassium chloride precipitate and a first mother liquor solution, (c) separating the potassium chloride precipitate from the first mother liquor solution, (d) processing the potassium chloride precipitate to obtain an aqueous potassium hydroxide-containing solution, (e) adding the aqueous potassium hydroxide-containing solution to the separated first mother liquor solution, thereby obtaining a potassium hydroxide-enriched first mother liquor solution, and (f) selectively precipitating lithium hydroxide monohydrate from the potassium hydroxide-enriched first mother liquor solution, thereby obtaining lithium hydroxide monohydrate precipitate and a second mother liquor solution.

This invention belongs to the field of battery materials technology, specifically relating to a one-step continuous dehydration and sulfidation method for preparing lithium sulfide from lithium hydroxide monohydrate. This invention uses LiOH·H₂O as the lithium source for preparing lithium sulfide, significantly reducing costs. The dehydration and sulfidation steps are completed continuously and uninterruptedly within the same reaction vessel, using the same batch of materials, through program control. There are no intermediate material transfer, separation, or intermediate processing steps, avoiding exposure to air for moisture absorption, oxidation, and the introduction of impurities, thus ensuring high product purity.

The invention belongs to the technical field of lithium salt preparation, and provides a method for preparing battery-grade lithium hydroxide monohydrate by causticizing lithium carbonate. According to the method, raw material washing and ion exchange purification are combined with a multi-stage crystallization impurity removal process including evaporation concentration, rotational flow classification and elutriation to achieve a synergistic effect, so that the impurity content of the product is effectively controlled, and a lithium carbonate component causing scaling is actively removed; therefore, the scaling problem of evaporative crystallization equipment is remarkably relieved while the product purity is improved, and the lithium hydroxide monohydrate meeting the battery-grade quality requirement is stably and continuously produced by taking the industrial-grade lithium carbonate as the raw material.

The invention discloses a method for reducing magnetic foreign matters by a tubular vibratory feeding conveyor for producing lithium hydroxide monohydrate, and aims to solve the problems of deliquescence dust pollution, material adhesion and blockage and the like caused by easy introduction of magnetic foreign matters, insufficient sealing and the like of existing lithium hydroxide monohydrate conveying equipment. By constructing a totally-closed conveying system of a de-ironing separator surge bin, an electromagnetic de-ironing separator, a tubular vibrating feeding conveyor and a small packing machine bin and combining with an ultra-high molecular weight polyethylene lining arranged in a key component, the problems of deliquescence, carbonization, pollution and the like of lithium hydroxide monohydrate are effectively solved, the harsh requirements of battery-grade (the purity is greater than or equal to 99.5%) products are met, and the product quality is improved. Meanwhile, magnetic foreign matter control and conveying stability are achieved.

The invention provides a lithium carbonate lithium supplement agent as well as a preparation method and application thereof, and relates to the technical field of secondary batteries. The preparation method of the lithium carbonate lithium supplementing agent comprises the following step: enabling ethyl carbamate and lithium hydroxide monohydrate to react in water to obtain the lithium carbonate lithium supplementing agent. The prepared lithium carbonate lithium supplement agent is lithium carbonate with a three-dimensional porous skeleton structure, and the lithium carbonate is lower in decomposition voltage compared with existing commercially-purchased lithium carbonate, and can be directly used as the lithium supplement agent in the preparation of a lithium ion battery without being compounded with other metals. The preparation method of the lithium carbonate lithium supplement agent is easy and convenient to operate, reaction products are convenient to post-treat, operability is high, a high-performance lithium supplement agent material can be efficiently obtained, and the preparation method is suitable for large-scale production of lithium ion batteries.

A method for producing battery-grade lithium hydroxide monohydrate with low carbonate content from impure lithium feedstock, the method comprising: forming a concentrated lithium hydroxide solution saturated or nearly saturated with lithium hydroxide monohydrate; removing at least some lithium carbonate from the solution; crystallizing the lithium hydroxide monohydrate; and separating the crystallized lithium hydroxide monohydrate from the solution.

The present invention relates to the recovery of lithium from solid resources with minimized energy consumption, for example for commercial products such as lithium hydroxide monohydrate, lithium carbonate or low sodium lithium carbonate.

