Fuel cell system and shutdown method for a fuel cell system
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United States of America Patent
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Issued Date -
Mar 9, 2006
app pub date -
Jul 26, 2005
filing date -
Sep 3, 2004
priority date (Note) -
Abandoned
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Abstract
A fuel cell system having at least one fuel cell, which possesses one anode area as well as one cathode area that is separated from the anode area by an electrolyte. The anode area and the cathode area each contain one catalyst for the catalytic conversion of reactants being supplied to the fuel cell. During downtime periods of the fuel cell, the anode area is filled with air or oxygen. Provided in the area of an inlet and/or in the area of an outlet of the anode area is an additional catalyst for the catalytic conversion of hydrogen with oxygen, which is set up to catalytically convert hydrogen diffusing towards the anode area during downtime periods of the fuel cell when the anode area is filled with air or oxygen.
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