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Method for starting proton exchange membrane fuel cell of fuel cell system to provide electric power to mobile system e.g. watercraft, involves supplying cathode side with air, and starting removal of electric power from fuel cell
Method for starting proton exchange membrane fuel cell of fuel cell system to provide electric power to mobile system e.g. watercraft, involves supplying cathode side with air, and starting removal of electric power from fuel cell
The method involves supplying an anode side with hydrogen from a humidifier (7) by opening a hydrogen valve (11). Electrolysis of water present in a fuel cell (3) is started as electrolyzer by operation of the fuel cell. A cathode side is supplied with air, and removal of electric power from the fuel cell is started. The electrolysis is started after a preset hydrogen amount flows into the anode side. The electrolysis is performed until oxygen concentration in an anode chamber (4) of the fuel cell is lowered below a preset threshold value.
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