Provided is a copper foil for a negative electrode current collector of secondary battery, wherein: roughening treatment is performed to both front and rear surfaces of a rolled copper alloy foil; an average surface roughness Ra of both the front and rear ...

The invention relates to a method of manufacturing a steel sheet for a battery case, which method comprises the steps of (a) providing a steel sheet suitable for use in a battery case, (b) pre-treating of the surface of the steel sheet, and (c) plating a m...

A battery case which has a high quality and is suitable for continuous forming and a surface-treated steel sheet which can be used suitably for manufacturing the battery case. The battery case is manufactured by forming, by the DI or DTR forming method, a ...