ELECTROLYTIC COPPER FOIL PROOF AGAINST TEAR OR WRINKLE DEFECTS, ELECTRODE COMPRISING SAME, SECONDARY BATTERY COMPRISING SAME, AND MANUFACTURING METHOD THEREFOR

An embodiment of the present disclosure provides an electrolytic copper foil, which comprises a copper layer and has a valley mean roughness of 0.8 to 12.5, a texture coefficient of (220) face (TC(220)) of 0.49 to 1.28, a tensile strength of 25 to 51 kgf/mm2, and a weight deviation in lateral direction of 3% or less.