Directionally arranged graphene-coated positive electrode material for lithium ion battery

A lithium-ion battery, directional arrangement technology, applied in the direction of battery electrodes, positive electrodes, secondary batteries, etc., can solve the problems of weakening battery processability and safety performance, reduce difficulty, improve safety performance, and reduce voltage attenuation Effect

Active Publication Date: 2019-10-08
宁夏汉尧富锂科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphene is easy to agglomerate, and it is difficult to disperse evenly on the surface of the positive electrode material, making the material highly oxidizable at the end of charging, resulting in the release of a large amount of oxygen, which weakens the processability and safety performance of the battery.

Method used

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  • Directionally arranged graphene-coated positive electrode material for lithium ion battery
  • Directionally arranged graphene-coated positive electrode material for lithium ion battery

Examples

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Effect test

Embodiment 1

[0041] Embodiment 1 of the present invention provides a lithium-ion battery anode material coated with graphene in alignment, and its preparation raw materials include A component, B component and C component; wherein the A component raw material includes fluorine-containing organic matter and organic Solvent; B component raw materials include fluorine-containing organic substances, organic solvents and graphene; C component raw materials include positive electrode active materials;

[0042] The weight ratio of component A, component B and component C is 10:6:99.9;

[0043] The fluorine-containing organic matter in the raw material of component A accounts for 5wt% of component A;

[0044] Graphene in the B component raw material accounts for 1.5wt% of the B component, and the fluorine-containing organic matter in the B component raw material accounts for 0.5wt% of the B component;

[0045] The fluorine-containing organic compound is polyvinylidene fluoride;

[0046] The shee...

Embodiment 2

[0054] Embodiment 2 of the present invention provides a lithium-ion battery positive electrode material coated with graphene in alignment, and its preparation raw materials include A component, B component and C component; wherein the A component raw material includes fluorine-containing organic matter and organic Solvent; B component raw materials include fluorine-containing organic substances, organic solvents and graphene; C component raw materials include positive electrode active materials;

[0055] The weight ratio of component A, component B and component C is 20:10:99.9;

[0056] The fluorine-containing organic matter in the raw material of component A accounts for 20wt% of component A;

[0057] Graphene in the raw material of component B accounts for 8wt% of component B, and fluorine-containing organic matter in the raw material of component B accounts for 5wt% of component B;

[0058] The fluorine-containing organic compound is polyvinylidene fluoride;

[0059] The...

Embodiment 3

[0067] Embodiment 3 of the present invention provides an anode material for lithium ion batteries coated with graphene in alignment, and its preparation raw materials include A component, B component and C component; wherein the A component raw material includes fluorine-containing organic matter and organic Solvent; B component raw materials include fluorine-containing organic substances, organic solvents and graphene; C component raw materials include positive electrode active materials;

[0068] The weight ratio of component A, component B and component C is 5:3:99.3;

[0069] The fluorine-containing organic matter in the raw material of component A accounts for 0.1wt% of component A;

[0070] Graphene in the raw material of component B accounts for 0.1wt% of component B, and fluorine-containing organic matter in the raw material of component B accounts for 0.1wt% of component B;

[0071] The fluorine-containing organic compound is polyvinylidene fluoride;

[0072] The sh...

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Abstract

The invention belongs to the field of preparation of positive electrode materials for lithium ion batteries, and in particular relates to a directionally arranged graphene-coated positive electrode material for a lithium ion battery. According to the directionally arranged graphene-coated positive electrode material for the lithium ion battery, the preparation material comprises an A component, aB component and a C component; the A component comprises a fluorine-containing organic substance and an organic solvent; the B component comprises a fluorine-containing organic substance, an organic solvent and graphene; and the C component comprises a positive electrode active material.

Description

technical field [0001] The invention belongs to the technical field of lithium-ion battery positive electrode materials, and more specifically, the invention provides a lithium-ion battery positive electrode material with oriented arrangement and coated graphene. Background technique [0002] With the rapid development of human society, the demand for energy is constantly increasing, facing the gradual depletion of traditional fossil energy, and the resulting severe situation of environmental pollution, greenhouse effect and energy crisis, all of which affect the sustainable development of society. Therefore, it is imminent to find new energy-efficient renewable energy sources to replace conventional energy sources. Today, lithium-ion battery energy storage devices with large capacity, high power, long stable cycle life and environmental friendliness have become an important pillar in the field of new energy material research and development innovation, and are also widely u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M10/0525
CPCH01M4/625H01M10/0525H01M2004/028Y02E60/10
Inventor 温宇步绍宁刘晓雨杜萍张永龙刘嫄嫄于春奇王欣全
Owner 宁夏汉尧富锂科技有限责任公司
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