Invention Grant
- Patent Title: Positive electrode active material, lithium ion secondary battery, and method of producing positive electrode active material
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Application No.: US15953947Application Date: 2018-04-16
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Publication No.: US10971720B2Publication Date: 2021-04-06
- Inventor: Ryuta Sugiura , Satoshi Kanada , Tetsutaro Hayashi , Taira Aida
- Applicant: Toyota Jidosha Kabushiki Kaisha , Sumitomo Metal Mining Co., Ltd.
- Applicant Address: JP Toyota; JP Tokyo
- Assignee: Toyota Jidosha Kabushiki Kaisha,Sumitomo Metal Mining Co., Ltd.
- Current Assignee: Toyota Jidosha Kabushiki Kaisha,Sumitomo Metal Mining Co., Ltd.
- Current Assignee Address: JP Toyota; JP Tokyo
- Agency: Dinsmore & Shohl LLP
- Priority: JPJP2017-088476 20170427
- Main IPC: H01M4/36
- IPC: H01M4/36 ; H01M10/0525 ; H01M4/525 ; H01M4/505 ; H01M4/62 ; C01G53/00 ; C01G51/00 ; C01G45/12 ; H01M4/02
Abstract:
A positive electrode active material includes secondary particles. The secondary particles include a plurality of primary particles. The primary particles include a lithium-containing composite metal oxide. Inside the secondary particles, an electron conducting oxide is disposed at at least a part of a grain boundary between the primary particles. The electron conducting oxide has a perovskite structure.
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