Process for operating a PEM fuel cell installation
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United States of America Patent
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May 30, 2000
Issued Date -
N/A
app pub date -
Dec 10, 1998
filing date -
Jun 10, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A process for operating a PEM fuel cell installation includes providing at least one PEM fuel cell module having an inlet valve for hydrogen H.sub.2 and an inlet valve for oxygen O.sub.2. In order to switch off the PEM fuel cell module, the oxygen O.sub.2 inlet valve is closed in a first step, and the hydrogen H.sub.2 inlet valve is closed in a second step when a predetermined oxygen O.sub.2 partial pressure at a cathode part of the PEM fuel cell module is reached. Reliable operation of the PEM fuel cell installation is guaranteed by this measure.
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