| abstract |
Provided is a stainless steel foil for external use of a battery, which is excellent in adhesion to a resin after a cold shock and after immersion in an electrolytic solution without special treatment such as corona discharge. The stainless steel foil for battery external use has an oxide film (1a) having a thickness of 2 nm or more and containing 35 mol% or more of a metallic element present as a hydroxide and 40 mol% or less of SiO 2 , and has an arithmetic mean roughness in a direction orthogonal to the rolling direction (Ra) of not less than 0.02 μm and less than 0.1 μm. |