| abstract |
In the polymer electrolyte membrane fuel cell according to the present invention, the anode separator and the cathode separator are formed to have inclined surfaces, respectively, and the depth of the fuel passage of the anode separator and the air passage of the cathode separator decrease from the inlet side to the outlet side, respectively. Since the cross-sectional area compared to the same flow rate is reduced to increase the flow rate, the removal of water droplets within the fuel flow path is facilitated and gas diffusion into the polymer electrolyte membrane occurs well, thereby improving performance. In addition, since the anode separator and the cathode separator are each formed to have an inclined surface, the size of the polymer electrolyte membrane is maintained so that the gas diffusion area is maintained, but the volume of the stack can be reduced. |