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

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United States of America Patent

PATENT NO 11749794
APP PUB NO 20210257603A1
SERIAL NO

17246657

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Abstract

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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.

description='In-line Formulae' end='lead'TOC/(cobalt+iron)=1.3 to 1.5  [Formula 1]description='In-line Formulae' end='tail'

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Patent Owner(s)

Patent OwnerAddress
LOTTE ENERGY MATERIALS CORPORATION63-25 SEOGAM-RO 3-GIL IKSAN-SI JEOLLABUK-DO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jo, Tae Jin Iksan, KR 18 44
Lee, Sun Hyoung Iksan, KR 29 155
Park, Seul-Ki Iksan, KR 17 16
Song, Ki Deok Iksan, KR 23 47

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