Invention Application
- Patent Title: POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERIES, AND LITHIUM SECONDARY BATTERY
- Patent Title (中): 用于锂二次电池的正极电极活性材料，锂二次电池的正电极和锂二次电池
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Application No.: US15113679Application Date: 2015-01-26
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Publication No.: US20160380263A1Publication Date: 2016-12-29
- Inventor: Tetsuri NAKAYAMA , Kenji TAKAMORI , Kyousuke DOUMAE , Takashi KITAMOTO
- Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED , TANAKA CHEMICAL CORPORATION
- Applicant Address: JP Tokyo JP Fukui-shi, Fukui
- Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED,TANAKA CHEMICAL CORPORATION
- Current Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED,TANAKA CHEMICAL CORPORATION
- Current Assignee Address: JP Tokyo JP Fukui-shi, Fukui
- Priority: JP2014-012835 20140127
- International Application: PCT/JP2015/051992 WO 20150126
- Main IPC: H01M4/36
- IPC: H01M4/36 ; H01M4/505 ; H01M10/0525 ; H01M4/525
Abstract:
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 α-NaFeO2 type crystal structure of following formula (A): Lia(NibCocM11-b-c)O2 (A) wherein 0.9≦a≦1.2, 0.9≦b
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