Invention Grant
- Patent Title: Positive electrode active material, positive electrode, battery, battery pack, electronic device, electric vehicle, power storage device, and power system
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Application No.: US15324924Application Date: 2015-07-09
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Publication No.: US10559810B2Publication Date: 2020-02-11
- Inventor: Asuki Yanagihara , Shingo Nakasato , Yuki Niwata , Yosuke Hosoya
- Applicant: Murata Manufacturing Co., Ltd.
- Applicant Address: JP Kyoto
- Assignee: Murata Manufacturing Co., Ltd.
- Current Assignee: Murata Manufacturing Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: K&L Gates LLP
- Priority: JP2014-157040 20140731
- International Application: PCT/JP2015/003465 WO 20150709
- International Announcement: WO2016/017077 WO 20160204
- Main IPC: H01M4/131
- IPC: H01M4/131 ; C01G53/00 ; C01F7/02 ; C01F5/02 ; C01G53/04 ; C01G45/02 ; C01G25/02 ; C01G23/047 ; C01B35/10 ; C01G41/02 ; C01B25/12 ; C01D15/04 ; C01G45/12 ; C01B25/45 ; C01G23/00 ; C01B25/30 ; C01F5/28 ; H01M4/525 ; H01M4/505 ; H01M4/36 ; H01M4/48 ; B60K6/46 ; C01G51/00 ; H01M2/16 ; H01M4/133 ; H01M4/50 ; H01M4/52 ; H01M4/58 ; H01M4/587 ; H01M4/62 ; H01M4/66 ; H01M10/0525 ; H01M10/0568 ; H01M10/0569 ; H01M10/42 ; B60K6/48 ; H01M4/02
Abstract:
A positive electrode active material includes: a particle including a lithium composite oxide; a first layer that is provided on a surface of the particle and includes a lithium composite oxide; and a second layer that is provided on a surface of the first layer. The lithium composite oxide included in the particle and the lithium composite oxide included in the first layer have the same composition or almost the same composition, the second layer includes an oxide or a fluoride, and the lithium composite oxide included in the first layer has lower crystallinity than the lithium composite oxide included in the particle.
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