A process for producing high purity lithium hydroxide monohydrate from a material containing a lithium salt selected from Li2SO4, LiCl, Li2CO3 or mixtures thereof, comprising membrane electrolysis of an aqueous solution of said lithium salt using a cation exchange membrane and nickel-plated stainless steel. The catholyte is drawn from the circulation stream and evaporated to obtain lithium hydroxide monohydrate crystals which are separated from the mother liquor, washed with water and dried to obtain the final high purity lithium hydroxide monohydrate. Part of the used wash liquor is fed to the catholyte evaporation process. Part of the mother liquor formed after separation of the lithium hydroxide monohydrate crystals is returned to the catholyte evaporation process. The reverse flow of the anolyte is replenished with a concentrated lithium salt solution prepared from the original lithium salt. Part of the used catholyte drawn from the evaporation process is directed to Li2CO3 production.

The invention relates to a preparation method of high-purity lithium carbonate, in particular to a method for preparing high-purity lithium carbonate in ethanol by taking a mixture of urea and carbon dioxide as a carbon source and lithium hydroxide or lithium hydroxide monohydrate as a lithium source, and belongs to the technical field of chemical synthesis. The method comprises the following steps: firstly, adding a proper amount of lithium hydroxide or lithium hydroxide monohydrate into a reaction kettle, then adding a certain amount of urea into the reaction kettle, then adding a proper amount of ethanol into the reaction kettle, and stirring the mixture to fully dissolve solids to obtain a lithium hydroxide solution with the mass percent concentration of 0.1-12%; and introducing carbon dioxide, stirring at the constant temperature of 100-130 DEG C for 2-8 hours, separating a solid phase and a liquid phase after the reaction is finished, and drying the separated solid to obtain high-purity lithium carbonate powder. Therefore, the method disclosed by the invention is safe and environment-friendly, is simple and convenient to operate, and can be used for efficiently preparing high-purity lithium carbonate at low cost.

The application discloses a preparation method of a lithium iron phosphate battery, and comprises the following steps: step one, mixing lithium hydroxide monohydrate, iron phosphate and glucose, and then manually wet grinding the mixture in a agate mortar, and drying the mixture after grinding to obtain a mixed powder; step two, placing the mixed powder into a tube furnace, and performing high-temperature solid-phase synthesis under an argon atmosphere to obtain lithium iron phosphate, and then grinding and sieving the lithium iron phosphate to obtain lithium iron phosphate powder; and step three, stirring and mixing the lithium iron phosphate powder, a conductive agent, a binder and N-methyl pyrrolidone, then coating the mixture on an aluminum foil, cutting the mixture after drying to obtain a positive electrode sheet, and then assembling the positive electrode sheet into a battery in a glove box. The material synthesized by the application has high specific discharge capacity, small charge transfer resistance, strong lithium ion transmission capacity, better reaction kinetics and chemical reversibility of the electrode, maximum peak current and large electric capacity.

The present invention relates to the field of chemical engineering, and more particularly to methods and devices for obtaining lithium hydroxide from brines by bipolar electrodialysis. The present method utilizes energy-efficient purification and electrochemical conversion techniques in the processing of mineral brines. The proposed method and plant for the implementation thereof make it possible to obtain high-purity lithium hydroxide monohydrate from natural calcium chloride-type brines, inter alia in the form of produced water that is a byproduct of the oil production process.

The present application relates to the technical field of high polymer antibacterial health protection materials, in particular to a preparation method of a universal copper-based nanometer material, wherein copper hydroxide precipitate is obtained by adding sodium hydroxide solution into copper chloride water solution step by step, and then copper oxide nanoparticles are obtained by drying and grinding; copper nitrate trihydrate, lithium hydroxide monohydrate and water are mixed and then hydrothermally dispersed to obtain copper hydroxide nanowires; copper chloride dihydrate, lithium hydroxide monohydrate and water are mixed to obtain copper oxide nanosheet; finally, copper oxide nanoparticles, copper hydroxide nanowires and copper oxide nanosheet are dispersed and mixed to obtain a copper-based nanometer compound. The present application is a new type of copper-based nanometer antibacterial material with regular prism / rod microstructure, high dispersibility, strong base material compatibility, high temperature resistance and excellent durability. The material can be truly embedded in different base materials instead of only staying on the surface, and can be universally applied in various material systems such as silica gel, latex and yarn.

