FUEL CELL SEPARATOR MATERIAL, AND FUEL CELL STACK USING THE SAME

摘要

Disclosed are: a separator material for fuel cells, which has excellent corrosion resistance even in cases when an Au plating layer formed on the surface of a base is thin; and a fuel cell stack which uses the separator material for fuel cells. Specifically disclosed is a separator material for fuel cells, wherein an Au plating layer is formed on the surface of a metal base, said Au plating layer having a thickness of 2-20 nm and an arithmetic surface roughness (Ra) of 0.5-1.5 nm as determined within crystal grains of the metal base by an atomic force microscope.