Multicomponent material with multilayer coating structure for lithium ion battery and preparation method thereof

A lithium-ion battery, multi-layer coating technology, applied in the direction of electrode manufacturing, electrical components, secondary batteries, etc., can solve the problems of battery expansion, high temperature safety, low safety performance, nickel material reduction, etc., to achieve high temperature cycle stability, High safety and low battery swelling effect
CN101997113AInactive Publication Date: 2011-03-30BEIJING EASPRING MATERIAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING EASPRING MATERIAL TECH CO LTD
Publication Date
2011-03-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a multicomponent material for a lithium ion battery and a preparation method thereof, and particularly relates to a multicomponent material with a multilayer coating structure for a lithium ion battery and a preparation method thereof. The multicomponent material with the multilayer coating structure comprises an inner core and coating layers, wherein both the inner core and the coating layers comprise lithium-containing metallic oxides; and the number n of the coating layers is 1 to 5. The multicomponent material with the multilayer coating structure has a simple preparation process, relatively low cost and high processability; and the lithium ion battery made of the material has a small amount of swelling, high capacity, high high-temperature cyclical stability and high safety.
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Description

technical field

[0001] The present invention relates to a multi-element material for a lithium ion battery and a preparation method thereof, in particular to a multi-element material with a multi-layer coating structure for a lithium ion battery and a preparation method thereof; Background technique

[0002] Lithium-ion batteries are more and more widely used in modern society, and are currently mainly used in mobile phones, notebook computers, power tools and electric vehicles. With the increase in the amount of lithium-ion batteries and the demand for large-capacity lithium-ion batteries for electric vehicles, it is urgent to develop lithium-ion batteries with high safety, high energy density, high power, long cycle life, high environmental protection and low cost. Cathode materials are the key materials that determine the performance and price of lithium-ion batteries. LiCoO is currently the most researched and applied cathode material. 2 , LiNiO 2 、LiNi x co 1-x o 2...

Claims

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