An improved manufacturing process for lithium hydroxide monohydrate suitable for battery applications is provided. Preferably, potassium hydroxide (KOH) is added to an aqueous solution of lithium sulfate (Li₂SO₄), and the resulting aqueous solution is adjusted to a temperature in the range of 0 to 25°C. After quantitative removal of the K₂SO₄, LiOH can be crystallized in high yield and purity.

A process for producing lithium hydroxide monohydrate from lithium chloride, the process comprising: (a) adding an aqueous solution comprising sodium hydroxide to a first aqueous solution comprising lithium chloride, thereby obtaining a mixture comprising lithium hydroxide, sodium chloride and water; (b) cooling the mixture to selectively precipitate lithium hydroxide monohydrate; (c) separating the lithium hydroxide monohydrate precipitate from the first mother liquor; (d) adding a second aqueous solution containing lithium chloride into the separated first mother solution to obtain a first mother solution enriched with lithium chloride; and (e) removing (preferably evaporating) moisture from the lithium chloride enriched first mother liquor to selectively precipitate sodium chloride.

The application relates to the technical field of drug delivery, and particularly discloses a novel long-chain compound for small nucleic acid drug delivery and a synthesis method and application thereof. The synthesis method of the novel long-chain compound for small nucleic acid drug delivery comprises the following steps: reacting tris(hydroxymethyl)aminomethane and acrylonitrile, then reacting with sulfuric acid to obtain compound 3; first, reacting compound 3 and Boc anhydride, then reacting with lithium hydroxide monohydrate, then reacting with 2,3,5,6-tetrafluorophenol, and finally, reacting with tert-butyl (2-(2-(2-(2-aminoethoxy)ethoxy)ethoxy)ethyl)carbamate to obtain compound 7; and reacting compound 7 with (1R,8S,9s)-bicyclo[6.1.0]non-4-yn-9-ylmethyl succinimidyl carbonate to obtain a target product. The novel long-chain compound for small nucleic acid drug delivery can be flexibly connected with multiple drug molecules, targeting ligands or functional modules to optimize delivery efficiency, pharmacokinetics and targeting property, and enriches the selectivity of a small nucleic acid drug delivery system.

Provided are: a zigzag LiMnO2 type compound which can be produced on an industrial scale; and / or a method for producing same.　Provided is a method for producing a lithium composite oxide which is represented by the compositional formula LixMnO2 (0.80≤x≤1.20), which has a zigzag layer structure as a basic structure, and which has a domain having an α-NaFeO2 type layered structure. The method is characterized by having a step for heating a composition containing a manganese source that is dimanganese trioxide and / or manganese oxyhydroxide and one or more lithium sources selected from the group consisting of lithium carbonate, anhydrous lithium hydroxide and lithium hydroxide monohydrate in an inert gas atmosphere to an attainment temperature of 600-750ºC, and maintaining the attainment temperature for a period of 6 hours or less.

A process for producing high purity lithium hydroxide monohydrate from a material containing lithium salts selected from Li2SO4, LiCl, Li2CO3 or mixtures thereof, comprising membrane electrolysis of a specified aqueous lithium salt solution using a cation exchange membrane and a nickel-plated stainless steel cathode. Catholyte is withdrawn from the circulation stream, evaporated to obtain lithium hydroxide monohydrate crystals, which are separated from the mother liquor, washed with water and dried to obtain the final high purity lithium hydroxide monohydrate. A portion of the spent washing solution is fed to the catholyte evaporation process. A portion of the mother liquor formed after separation of the lithium hydroxide monohydrate crystals is returned to the catholyte evaporation process. The counterflowing anolyte is replenished with a concentrated lithium salt solution prepared from the original lithium salt. A portion of the spent catholyte withdrawn from the evaporation process is directed to the production of Li2CO3.

