Invention Grant
- Patent Title: Positive electrode and non-aqueous electrolyte secondary battery including the same
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Application No.: US16139129Application Date: 2018-09-24
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Publication No.: US10964952B2Publication Date: 2021-03-30
- Inventor: Koji Torita , Shuji Tsutsumi , Yusuke Fukumoto
- 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: Sughrue Mion, PLLC
- Priority: JPJP2017-206208 20171025
- Main IPC: H01M4/00
- IPC: H01M4/00 ; H01M4/62 ; H01M10/0525 ; H01M4/36 ; H01M4/02

Abstract:
A positive electrode for a non-aqueous electrolyte secondary battery includes a positive electrode current collector, a protective layer provided on a surface of the positive electrode current collector, and a positive electrode composite material layer containing a positive electrode active material provided on a surface of the protective layer. The protective layer includes an insulating filler, a binder, and a conductive material. The protective layer is composed of a central portion and an end portion in a plan view as seen from the stacking direction. The ratio of the conductive material in the end portion of the protective layer is smaller than the ratio of the conductive material in the central portion of the protective layer. The ratio Sc/S of the area Sc of the end portion of the protective layer to the total area S of the protective layer in plan view is 0.12 or more.
Public/Granted literature
- US20190123357A1 POSITIVE ELECTRODE AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY INCLUDING THE SAME Public/Granted day:2019-04-25
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