FUEL CELL WITH POLYMER ELECTROLYTE

摘要

A fuel cell ( 1 ) is constituted by stacking membrane electrode assemblies ( 2 ) and separators ( 3 ), wherein fuel gas passages ( 16 ), oxidizing gas passages ( 17 ) and coolant passages ( 9 ), which are formed by the separators ( 3 ), are arranged in parallel along the outer surfaces of gas diffusion layers ( 6 A) and ( 6 C) of the membrane electrode assemblies ( 2 ). With such a constitution, a thickness dimension of the separators ( 3 ) can be reduced, and with respect to a stacking direction of the fuel cell stack, the number of stacked unit cells can be increased in the same dimensions as that of the conventional fuel cell stack. Therefore, a fuel cell stack with a high output density can be obtained.