COPPER FOIL, ELECTRODES COVERING THEM, SECONDARY BATTERIES COVERING THEM, AND METHODS OF MANUFACTURING THERE

Abstract

One embodiment of the present invention provides a copper foil having a first surface and a second surface, and includes a copper layer having a dull surface facing the first surface and a shiny surface facing the second surface; and a protective layer arranged on said copper layer, wherein said copper foil has a specular reflectance of 1.0 to 30.0 on the first surface. Specular reflectance refers to a value obtained by subtracting a brightness index measured in the specular component excluded (SCE) mode from a brightness index measured in the specular component included (SCI) mode, and is measured using a colorimeter.