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|1. (WO2018138989) METALLIC FOIL MANUFACTURING METHOD AND CATHODE FOR MANUFACTURING METALLIC FOIL|
|Title:||METALLIC FOIL MANUFACTURING METHOD AND CATHODE FOR MANUFACTURING METALLIC FOIL|
Provided are a metallic foil manufacturing method and a cathode for manufacturing a metallic foil with which a metallic film electrodeposited by electrolysis on an electrodeposition surface of a cathode can be easily peeled off and a difference in the surface roughness between a peeling surface and a free surface of a metallic foil obtained upon peeling of the metallic film can be reduced. In the metallic foil manufacturing method, a metallic film electrodeposited by electrolysis on the surface of an electrodeposition surface of a cathode is peeled off to form a metallic foil, and the electrodeposition surface used therein is obtained by subjecting a roughened surface, which results from roughening a smoothed surface made of titanium or titanium alloy using a blast treatment, etc., to an oxidation treatment selected from thermal oxidation, anodic oxidation (preferably anodic oxidation carried out while moving the anodic oxidation solution), or a combination treatment of thermal oxidation and anodic oxidation so that the electrodeposition surface has an oxidation layer with a thickness of 30 to 250 nm on the uppermost layer and has a surface roughness RZJIS of 4 to 10 μm.