Invention Grant
- Patent Title: Positive electrode active material for lithium secondary batteries, positive electrode for lithium secondary batteries, and lithium secondary battery
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Application No.: US15113679Application Date: 2015-01-26
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Publication No.: US11557754B2Publication Date: 2023-01-17
- Inventor: Tetsuri Nakayama , Kenji Takamori , Kyousuke Doumae , Takashi Kitamoto
- Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED , TANAKA CHEMICAL CORPORATION
- Applicant Address: JP Tokyo; JP 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
- Agency: Sughrue Mion, PLLC
- Priority: JPJP2014-012835 20140127
- International Application: PCT/JP2015/051992 WO 20150126
- International Announcement: WO2015/111740 WO 20150730
- Main IPC: H01M4/36
- IPC: H01M4/36 ; H01M4/505 ; H01M4/525 ; H01M4/62 ; H01M10/0525 ; H01M10/052 ; H01M10/0587 ; H01M4/02
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
(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
Public/Granted literature
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