Phosphoric acid fuel cell passivation with natural gas
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United States of America Patent
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May 30, 1995
Grant Date -
N/A
app pub date -
Mar 17, 1994
filing date -
Mar 17, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The anodes of fuel cells in a fuel cell stack are passivated during no load, hot-hold periods by directing a stream of desulfurized natural gas through the anode side of the cells in the stack. The cell voltage is thus maintained below 800 millivolts, preferably between 300 and 500 millivolts, during such periods.
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