METHOD FOR OPERATING A FUEL CELL AND A FUEL CELL STACK

摘要

There is described a method of operating a fuel cell comprising: inputting an anode reactant into an anode inlet and a cathode reactant into a cathode inlet of the fuel cell; flowing the anode reactant and the cathode reactant on respective flow field plates over a network of flow channels bounded by a series of passages; decreasing at least one of anode reactant water partial pressure and cathode reactant water partial pressure to adjust a water transfer rate from a cathode to an anode across a membrane; chemically reacting the anode reactant and the cathode reactant on catalysts in order to generate an electrical current; and outputting un-reacted anode reactant and un-reacted cathode reactant through an anode outlet and a cathode outlet, respectively.