ELECTROLYTIC COPPER FOIL AND NEGATIVE ELECTRODE CURRENT COLLECTOR FOR SECONDARY BATTERY

摘要

Provided is an electrolytic copper foil exhibiting a high normal tensile strength, and a small tensile strength-reduction after a thermal history. The electrolytic copper foil has a normal tensile strength in the range of 500-750MPa, and a tensile strength after heating for 1 hour at 400�C of at least 350MPa.