Copper foil with minimized bagginess and tear, electrode comprising the same, secondary battery comprising the same and method for manufacturing the same
US11352707B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Aug 17, 2018 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | Nov 15, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed is a copper foil including a copper layer and an anticorrosive layer disposed on the copper layer, wherein the copper foil has a peak to arithmetic mean roughness (PAR) of 0.8 to 12.5, a tensile strength of 29 to 58 kgf/mm2, and a weight deviation of 3% or less, wherein the PAR is calculated in accordance with the following Equation 1: PAR=Rp/Ra [Equation 1]
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.