Electrolytic copper foil having high-temperature dimensional stability and texture stability, and manufacturing method therefor
US11346015B2 · kind B2 · utility
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2References
5Claims
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Key dates
| Filing date | Jan 25, 2019 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Jan 25, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12431
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to: an electrolytic copper foil having high dimensional stability and texture stability in a high temperature environment of a process for manufacturing an Li secondary battery; and a manufacturing method therefor. The electrolytic copper foil of the present invention has a thermal expansion coefficient of 17.1-22 μm/(m·° C.) in a temperature region of 30-190° C., has a variation of full width at half maximum of the (220) plane of 0.81-1.19 according to heat treatment for 30 minutes at 190° C., and has a weight deviation of 5% or less in the transverse direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.