Patent ID: 7226688
Filing Date: 2007-06-05
Classification: H01M,Y02E

Abstract:
1. A fuel cell comprising: a fuel cell unit including an anode electrode, a cathode electrode, and an electrolyte interposed between said anode electrode and said cathode electrode; and separators for supporting said fuel cell unit interposed therebetween, said fuel cell further including: communication holes forming a manifold penetrating through said separator, said manifold allowing a fuel gas or an oxygen-containing gas to flow therethrough; at least one gas flow passage provided on an electrode power-generating surface of said separator, for supplying said fuel gas or said oxygen-containing gas to said anode electrode or said cathode electrode; and at least one connecting flow passage penetrating through said separator, said connecting flow passage being different than said manifold, said connecting flow passage connecting said communication hole on a surface opposite to said electrode power-generating surface and said gas flow passage on said electrode power-generating surface, wherein said separator has a buffer on at least one of an inlet side and an outlet side of said gas flow passage, and said buffer is connected to said connecting flow passage.