POLYMER ELECTROLYTE FUEL CELL

摘要

Disclosed is a fuel cell having improved thermal efficiency wherein a sufficiently humidified reaction gas can be stably supplied by preventing heat dissipation from end plates through a physical contact between supply and discharge pipes of the reaction gas and the end plates. Specifically disclosed is a fuel cell comprising a stack of single cells and a pair of end plates sandwiching and holding the stack via springs. Supply pipes and discharge pipes for supplying and discharging a fuel gas, an oxidant gas and a cooling fluid are arranged at the end portions of the stack in such a manner that the pipes extend in the direction generally parallel to the normal line of the major surfaces of the single cells. The end plates are provided with notch portions in the positions corresponding to the supply pipes and discharge pipes for allowing the supply and discharge pipes to come out therefrom.