Patent ID: 9023547
Filing Date: 2015-05-05
Classification: H01M,Y02E

Abstract:
1. A fuel cell formed by stacking electrolyte electrode assemblies and separators alternately, said electrolyte electrode assemblies each including an anode, a cathode, and an electrolyte interposed between said anode and said cathode, each of the separators including: a sandwiching section for sandwiching the electrolyte electrode assembly, the sandwiching section having a fuel gas channel for supplying a fuel gas along an electrode surface of the anode provided on one surface of the separator and an oxygen-containing gas channel for supplying an oxygen-containing gas along an electrode surface of the cathode provided on another surface of the separator, separately; a bridge connected to the sandwiching section, the bridge having a reactant gas supply channel for supplying the fuel gas to the fuel gas channel or supplying the oxygen-containing gas to the oxygen-containing gas channel; and a reactant gas supply section connected to the bridge, a reactant gas supply passage for supplying the fuel gas or the oxygen-containing gas to the reactant gas supply channel extending through the reactant gas supply section in a stacking direction, wherein in the sandwiching section, a plurality of projections are arranged in a zigzag pattern in a direction in which the bridge extends such that adjacent three projections are arranged at respective vertices of a virtual equilateral triangle; the projections include first projections protruding toward the fuel gas channel to contact the anode and second projections protruding toward the oxygen-containing gas channel to contact the cathode; and the number of the first projections and the second projections that are arranged at a same phase in the stacking direction is larger than the number of the first projections and the second projections that are arranged in different phases in the stacking direction, wherein: