Electrolytic copper foil and electrode and lithium-ion cell comprising the same

Abstract

Provided are an electrolytic copper foil, an electrode and a lithium-ion cell comprising the same. The electrolytic copper foil has a first surface and a second surface, which are analyzed by grazing incidence X-ray diffraction (GIXRD), and each have an intensity of a characteristic peak of (111) plane denoted by I1, an intensity of a characteristic peak of (200) plane denoted by I2, an intensity of a characteristic peak of (220) plane denoted by I3, an FWHM of the characteristic peak of (111) plane denoted by W1, and an FWHM of the characteristic peak of (200) plane denoted by W2. The first and second surfaces each have a ratio of (I1+I2)/(I1+I2+I3) of 0.83 or more and a value of (W1+W2) of 0.80 or less. By controlling the features, it can improve the corrosion resistance of the electrolytic copper foil and further increase the safety of the lithium-ion cell.

Dependencies are inferred from the claim text.