Separator for fuel cell and method for producing the same

Details Separator for fuel cell and method for producing the same Separator for fuel cell and method for producing the same

H - Electricity

01

M

H01M 2/14 (2006.01) C25D 5/36 (2006.01) H01M 8/02 (2006.01)

Patent

CA 2403882

A separator for a fuel cell comprising a gold covering layer formed on the surface of stainless steel plate a method for producing a separator, in which exfoliation and fracture of the gold covering layer can be prevented and corrosion resistance and durability can be obtained, are provided. Voids are formed by intergranular corrosion treatment at a surface of the stainless steel plate, and the gold covering layer is formed so as to be embedded in the voids. Limit value of radius of curvature in bends in which exfoliations or fractures in the gold covering layer is formed can be reduced by satisfying the equation 0.2<=4/d/L<=80 wherein L(µm) is the average grain size of the surface of stainless steel plate, and d(µm) is the thickness of the gold covering layer.

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