Invention Grant
- Patent Title: Secondary-battery negative electrode and manufacturing method thereof, and secondary battery
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Application No.: US16576214Application Date: 2019-09-19
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Publication No.: US11870053B2Publication Date: 2024-01-09
- Inventor: Takuya Sadakane , Hiroshi Kawada , Atsushi Fukui
- 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 17055256 2017.03.22
- Main IPC: H01M4/133
- IPC: H01M4/133 ; H01M4/583 ; H01M4/62 ; H01M10/0525 ; H01M10/0568 ; H01M4/02 ; H01M4/1393

Abstract:
A secondary-battery negative electrode includes: a negative electrode collector; and a negative electrode active material layer provided on a surface of the negative electrode collector, and the negative electrode active material layer includes active material particles and amorphous carbon which covers at least parts of surfaces of the active material particles. At least a part of a surface of the amorphous carbon is covered with a film having a lithium ion permeability, the film contains an element M, and the element M is at least one selected from the group consisting of P, Si, B, V, Nb, W, Ti, Zr, Al, Ba, La, and Ta.
Public/Granted literature
- US20200020927A1 SECONDARY-BATTERY NEGATIVE ELECTRODE AND MANUFACTURING METHOD THEREOF, AND SECONDARY BATTERY Public/Granted day:2020-01-16
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