STAINLESS STEEL MATERIAL FOR A SEPARATOR OF A SOLID POLYMER FUEL CELL AND A SOLID POLYMER FUEL CELL USING THE SEPARATOR

摘要

Disclosed is a stainless steel material for separators of solid polymer fuel cells having excellent battery characteristics with little performance decrease during a long-time operation, which does not deteriorate the corrosion resistance of a stainless steel separator. The stainless steel material comprises a stainless steel matrix, an oxide film formed on the surface of the stainless steel matrix, a conductive layer formed on the surface of the oxide film and provided with a non-metallic conductive substance, and a conductive substance so arranged as to penetrate the oxide film and electrically connected to the stainless steel matrix and the conductive layer. A solid polymer fuel cell using the stainless steel material is also disclosed.