Patent ID: 7413825
Filing Date: 2008-08-19
Classification: H01M,Y02E

Abstract:
1. A fuel cell formed by stacking an electrolyte electrode assembly and a pair of separators alternately, said electrolyte electrode assembly including a pair of electrodes and an electrolyte interposed between said electrodes, wherein a reactant gas supply passage and a reactant gas discharge passage extend through said separators in a stacking direction for at least supplying an oxygen-containing gas or a fuel gas as a reactant gas to a reactant gas flow field formed in a separator surface facing said membrane electrode assembly and discharging said reactant gas from said reactant gas flow field; and wherein at each corner of the separator, there is either one reactant gas supply passage or one reactant gas discharge passage, wherein each of said passages includes first and second straight sections elongated along two sides at each corner of said separator, respectively.