The invention relates to the field of lithium battery material preparation, and discloses a continuous industrial preparation method of battery-grade lithium dihydrogen phosphate, which comprises the following steps: carrying out continuous graded mixing reaction on a crude product lithium hydroxide monohydrate and phosphoric acid with specific mass concentration through a plurality of neutralization tanks to prepare a lithium dihydrogen phosphate solution with required pH and Li2O concentration; evaporating and concentrating the lithium dihydrogen phosphate solution, cooling and thickening, discharging, performing flash evaporation crystallization, and performing centrifugal separation to obtain a lithium dihydrogen phosphate wet product; drying the wet lithium dihydrogen phosphate product to obtain a battery-grade lithium dihydrogen phosphate product; the high-impurity lithium dihydrogen phosphate mother liquor obtained after multiple times of circulating evaporation reacts with the discharged crude lithium hydroxide evaporation mother liquor to generate lithium phosphate for recycling lithium resources, and lithium phosphate can be directly used as a raw material for synthesizing lithium dihydrogen phosphate. The method is a highly automatic and continuous industrial production method for producing the product, controls the quality of the crude product lithium hydroxide monohydrate raw material and co-treats the discharged mother liquor, improves the lithium yield, effectively utilizes redundant acid, alkali and phosphorus in the system, and reduces waste and environmental protection pressure.

The application discloses a motor lubricating grease composition, which comprises a thickening agent, base oil and an additive, and specifically, the thickening agent is 10-15%, the base oil is 85-90%, and the sum of the mass percentages of the two is 100%; the additive is additionally added in a proportion of 1-5%; the thickening agent is composed of mixture A and mixture B; a) the mixture A is a reactant of dodecahydroxy stearic acid, organic dibasic acid and saturated aqueous solution of lithium hydroxide monohydrate, and the molar ratio of the dodecahydroxy stearic acid to the organic dibasic acid is 1:0.1-1; b) the mixture B is an amide compound, and the amide compound is a mixture of one or more of dodecanamide, hexadecanamide, octadecanamide, octadecenoic acid amide, docosanamide, docosenoic acid amide, N,N-dimethyl dodecanamide and N,N'-ethylene bis-stearamide in an arbitrary ratio. The application can effectively prolong the service life of the lubricating grease, prolong the grease replenishing period and prolong the service life of the motor.

The invention discloses a battery-grade lithium hydroxide monohydrate production method based on combined efficient calcium removal, which comprises the following steps: carrying out roasting, ball milling, acidification, leaching and plate-frame pressure filtration on spodumene to obtain a lithium sulfate solution, and further alkalifying and removing impurities, namely adding liquid caustic soda and a Na2CO3 solution into the lithium sulfate solution subjected to pressure filtration to carry out purification and impurity removal; calcium hydroxide and calcium carbonate precipitates are formed; sequentially carrying out filtering separation, MVR concentration and secondary filtering separation to ensure that the calcium ion concentration of the concentrated lithium sulfate solution is controlled to be less than 20ppm; adding a sodium hydroxide solution into the clear liquid treated by the plate-and-frame filter press, and mixing to obtain a lithium hydroxide solution and a sodium sulfate solution; and carrying out plate-and-frame pressure filtration and fine filtration, freezing to separate out sodium, carrying out fine filtration, carrying out crude product MVR concentration, re-dissolving, and carrying out secondary plate-and-frame pressure filtration and fine filtration. The method has the advantages that calcium is deeply removed, the quality of the battery-grade lithium hydroxide product is guaranteed, the production efficiency is improved, the cost is reduced, the technological process is simplified, and high efficiency and environment friendliness are achieved.

The invention provides a process method of micro-powder battery grade lithium hydroxide monohydrate and a preparation device of the micro-powder battery grade lithium hydroxide monohydrate. The process method of the micro-powder battery-grade lithium hydroxide monohydrate comprises the following steps: S1, roasting lepidolite and sulfate according to a mass ratio of 1.3-2.5: 1 at 800-1200 DEG C for 0.5-2 hours, cooling to room temperature to obtain roasted clinker, and carrying out ball-milling leaching on the roasted clinker and water according to a ratio of 2-0.5: 1 to obtain slurry of a lithium sulfate solution. According to the process method and the preparation device of the micro-powder battery grade lithium hydroxide monohydrate provided by the invention, the process step of obtaining the lithium hydroxide monohydrate from the lepidolite ore is reduced, and meanwhile, other lithium salt processes such as lithium carbonate precipitation and the like do not need to be carried out in the middle to convert the lithium hydroxide into lithium hydroxide; the lithium hydroxide monohydrate preparation process is simplified, the production cost is reduced, the product quality stability is improved, and the product yield is improved.

