Invention Grant
- Patent Title: Positive electrode active material for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery
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Application No.: US16486911Application Date: 2018-02-01
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Publication No.: US11283059B2Publication Date: 2022-03-22
- Inventor: Hidekazu Hiratsuka
- Applicant: Panasonic Corporation
- Applicant Address: JP Kadoma
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Kadoma
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JPJP2017-030438 20170221
- International Application: PCT/JP2018/003377 WO 20180201
- International Announcement: WO2018/155121 WO 20180830
- Main IPC: H01M4/131
- IPC: H01M4/131 ; C01G53/04 ; H01M4/1391 ; H01M4/485 ; H01M4/505 ; H01M4/525 ; H01M10/0525 ; H01M4/02
Abstract:
A positive electrode active material for nonaqueous electrolyte secondary batteries includes secondary particles of lithium transition metal oxide including aggregates of primary particles of the oxide. The primary particles have an average particle size of not less than 1 μm, and the secondary particles have a void content of more than 30%.
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