Invention Grant
- Patent Title: Negative electrode material, non-aqueous electrolyte secondary battery, and method of producing the same
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Application No.: US16288225Application Date: 2019-02-28
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Publication No.: US11296314B2Publication Date: 2022-04-05
- Inventor: Ryosuke Ohsawa , Akira Tsujiko , Kaoru Inoue
- Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Applicant Address: JP Toyota
- Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee Address: JP Toyota
- Agency: Oliff PLC
- Priority: JPJP2018-061641 20180328
- Main IPC: H01M4/36
- IPC: H01M4/36 ; H01M4/48 ; H01M4/485 ; H01M4/04 ; H01M4/1391 ; H01M4/62 ; H01M10/0525 ; H01M4/131 ; H01M4/02
Abstract:
A negative electrode material contains composite particles. Each of the composite particles contains a negative electrode active material particle and a film. The negative electrode active material particle contains a silicon oxide phase and a lithium silicate phase. The film covers a surface of the negative electrode active material particle. The film contains an anion-exchange resin. To an ion-exchange group of the anion-exchange resin, a fluoride ion is bound. The content of the anion-exchange resin in the negative electrode material is not higher than 33 mass %.
Public/Granted literature
- US20190305305A1 NEGATIVE ELECTRODE MATERIAL, NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD OF PRODUCING THE SAME Public/Granted day:2019-10-03
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