Copper foil having improved workability and charge/discharge characteristics, electrode including the same, secondary battery including the same and method for manufacturing the same
US10658655B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2018 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Aug 27, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- 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, 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.