Patent ID: 7521143

Claim:
A polymer electrolyte fuel cell comprising: a fuel cell stack comprising a plurality of conductive separators and a plurality of membrane electrode assemblies that are stacked with one of said conductive separators interposed therebetween, each of said membrane electrode assemblies comprising a polymer electrolyte membrane, and an anode and a cathode sandwiching said polymer electrolyte membrane; a means for supplying a fuel gas to said anode; and a means for supplying an oxidant gas to said cathode, wherein said plurality of conductive separators comprise at least one separator comprising: a fuel gas inlet-side manifold aperture; a fuel gas outlet-side manifold aperture; a gas flow channel for supplying the fuel gas to said anode which is formed on an anode-side of the separator; an inlet-side through hole and an outlet-side through hole penetrating the separator which are formed at an inlet-side end and an outlet-side end of said gas flow channel for fuel gas; and an inlet-side connection groove and an outlet-side connection groove for connecting said inlet-side and outlet-side through holes with said fuel gas inlet-side manifold aperture and said fuel gas outlet-side manifold aperture, respectively, which are formed on a cathode-side of the separator.