Title:
ELECTROLYTIC COPPER FOIL CAPABLE OF PREVENTING TEARING OR WRINKLE DEFECTS, ELECTRODE CONTAINING SAME, SECONDARY BATTERY CONTAINING SAME, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2021/091250
Kind Code:
A1
Abstract:
One embodiment of the present invention provides an electrolytic copper foil including a copper layer and having a weight deviation of 5% or less in the width direction calculated by following Equation 1, a tensile strength of 25 to 62 kgf/mm 2, and a valley depth to thickness (VDT) of 3.5 to 66.9 calculated by following Equation 2. [Equation 1] Weight deviation (%) in the width direction = (Standard deviation of weight/arithmetic mean of weight)Х100 [Equation 2] Valley depth to thickness (VDT) = [Thickness of electrolytic copper foil]/[Maximum valley depth of roughness profile (Rv)]
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Inventors:
KIM YOUNG TAE (KR)
JUN SANG HYUN (KR)
LEE JEONG GIL (KR)
KIM SEUNG MIN (KR)
JUN SANG HYUN (KR)
LEE JEONG GIL (KR)
KIM SEUNG MIN (KR)
Application Number:
PCT/KR2020/015390
Publication Date:
May 14, 2021
Filing Date:
November 05, 2020
Export Citation:
Assignee:
SK NEXILIS CO LTD (KR)
International Classes:
C25D1/04; C25D3/38; C25D5/48; H01M4/13; H01M4/66; H01M10/052
Foreign References:
| KR20190007705A | 2019-01-23 | |||
| KR20190093448A | 2019-08-09 | |||
| US20190006658A1 | 2019-01-03 | |||
| KR20190025273A | 2019-03-11 | |||
| CN110396704A | 2019-11-01 | |||
| JP2001011685A | 2001-01-16 |
Other References:
See also references of EP 3913115A4
Attorney, Agent or Firm:
ASTRAN INT'L IP GROUP (KR)
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