Title:
ELECTROLYTIC COPPER FOIL FOR SECONDARY BATTERY, HAVING EXCELLENT PHYSICAL PROPERTIES AT LOW TEMPERATURE, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2018/088644
Kind Code:
A1
Abstract:
The present invention relates to an electrolytic copper foil for a secondary battery, having excellent physical properties at a low temperature, and a method for producing the electrolytic copper foil and, more specifically, to an electrolytic copper foil for a secondary battery, which shows little change in the physical properties, such as tensile strength and elongation, of a copper foil even at a low temperature and thereby exhibits excellent cycle properties at the low temperature, and to a method for producing the electrolytic copper foil. According to an aspect of the present invention, an embodiment of the prevent invention includes an electrolytic copper foil for a secondary battery, which is produced from a plating solution, containing total organic carbon (TOC), cobalt, iron and zinc, by using a drum and coated with a cathode active material, wherein the ratio between the TOC, cobalt, iron and zinc contained in the electrolytic copper foil follows the following formula 1: [Formula 1] TOC / (cobalt + iron + zinc) = 1.0 - 1.2.
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Inventors:
LEE SUN HYOUNG (KR)
JO TAE JIN (KR)
PARK SEUL-KI (KR)
SONG KI DEOK (KR)
JO TAE JIN (KR)
PARK SEUL-KI (KR)
SONG KI DEOK (KR)
Application Number:
PCT/KR2017/003373
Publication Date:
May 17, 2018
Filing Date:
March 28, 2017
Export Citation:
Assignee:
ILJIN MAT CO LTD (KR)
International Classes:
H01M4/66; C25D1/04; C25D3/38; H01M4/04
Foreign References:
| KR20140041804A | 2014-04-04 | |||
| KR20160102147A | 2016-08-29 | |||
| KR20160119269A | 2016-10-12 | |||
| JP5940256B2 | 2016-06-29 | |||
| JP5718426B2 | 2015-05-13 |
Other References:
See also references of EP 3540834A4
Attorney, Agent or Firm:
CHOI, Hoon Sik (KR)
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