Invention Grant
- Patent Title: Positive-electrode active material for lithium secondary battery, positive electrode for lithium secondary battery, and lithium secondary battery
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Application No.: US16645778Application Date: 2018-11-20
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Publication No.: US10923719B2Publication Date: 2021-02-16
- Inventor: Jun-ichi Kageura , Ryota Kobayashi
- 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: McDermott Will & Emery LLP
- Priority: JP2017-222627 20171120
- International Application: PCT/JP2018/042817 WO 20181120
- International Announcement: WO2019/098384 WO 20190523
- Main IPC: H01M4/525
- IPC: H01M4/525 ; H01M10/0525 ; C01G53/00 ; H01M4/505 ; H01M4/02
Abstract:
A positive-electrode active material for a lithium secondary battery includes: a secondary particle in which a plurality of primary particles of a lithium composite metal oxide are aggregated, in which the secondary particle has a void formed therein, and a through-hole that connects the void to a surface of the secondary particle, and satisfies predetermined requirements (i) to (iii).
Public/Granted literature
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