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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11171319 B1

PDFFull Text
Date of Patent:
Nov. 09, 2021

Filed:

Mar. 28, 2017

Electrolytic copper foil for secondary battery and method for producing the same

Applicant:

Iljin Materials Co., Ltd., Iksan, KR;

Inventors:

Sun Hyoung Lee, Iksan, KR;

Tae Jin Jo, Iksan, KR;

Seul-Ki Park, Iksan, KR;

Ki Deok Song, Iksan, KR;

Assignee:

ILJIN MATERIALS CO., LTD., Iksan-si, KR;

Attorney:

Patent Office of Dr. Chung Park

Primary Examiner:

Yoshitoshi Takeuchi

Int. Cl.
CPC ...
C22C 9/00 (2006.01); C25D 1/04 (2006.01); C25D 3/38 (2006.01); H01M 4/04 (2006.01); H01M 4/1395 (2010.01); H01M 4/139 (2010.01); H01M 4/134 (2010.01); H01M 10/02 (2006.01); H01M 4/66 (2006.01); C25D 17/12 (2006.01);
U.S. Cl.
CPC ...
H01M 4/0407 (2013.01); C22C 9/00 (2013.01); C25D 1/04 (2013.01); C25D 3/38 (2013.01); C25D 17/12 (2013.01); H01M 4/0404 (2013.01); H01M 4/66 (2013.01); H01M 4/661 (2013.01); H01M 10/02 (2013.01);
Abstract

The present invention relates to an electrolytic copper foil for a secondary battery, and a method of producing the same. The electrolytic copper foil for a secondary battery exhibits a little change in a physical property caused by a difference in a crosshead speed when tensile strength and an elongation percentage of the electrolytic copper foil are measured, thereby achieving excellent charging and discharging characteristics of a battery and preventing exfoliation of an active material. The electrolytic copper foil for a secondary battery is produced from a plating solution containing Total Organic Carbon (TOC), cobalt, and iron by using a drum, in which a ratio of the TOC to the cobalt and the iron contained in the electrolytic copper foil follows Formula 1 below.TOC/(cobalt+iron)=1.3 to 1.5  [Formula 1]

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