HIGH-NICKEL TERNARY ELECTRODE COMPOSITE MATERIAL AND PREPARATION METHOD THEREFOR, AND LITHIUM-ION BATTERY

WIPO Patent Application WO/2023/000541

A1

The present application provides a high-nickel ternary electrode composite material and a preparation method therefor, and a lithium-ion battery. The high-nickel ternary electrode composite material comprises a tungsten-doped ternary electrode material and aluminum oxide coated on the outer surface of the tungsten-doped ternary electrode material. The molecular formula of the tungsten-doped ternary electrode material is: LiNixCoyMnzW(1-x-y-z)O2, wherein 0.5≤x≤0.9, 0≤y≤0.5, 0≤z≤0.5, and 1-x-y-z>0. According to the material, the aluminum oxide material coated on the surface can reduce the impact caused by an electrolyte corroding an active material due to a high temperature while the impact of lithium-nickel mixing is reduced by tungsten doping, so that the electrochemical performance of the high-nickel ternary electrode composite material at a high temperature and a high voltage is improved.

WU HAO (CN)
ZHENG JIANGFENG (CN)
ZHANG CHEN (CN)
GAO QI (CN)
HUANG RENZHONG (CN)
ZHANG YING (CN)
WANG MIAO (CN)

PCT/CN2021/128142

January 26, 2023

November 02, 2021

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GUANGDONG JIANA ENERGY TECH CO LTD (CN)
QINGYUAN JIAZHI NEW MATERIALS RES INSTITUTE CO LTD (CN)

H01M4/36; H01M4/505; H01M4/525

CN113651373A	2021-11-16
CN113363497A	2021-09-07
CN112349892A	2021-02-09
CN109065880A	2018-12-21
CN112018341A	2020-12-01
CN112447967A	2021-03-05
CN110574194A	2019-12-13
KR20170075437A	2017-07-03

SHENZHEN ZHONGYI UNION INTELLECTUAL PROPERTY AGENCY CO.,LTD. (CN)

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