Invention Grant
- Patent Title: Negative electrode for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery
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Application No.: US17296481Application Date: 2019-11-11
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Publication No.: US12027708B2Publication Date: 2024-07-02
- Inventor: Kouhei Tsuzuki , Yuki Morikawa , Hirokazu Wada , Katsunori Yanagida
- Applicant: Panasonic Intellectual Property Management Co., Ltd.
- Applicant Address: JP Osaka
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: WHDA, LLP
- Priority: JP 18225707 2018.11.30
- International Application: PCT/JP2019/044176 2019.11.11
- International Announcement: WO2020/110691A 2020.06.04
- Date entered country: 2021-05-24
- Main IPC: H01M4/62
- IPC: H01M4/62 ; H01M4/02 ; H01M4/133 ; H01M4/587

Abstract:
A negative electrode for a nonaqueous electrolyte secondary battery, said negative electrode comprising a negative-electrode current collector, and a negative-electrode active material layer provided upon the negative-electrode current collector, wherein the negative-electrode active material layer includes a negative-electrode active material and polyvinylpyrrolidone, and an area that extends 10% in the thickness direction from the surface of the reverse side of the negative-electrode active material layer from the negative-electrode current collector has a higher polyvinylpyrrolidone content than an area that extends 10% in the thickness direction from the surface of the negative-electrode current collector side of the negative-electrode active material layer.
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