Invention Grant
- Patent Title: Copper foil for current collector of lithium secondary battery
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Application No.: US15782494Application Date: 2017-12-04
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Publication No.: US10205170B1Publication Date: 2019-02-12
- Inventor: Huei-Fang Huang , Kuei-Sen Cheng , Yao-Sheng Lai , Jui-Chang Chou
- Applicant: CHANG CHUN PETROCHEMICAL CO., LTD.
- Applicant Address: TW Taipei
- Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.
- Current Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.
- Current Assignee Address: TW Taipei
- Agency: Nixon Peabody LLP
- Agent Thomas P. Pavelko
- Main IPC: H01M4/66
- IPC: H01M4/66 ; C25D7/06 ; H01M10/052 ; H01M4/04 ; H01M4/38 ; H01M4/02

Abstract:
Electrodeposited copper foils having adequate puncture strength to withstand both pressure application during consolidation with negative electrode active materials during manufacture, as well as expansion/contraction during repeated charge/discharging cycles when used in a rechargeable secondary battery are described. These copper foils find specific utility as current collectors in rechargeable secondary batteries, particularly in lithium secondary battery with high capacity. Methods of making the copper foils, methods of producing negative electrode for use in lithium secondary battery and lithium secondary battery of high capacity are also described.
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