Invention Grant
- Patent Title: Non-aqueous electrolyte secondary battery
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Application No.: US17056212Application Date: 2019-04-26
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Publication No.: US11962011B2Publication Date: 2024-04-16
- Inventor: Sho Urata , Nobuhiro Sakitani
- 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 18103858 2018.05.30
- International Application: PCT/JP2019/017891 2019.04.26
- International Announcement: WO2019/230296A 2019.12.05
- Date entered country: 2020-11-17
- Main IPC: H01M4/62
- IPC: H01M4/62 ; H01M4/13 ; H01M10/0525 ; H01M10/0587 ; H01M4/02 ; H01M4/134

Abstract:
A battery including a coiled electrode assembly with positive and negative electrodes coiled with a separator interposed therebetween, where the negative electrode includes a negative electrode current collector, a first negative electrode mixture layer formed on a first surface of the negative electrode current collector, the first surface facing an outside of the electrode assembly, and a second negative electrode mixture layer formed on a second surface of the negative electrode current collector, the second surface facing an inside of the electrode assembly. The first negative electrode mixture layer contains cellulose and rubber binders. A content of the cellulose binder is larger near a surface of the mixture layer than near the negative electrode current collector and a content of the rubber binder is larger near the negative electrode current collector than near the surface of the mixture layer in the thickness direction of the first negative electrode mixture layer.
Public/Granted literature
- US20210313581A1 NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY Public/Granted day:2021-10-07
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