Patent ID: 7790326

Claim:
A fuel cell comprising a unit cell, said unit cell including an electrolyte electrode assembly and separators sandwiching said electrolyte electrode assembly, said electrolyte electrode assembly including electrodes, and an electrolyte interposed between said electrodes, a reactant gas passage extending through said separators for allowing at least one of a fuel gas and an oxygen-containing gas as a reactant gas to flow through said reactant gas passage, a reactant gas flow field being formed in one of said separators for allowing the reactant gas to flow along one electrode surface of said electrolyte electrode assembly, wherein the one of said separators has a channel unit connecting said reactant gas passage and said reactant gas flow field; and said channel unit includes a first opening extending through the one of said separators at a position near said reactant gas passage for allowing the reactant gas to flow through said first opening, and a second opening extending through the one of said separators at a position near said reactant gas flow field for allowing the reactant gas to flow through said second opening, wherein a channel connecting said reactant gas passage and said first opening from one electrode surface of said electrolyte electrode assembly, and a connection channel connecting said first opening and said second opening on a surface opposite to the one electrode surface are provided.