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

Efficient sulfur/carbon doped lithium cobalt oxide cathode material and preparation method thereof

A positive electrode material, lithium cobalt oxide technology, which is applied in the field of high-efficiency sulfur/carbon doped lithium cobalt oxide positive electrode material and its preparation, can solve problems such as restricting development prospects, lack of cobalt resources, and high price, and achieve extended storage time, Improved self-discharge, low-cost effect

Inactive Publication Date: 2014-09-24
QINGDAO QIANYUN HIGH TECH NEW MATERIAL
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Since the commercialization of lithium-ion batteries, most of the positive electrode materials used in lithium-ion batteries are lithium cobaltate, lithium cobaltate or ternary materials, etc., and its components are mainly active materials plus conductive agents and then binders. The active materials Lithium cobaltate, lithium cobaltate or ternary, etc.; most of the negative electrode materials use graphite as the active material, and then add some conductive agent and binder; its advantages are high capacity and long cycle life, but cobalt resources are scarce and expensive And it is toxic, so it is an important research direction for lithium-ion batteries to seek cheap, reliable, and environmentally friendly cathode materials.
Spinel-type positive electrode materials represented by lithium cobaltate and layered oxides of ternary materials have been widely studied in the past decade, but their development prospects are restricted by their respective defects.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The high-efficiency sulfur / carbon doped lithium cobalt oxide positive electrode material is prepared by the following components according to the ratio shown, sulfur / carbon composite material 30, active material 95, functional material 3, conductive material 6, Adhesive material6. The functional material is 60% lithium iron nitrate solution. The positive electrode material is lithium cobalt oxide. The conductive agent is flake graphite

[0014] The preparation method of the high-efficiency sulfur / carbon doped lithium cobalt oxide cathode material comprises the following steps:

[0015] (1) Put the carbon material and sublimed sulfur or sulfur powder into a zirconia or agate ball mill jar according to the above weight ratio, inject the ball mill jar with high-purity inert gas in the glove box, and place it on a planetary ball mill for 5 hours. The ball milling speed is 500 r / min, the mass ratio of elemental sulfur and carbon is 1:2~3:2; the sulfur / carbon composite mat...

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 an efficient sulfur / carbon doped lithium cobalt oxide cathode material and a preparation method thereof. The efficient sulfur / carbon doped lithium cobalt oxide cathode material is prepared from the following components in parts by weight: 30 parts of sulfur / carbon composite material, 95 parts of active material, 3 parts of functional material, 6 parts of conductive material and 6 parts of binding material, wherein the functional material is 60% lithium iron nitrate solution; the cathode material is lithium cobalt oxide; the conductive agent is flake graphite. The defect of failure of lithium ion batteries caused by self-discharge of protection boards is overcome by adopting the efficient sulfur / carbon doped lithium cobalt oxide cathode material, thus improving self-discharge of the whole battery pack, achieving the aim of prolonging the lithium battery storage time and ensuring that the lithium batteries can be stored for a longer time under the condition that users do not charge the electric appliances after using the electric appliances.

Description

technical field [0001] The invention relates to a high-efficiency sulfur / carbon doped lithium cobalt oxide cathode material and a preparation method thereof. Background technique [0002] Since the commercialization of lithium-ion batteries, most of the positive electrode materials used in lithium-ion batteries are lithium cobaltate, lithium cobaltate or ternary materials, etc., and its components are mainly active materials plus conductive agents and then binders. The active materials Lithium cobaltate, lithium cobaltate or ternary, etc.; most of the negative electrode materials use graphite as the active material, and then add some conductive agent and binder; its advantages are high capacity and long cycle life, but cobalt resources are scarce and expensive And it is toxic, so it has become an important research direction for lithium-ion batteries to seek cheap, reliable, and environmentally friendly cathode materials. Spinel-type cathode materials represented by lithium...

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): H01M4/38H01M4/58
CPCH01M4/364H01M4/38H01M4/525H01M4/587H01M10/0525Y02E60/10
Inventor 孙琦李岩孙慧英
Owner QINGDAO QIANYUN HIGH TECH NEW MATERIAL
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