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

Method for preparing lithium silicate coated lithium ion battery ternary layered anode material

A ternary layered, ion battery technology, applied in the direction of battery electrodes, electrical components, circuits, etc., to achieve the effects of high production efficiency, large output, and easy access to raw materials

Inactive Publication Date: 2015-04-08
UNIVERSITY OF CHINESE ACADEMY OF SCIENCES
View PDF3 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of synthetic methods, no one has reported

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
  • Method for preparing lithium silicate coated lithium ion battery ternary layered anode material
  • Method for preparing lithium silicate coated lithium ion battery ternary layered anode material
  • Method for preparing lithium silicate coated lithium ion battery ternary layered anode material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0015] The preparation method of lithium silicate-coated lithium-ion battery ternary layered cathode material proposed by the present invention comprises the following steps:

[0016] (1) Preparation of oxalate precursor:

[0017] According to the molar ratio NiSO 4 、CoSO 4 , MnSO 4 Dissolve in 50ml of water so that the molar concentration of metal Ni ions, metal Co ions and metal Mn ions is 2mol / L to obtain a mixed solution of metal ions, and then configure NaC with a molar concentration of 2mol / L 2 o 4 Solution 50mL, under magnetic stirring, NaC 2 o 4 The solution was added to the mixed solution of metal ions to produce a precipitate. After stirring for 2 hours, it was centrifuged, and the precipitate was washed twice with deionized water and absolute ethanol respectively, and the precipitate was dried in an oven at 70°C for 12 hours to obtain the Salt precursor, the molecular formula of the oxalate precursor is: Ni 0.333 co 0.333 mn 0.333 C 2 o 4 2H 2 O;

[001...

Embodiment 1

[0024] (1) According to the molar ratio, NiSO 4 、CoSO 4 , MnSO 4 Dissolve in 50ml of water so that the molar concentrations of metal Ni ions, metal Co ions and metal Mn ions are all 2 mol / L to obtain a mixed solution of metal ions. Then configure 2mol / L NaC 2 o 4 Solution 50mL, under magnetic stirring, NaC 2 o 4 The solution was added to the mixed solution of metal ions, and a large amount of precipitation was produced immediately. After stirring for 2 hours, it was centrifuged, washed twice with deionized water and absolute ethanol, and dried in a 70-degree oven for 12 hours to obtain the oxalate precursor. body;

[0025] (2) SiO 2 Synthesis of coated oxalate precursor: Weigh 1.2 mmol of the above-obtained oxalate precursor and disperse it in 13 ml of absolute ethanol, stir and ultrasonically disperse. According to the molar ratio of Si:(Ni+Co+Mn)=3:100, Si(OC 2 h 5 ) 4Anhydrous ethanol solution, stir to disperse evenly. Then the mixed solution was transferred to ...

Embodiment 2

[0029] (1) Preparation of oxalate precursor: mix NiSO 4 、CoSO 4 , MnSO 4 Dissolve in 50ml of water so that the molar concentrations of metal Ni ions, metal Co ions and metal Mn ions are all 2 mol / L to obtain a mixed solution of metal ions. Then configure 2mol / L NaC 2 o 4 Solution 50mL, under magnetic stirring, NaC 2 o 4 The solution was added to the mixed solution of metal ions, and a large amount of precipitation was produced immediately. After stirring for 2 hours, it was centrifuged, washed twice with deionized water and absolute ethanol, and dried in a 70-degree oven for 12 hours to obtain the oxalate precursor. body;

[0030] (2) SiO 2 Synthesis of coated oxalate precursor: Weigh 1.2 mmol of the above-obtained oxalate precursor and disperse it in 13 ml of absolute ethanol, stir and ultrasonically disperse. According to the molar ratio of Si:(Ni+Co+Mn)=3:100, Si(OC 2 h 5 ) 4 Anhydrous ethanol solution, stir to disperse evenly. Then the mixed solution was transf...

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 a method for preparing a lithium silicate coated lithium ion battery ternary layered anode material and belongs to the technical field of inorganic materials. According to the method disclosed by the invention, the lithium silicate coated lithium ion battery ternary layered anode material is prepared by virtue of simple coprecipitation, hydrothermal and high-temperature solid-phase sintering reaction. The method disclosed by the invention is simple in synthetic process, high in production efficiency and suitable for large-scale production. Moreover, according to the method disclosed by the invention, raw materials needed by the reactants are readily available, non-toxic and low in cost, special protection is not needed in the production process, the reaction conditions are easily controlled, and the obtained product has the advantages of high yield, high result repeatability and the like. Compared with uncoated materials, the lithium silicate coated lithium ion battery ternary layered anode material prepared by the method disclosed by the invention has the advantages that the specific capacity, cycling stability, rate and other electrochemical performances of the battery are greatly improved.

Description

technical field [0001] The invention relates to a preparation method of a lithium silicate-coated lithium-ion battery ternary layered cathode material, belonging to the technical field of inorganic materials. Background technique [0002] The depletion of traditional fossil resources and the increasingly serious environmental pollution make the development of new energy imminent. As a new generation of energy storage system, lithium-ion batteries have attracted much attention due to their advantages of high efficiency, cleanliness, and high energy density, and have been widely used in the field of microelectronic products such as mobile phones, notebook computers, and digital cameras. However, the specific capacity, energy density and safety of lithium-ion batteries cannot meet the needs of the development of electric vehicles, and the main bottleneck limiting the energy density of lithium-ion batteries is the cathode material. Therefore, the development of cathode materials...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/505H01M4/525
CPCH01M4/366H01M4/505H01M4/525Y02E60/10
Inventor 肖小玲刘向峰赵恩岳胡中波
Owner UNIVERSITY OF CHINESE ACADEMY OF SCIENCES
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