| 摘要 |
PROBLEM TO BE SOLVED: To improve airtightness, forming workability, conducting performance, and cost by using a separator prepared by forming a metal film containing dispersed conductive ceramics whose resistivity is the specified value or less on the surface of a substrate made of stainless steel or metal containing the specified weight percent or more of at least one metal selected from aluminum and titanium. SOLUTION: A separator for constituting a solid polymer electrolyte fuel cell is prepared by forming a metal film containing dispersed conductive ceramics on the surface of a substrate 1 made of stainless steel or metal containing 80 wt.% or more at least one metal selected from aluminum and titanium. The resistivity of the conductive ceramics is 3×10<-4> Ω.cm or less. The conductive ceramics has high corrosion resistance even when exposed to steam atmosphere in the operation temperature range of the fuel cell, the separator is hardly corroded, and the fuel cell is stably operated for a long time. |
