Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Lithium-rich manganese-based material and application method thereof

A lithium-rich manganese-based, positive electrode material technology, applied in chemical instruments and methods, inorganic chemistry, nickel compounds, etc., can solve the problems of high manufacturing cost, short cycle life at high temperature, unstable performance of lithium batteries, etc., and achieve low manufacturing cost , stable performance, and the effect of overcoming poor high temperature characteristics

Pending Publication Date: 2021-11-30
安徽博石高科新材料股份有限公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a lithium-rich manganese-based material and its application method to solve the problems of unstable lithium battery performance, short high-temperature cycle life, and high manufacturing cost proposed in the above-mentioned background technology

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Lithium-rich manganese-based material and application method thereof
  • Lithium-rich manganese-based material and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A lithium-rich manganese-based material, specifically comprising the following steps:

[0031] S1. material preparation: by weight, prepare some sulfates of nickel, manganese, cobalt, 50 parts of hydrochloric acid solution, 60 parts of ammoniacal liquor, 40 parts of sodium hydroxide solution;

[0032] S2. Dissolution: Take 50 parts of the hydrochloric acid solution in S1, dissolve the sulfates of nickel, manganese, and cobalt in the hydrochloric acid solution at a molar ratio of 0.35:0.6:0.05, and slowly add hydroxide Sodium solution, after the precipitation is generated, continue to add sodium hydroxide solution until the precipitate no longer increases, forming a solid-liquid mixture, preventing the waste of raw materials caused by adding too much sodium hydroxide solution;

[0033] S3. Adjust PH: slowly add ammonia water to the solid-liquid mixture in S2, and stir until the PH of the solid-liquid mixture is 8;

[0034] S4. Filtration: filter the solid-liquid mixture...

Embodiment 2

[0051] A lithium-rich manganese-based material, specifically comprising the following steps:

[0052] S1. material preparation: by weight, prepare some sulfates of nickel, manganese, cobalt, 50 parts of hydrochloric acid solution, 60 parts of ammoniacal liquor, 40 parts of sodium hydroxide solution;

[0053] S2. Dissolution: Take 50 parts of the hydrochloric acid solution in S1, dissolve the sulfates of nickel, manganese, and cobalt in the hydrochloric acid solution at a molar ratio of 0.35:0.6:0.05, and slowly add hydroxide Sodium solution, after the precipitation is generated, continue to add sodium hydroxide solution until the precipitate no longer increases, forming a solid-liquid mixture, preventing the waste of raw materials caused by adding too much sodium hydroxide solution;

[0054] S3. Adjust PH: slowly add ammonia water to the solid-liquid mixture in S2, and stir until the PH of the solid-liquid mixture is 8;

[0055] S4. Filtration: filter the solid-liquid mixture...

Embodiment 3

[0072] A lithium-rich manganese-based material, specifically comprising the following steps:

[0073] S1. get the raw materials ready: in parts by weight, prepare some vitriol salts of nickel, manganese, cobalt, 50 parts of hydrochloric acid solution, 60 parts of ammoniacal liquor, 40 parts of sodium hydroxide solution, the particle size of the vitriol salt of nickel, manganese, cobalt is uniform and without Impurities, the concentration of sodium hydroxide solution is 30%-50%;

[0074] S2. Dissolution: Take 50 parts of the hydrochloric acid solution in S1, dissolve the sulfates of nickel, manganese, and cobalt in the hydrochloric acid solution at a molar ratio of 0.35:0.6:0.05, and slowly add hydroxide Sodium solution, after the precipitation is generated, continue to add sodium hydroxide solution until the precipitate no longer increases, forming a solid-liquid mixture, preventing the waste of raw materials caused by adding too much sodium hydroxide solution, the concentrati...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of lithium battery positive electrode materials, in particular to a lithium-rich manganese-based material and an application method thereof. The method comprises the following steps: S1, preparing materials: preparing, in parts by weight, a plurality of sulfates of nickel, manganese and cobalt, 20-50 parts of a hydrochloric acid solution, 30-60 parts of ammonia water and 20-40 parts of a sodium hydroxide solution; s2, dissolving: taking 20-50 parts of the hydrochloric acid solution in the S1, dissolving sulfates of nickel, manganese and cobalt in the hydrochloric acid solution according to the molar ratio of (0.35-0.5): (0.6-0.8): (0.05-0.1), slowly adding a sodium hydroxide solution under the condition of stirring, and continuously adding the sodium hydroxide solution after precipitates are generated until the precipitates are not increased any more to form a solid-liquid mixture; s3, PH adjustment: slowly adding ammonia water into the solid-liquid mixture in the S2, and stirring until the PH of the solid-liquid mixture is in a range of 8-9. Lithium-rich manganese and spinel lithium manganate are jointly used as the positive electrode material of the lithium ion battery so that the problem that the voltage of the lithium-rich manganese material is continuously reduced in the circulating process is solved, and the lithium battery is stable and reliable.

Description

technical field [0001] The invention relates to the technical field of lithium battery cathode materials, in particular to a lithium-rich manganese-based material and an application method thereof. Background technique [0002] Lithium-rich manganese-based materials (LiT1-xMnxO2, where T is a 3d transition metal) are the key materials to achieve the high energy density target of lithium-ion batteries above 300 Wh / Kg, and are also a hot spot in the current research field of lithium-ion battery cathode materials. Lithium-rich manganese-based layered oxide cathode material (Li1+xTMn1-xO2, or can be written as xLi2MnO3·(1-x)LiTO2) formed by rock salt structural unit Li2MnO3 and hexagonal layered structural unit Li(TMn)O2, manufacturing process Relatively simple, it is one of the most practical lithium-rich manganese-based materials. [0003] Lithium-rich manganese-based materials have the characteristics of high capacity, high working voltage, and relatively low cost, and are e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01G53/00H01M4/505H01M10/0525
CPCC01G53/50H01M4/505H01M10/0525H01M2004/028Y02E60/10
Inventor 陈鹏鹛陈静波马岩华
Owner 安徽博石高科新材料股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com