Patent ID: 6103412
Filing Date: 2000-08-15
Classification: H01M,Y02E,Y02T

Abstract:
A polymer electrolyte fuel cell comprising;a polymer electrolyte membrane,an anode catalytic electrode disposed at one side the polymer electrolyte membrane for receiving a fuel gas,a humidifier for supplying said fuel gas being supplied to the anode catalytic electrode,a cathode catalytic electrode disposed at another side of the polymer electrode for receiving an oxidation gas,a supply means for supplying said oxidation gas being supplied to the cathode catalytic electrode without a humidifier, and,a temperature control means for controlling a fuel cell operating temperature; so that a reduction amount of water from the cathode catalytic electrode together with the oxidation gas adds a first water amount increased at the cathode catalytic electrode by being transported from the anode catalytic electrode through the polymer electrode membrane during a redox reaction of the fuel cell and a second water amount produced in the cathode catalytic electrode by an oxidation reaction in the cathode catalytic electrode.