- Patent Title: Copper foil having improved workability and charge/discharge characteristics, electrode including the same, secondary battery including the same and method for manufacturing the same
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Application No.: US16113479Application Date: 2018-08-27
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Publication No.: US10658655B2Publication Date: 2020-05-19
- Inventor: Young Wook Chae , Young Hyun Kim , Shan Hua Jin
- Applicant: KCF Technologies Co., Ltd.
- Applicant Address: KR Anyang-si, Gyeonggi-Do
- Assignee: KCF TECHNOLOGIES CO., LTD.
- Current Assignee: KCF TECHNOLOGIES CO., LTD.
- Current Assignee Address: KR Anyang-si, Gyeonggi-Do
- Agency: K&L Gates LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@4a404ab2
- Main IPC: H01M4/66
- IPC: H01M4/66 ; H01M4/134 ; H01M4/1395 ; H01M4/04 ; C25D3/38 ; C25D5/56 ; C25D1/04 ; H01M4/02 ; H01M10/0525 ; H01M4/133 ; H01M4/36
Abstract:
Disclosed is a copper foil including a copper layer having a matte surface and a shiny surface, wherein the copper foil has a first surface of a direction of the matte surface of the copper layer and a second surface of a direction of the shiny surface of the copper layer, wherein a dynamic friction coefficient of the first surface is designated by μk1 and a dynamic friction coefficient of the second surface is designated by μk2. A ratio of three-dimensional surface area to two-dimensional surface area of the first surface is designated by Fs1, a ratio of three-dimensional surface area to two-dimensional surface area of the second surface is designated by Fs2.
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