Methods of operating fuel cells having closed reactant supply systems
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United States of America Patent
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Dec 26, 2006
Issued Date -
N/A
app pub date -
Mar 5, 2004
filing date -
Mar 7, 2003
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Abstract
A fuel cell system is operated with the fuel supply pressure greater than the oxidant supply pressure to the fuel cell. This gives improved performance particularly when the fuel cell system is closed on the fuel side. The magnitude of fuel overpressure may be varied in accordance with variations in the fuel cell operating parameters.
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