The invention relates to an improved method for preparing lithium hydroxide monohydrate suitable for battery applications. Potassium hydroxide, KOH, is preferably added to an aqueous solution of lithium sulphate, Li2SO4, and the aqueous solution obtained is adjusted to a temperature in a range from 0 to 25°C. After quantitative separation of K2SO4, LiOH can be crystallised out at high yield and purity.

The application belongs to the technical field of electrode materials, and discloses an in-situ preparation method of a lithium iron phosphate-lithium-rich manganese-based dual-phase electrode material, which utilizes melamine, formaldehyde, ammonium polyphosphate and a mixture to prepare in-situ polymerization double-layer coated modified ammonium polyphosphate; after lithium hydroxide monohydrate is dissolved, glacial acetic acid and an aqueous solution of the in-situ polymerization double-layer coated modified ammonium polyphosphate are added and uniformly mixed to obtain a lithium acetate and ammonium polyphosphate mixed suspension; nano lithium-rich manganese-based compound powder and an organic carbon source are sequentially added to the mixed suspension of lithium acetate and ammonium polyphosphate to obtain organic carbon source coated lithium iron phosphate-lithium-rich manganese-based dual-phase precursor powder, and the powder is calcined; after inorganic carbon source and the obtained calcined product are uniformly mixed, a binder is added, and drying and pressing are performed to obtain the lithium iron phosphate-lithium-rich manganese-based dual-phase electrode material. The preparation method is simple, low in cost, high in efficiency, and the prepared lithium iron phosphate-lithium-rich manganese-based dual-phase electrode material has good water resistance.

The application discloses a pure-phase lithium titanium phosphate electrolyte and a preparation method thereof, and the preparation method comprises the following steps: wet ball milling lithium hydroxide monohydrate, titanium oxide, an ammonium phosphate salt, aluminum oxide and a polyhydric alcohol retarder to obtain mixed raw materials; performing drying treatment on the mixed raw materials, screening the mixed raw materials, and performing calcination treatment on the screened mixed raw materials under the condition of 800-1000 DEG C to obtain the pure-phase lithium titanium phosphate electrolyte. By adding the polyhydric alcohol retarder into traditional raw materials for preparing the LATP solid-state electrolyte, the polyhydric alcohol retarder can generate a compound protective film or a complex with the raw materials, hinders the reaction between metal ions and phosphate, delays the hydration reaction, and makes the sintering product very fluffy, so that the operation difficulty is greatly reduced. Therefore, the method can greatly reduce the engineering operation difficulty under the premise of ensuring high purity of the lithium titanium phosphate electrolyte, improves the production efficiency, and is favorable for large-scale industrial production.

The invention relates to the technical field of lithium batteries, in particular to a novel hydrothermal synthesis process of a lithium iron manganese phosphate positive electrode material. The method comprises the following steps: selecting lithium hydroxide monohydrate, phosphoric acid, ferrous sulfate heptahydrate and manganese sulfate monohydrate as raw materials, and weighing according to a preset molar ratio of Fe to Mn; mixing in water in a stirring state to form a lithium iron manganese phosphate positive electrode material precursor solution; carrying out hydrothermal reaction on the precursor solution by utilizing a microwave heating technology; mixing the lithium manganese iron phosphate positive electrode material primary particles with a composite carbon source and a binder to prepare slurry with certain viscosity; and carrying out drying, screening and post-treatment on the lithium manganese iron phosphate positive electrode material subjected to spray cracking, and carrying out electrochemical performance test. According to the invention, efficient synthesis and performance optimization of the lithium iron manganese phosphate positive electrode material are realized.

