Invention Grant
- Patent Title: Negative electrode and lithium ion secondary battery
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Application No.: US16608896Application Date: 2019-03-22
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Publication No.: US11411223B2Publication Date: 2022-08-09
- Inventor: Chieko Shimizu
- Applicant: TDK CORPORATION
- Applicant Address: JP Tokyo
- Assignee: TDK CORPORATION
- Current Assignee: TDK CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JPJP2018-055056 20180322,JPJP2018-055176 20180322,JPJP2018-055253 20180322
- International Application: PCT/JP2019/012259 WO 20190322
- International Announcement: WO2019/182150 WO 20190926
- Main IPC: H01M4/62
- IPC: H01M4/62 ; H01M10/05 ; H01M10/0525 ; H01M4/02
Abstract:
A negative electrode includes a current collector and a negative electrode layer coated on at least one surface of the current collector. The negative electrode layer containing either phosphorus or fluorine, and the phosphorus content or fluorine content in the central portion of the negative electrode layer differs from the average phosphorus content in the end portion outward from the central portion to the side or the average fluorine content, and the phosphorus content P1 in the central portion and the average phosphorus content in the end portion P2 is 1
Public/Granted literature
- US20200274166A1 NEGATIVE ELECTRODE AND LITHIUM ION SECONDARY BATTERY Public/Granted day:2020-08-27
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