Fuel cell stack and method of fastening the same

摘要

A fuel cell stack (10) having unit cells (12) and separators (14), in which each unit cell comprises a solid polymer electrolyte (124) membrane having a pair of electrode catalysts (128a,128b) attached on both surfaces, and a pair of collectors (110,112), each made of a rigid body, being in contact with respective electrode catalysts, and each of the separators comprises a pair of pressure generating plates (22,24) defining therebetween a pressure chamber (104) to which a pressurized fluid is introduced, the pressure generating plates being deformed by the pressurized fluid and pressed against the adjacent respective collectors.