Patent ID: 6933070

Claim:
A conductive separator plate for a polymer electrolyte fuel cell which comprises a cell stack comprising a plurality of membrane electrode assemblies and a plurality of conductive separator plates that are stacked alternately, each of said membrane electrode assemblies comprising a hydrogen-ion conductive polymer electrolyte membrane, and an anode and a cathode sandwiching said polymer electrolyte membrane, said conductive separator plate being formed of a molded plate comprising a carbon powder and a binder, said conductive separator plate having a main portion which is raised from a peripheral portion which surrounds said main portion, said main portion being in contact with the anode or the cathode and having a gas flow path for supplying a fuel gas to the anode or having a gas flow path for supplying an oxidant gas to the cathode, wherein said gas flow path is in communication with one or more manifold apertures in said peripheral portion, and wherein the entire peripheral portion surrounding the main portion is lower than the main portion.