Copper foil free from generation of wrinkles, electrode comprising the same, secondary battery comprising the same and method for manufacturing the same
US11505873B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Jul 25, 2018 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Jan 20, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12431
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a copper foil including a copper layer having a matte surface and a shiny surface, and an anticorrosive layer disposed on the copper layer, wherein the copper foil has a residual stress of 0.5 to 25 Mpa, based on absolute value, and the copper layer has a plurality of crystal planes, wherein a ratio [TCR (220)] of a texture coefficient (TC) of (220) crystal plane of the copper layer to a total of texture coefficients (TC) of (111), (200), (220) and (311) crystal planes of the copper layer is 5 to 30%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.