Patent ID: 11866843
Assignee: LOTTE ENERGY MATERIALS CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H  Y | IPC C  H

Claim 0:
1. A method for producing an electrolytic copper foil for a secondary battery, the method comprising:
(1) preparing a plating solution containing copper, total organic carbon (TOC), cobalt, iron and zinc; and
(2) performing electrolytic-plating of the plating solution using a drum at a temperature of 30° C. to 70° C. by applying a current at a current density 30 ASD to 150 ASD to the drum, thereby to form the electrolytic copper foil,, wherein a content of TOC and contents of cobalt, iron and zinc contained in the electrolytic copper foil satisfy a following Equation 1:

TOC content/(cobalt content+iron content+zinc content)=1.0 to 1.2.  [Equation 1]