Patent ID: 8092951

Claim:
A method of manufacturing a fuel cell, comprising: forming a first manifold opening in a metallic first separator disposed at a first side of an electrolyte membrane electrode assembly, the electrolyte membrane electrode assembly including electrode catalytic layers at both sides of an electrolyte membrane, and the first manifold opening defining a gas manifold distributing a gas along a stacked direction of the fuel cell; forming a second manifold opening in a metallic second separator disposed at a second side of the electrolyte membrane electrode assembly, the second manifold opening having an opening area smaller than that of the first manifold opening, and the second manifold opening being in fluid communication with the first manifold opening; and welding an inner peripheral edge of the first manifold opening to the second separator to form a manifold welding portion being disposed at the inner peripheral edge of the first manifold opening and disposed surrounding and being spaced from a peripheral edge of the second manifold opening.