The lithium recovery method according to the present invention is characterized by comprising: a step for preparing an aqueous lithium sulfate solution; obtaining a lithium hydroxide aqueous solution from the lithium sulfate aqueous solution through a lithium sulfate-lithium hydroxide conversion process; a step of obtaining crystallized lithium hydroxide monohydrate and crystallized filtrate from the lithium hydroxide aqueous solution through a crystallization process; and a step of carbonating the crystallized filtrate to obtain lithium carbonate, wherein in the step of obtaining the lithium hydroxide aqueous solution from the lithium sulfate aqueous solution, when the lithium hydroxide aqueous solution meets formulas 1 and 2, the method further comprises a step of adding sodium hydroxide into the lithium hydroxide aqueous solution.

The application provides a process method and a preparation device of fine powder battery-grade monohydrate lithium hydroxide. The process method of the fine powder battery-grade monohydrate lithium hydroxide comprises the following steps: S1, lithium mica and sulfate are calcined and transformed at a mass ratio of 1.3-2.5:1, a temperature of 800-1200 degrees, and for 0.5-2 hours, and then cooled to room temperature to obtain calcined clinker; the calcined clinker and water are ball milled and leached at a ratio of 2-0.5:1 to obtain a slurry of lithium sulfate solution. The process method and the preparation device of the fine powder battery-grade monohydrate lithium hydroxide provided by the application reduce the process steps of obtaining monohydrate lithium hydroxide from lithium mica ore, and the intermediate does not need to pass through the process of other lithium salts such as lithium carbonate deposition to be converted into lithium hydroxide again; the preparation process of the monohydrate lithium hydroxide is simplified, the production cost is reduced, the product quality is stabilized, and the product yield is improved.

The present application belongs to the technical field of lithium ore recycling, and particularly relates to a method for comprehensive utilization of lepidolite, comprising the following steps: (1) leaching the lepidolite ore powder with acid to obtain a leaching solution by filtration; (2) treating the leaching solution by nanofiltration to obtain high-pressure nanofiltration concentrated water, and performing electrodialysis on the high-pressure nanofiltration concentrated water to obtain an electrodialysis alkali liquor; (3) evaporating and concentrating the electrodialysis alkali liquor, cooling and crystallizing, and filtering to obtain lithium hydroxide monohydrate crystals and a crystallization mother liquor, introducing carbon dioxide into the crystallization mother liquor, and filtering to obtain lithium carbonate and a lithium precipitation mother liquor; (4) performing extraction on the lithium precipitation mother liquor to separate and obtain a loaded organic phase, washing the loaded organic phase with a stripping acid to obtain a stripping liquor, evaporating and crystallizing the stripping liquor to produce rubidium salt and cesium salt; (5) adjusting the pH of the metal cation concentrated water liquid generated in the nanofiltration treatment to 6.0-7.0, filtering to obtain potassium fluosilicate and a filtrate, continuously adjusting the pH of the filtrate to alkaline, and filtering to obtain aluminum hydroxide and an aluminum precipitation mother liquor.

The application relates to the technical field of energy storage and conversion materials, and particularly relates to a preparation method of a sodium-based double-ion battery composite positive electrode material with super-high rate capability, which comprises the following steps: S1: taking tetrabutyl titanate as a Ti source, uniformly mixing the tetrabutyl titanate with graphite powder, and placing the mixture in anhydrous ethanol to obtain a solid-liquid mixture; S2: continuously stirring the solid-liquid mixture in a water bath pot magnetic stirrer until the anhydrous ethanol is completely evaporated to obtain a sample; S3: uniformly mixing the sample with a certain proportion of a lithium source (one of lithium hydroxide monohydrate, lithium acetate, lithium carbonate or lithium oxalate) to obtain a mixed sample; and S4: heating and keeping warm of the sample under an inert protective atmosphere to obtain a sodium-based graphite double-ion battery composite positive electrode material coated with Li2TiO3. The sodium-based graphite double-ion battery composite positive electrode material coated with Li2TiO3 provided by the application has excellent rate capability, can realize stable cycle of 100C super-high rate charging and discharging, and specifically can realize 86% of fast charging and discharging capacity in 36s.