Electrolytic copper foil and Current collector for lithium secondary battery and Secondary battery comprising the same

摘要

An electrolytic copper foil according to an embodiment of the present invention is an electrolytic copper foil which is used as a current collector for a lithium secondary battery. The electrolytic copper foil is an electrolytic copper foil which is used as a current collector for a lithium secondary battery and has an X- The half-width of the peak curve with respect to the (111) plane appearing in the graph of the intensity of the X-ray is 0.08 or more and 0.15 or less.