- 专利标题： POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERIES, AND LITHIUM SECONDARY BATTERY
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申请号： EP15740333.8申请日： 2015-01-26
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公开(公告)号： EP3101716B1公开(公告)日： 2018-07-04
- 发明人: NAKAYAMA Tetsuri , TAKAMORI Kenji , DOUMAE Kyousuke , KITAMOTO Takashi
- 申请人： Sumitomo Chemical Company, Limited , Tanaka Chemical Corporation
- 申请人地址： 27-1, Shinkawa 2-chome Chuo-ku Tokyo 104-8260 JP
- 专利权人： Sumitomo Chemical Company, Limited,Tanaka Chemical Corporation
- 当前专利权人： Sumitomo Chemical Company, Limited,Tanaka Chemical Corporation
- 当前专利权人地址： 27-1, Shinkawa 2-chome Chuo-ku Tokyo 104-8260 JP
- 代理机构： J A Kemp
- 优先权： JP2014012835 20140127
- 国际公布： WO2015111740 20150730
- 主分类号： H01M4/525
- IPC分类号： H01M4/525 ; H01M4/36 ; H01M4/505
摘要：
A positive electrode active material for a lithium secondary battery, comprising a lithium-containing composite metal oxide in the form of secondary particles formed by aggregation of primary particles capable of being doped and undoped with lithium ions, each of the secondary particles having on its surface a coating layer, the positive electrode active material satisfying the following requirements (1) to (3): (1) the metal oxide has an ±-NaFeO 2 type crystal structure of following formula (A): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒLi a (Ni b Co c M 1 1-b-c )O 2 €ƒ€ƒ€ƒ€ƒ€ƒ(A) wherein 0.9 ‰¦ a ‰¦ 1.2, 0.9 ‰¦ b
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