H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 8/06 (2006.01)
Patent
CA 2378239
The invention relates to a fuel cell system with integrated gas purification and to a method of purifying the reformer gas of carbon monoxide. According to the inventive method, either an exhaust gas catalyst is mounted upstream and/or downstream of one or more fuel cell stacks of a fuel cell system and/or at least one fuel cell of a fuel cell stack is at least briefly operated as a purification cell. Said cell is operated at a voltage that is at least reduced so that the reaction of hydrogen is inhibited and the electrochemical oxidation of carbon monoxide is promoted.
L'invention concerne une installation à piles à combustible à purification de gaz intégrée et un procédé servant à purifier le gaz réformé du monoxyde de carbone. Selon l'invention, un catalyseur de gaz d'échappement est monté en amont ou en aval d'un ou de plusieurs empilements de piles à combustible d'une installation à piles à combustible ou au moins une pile à combustible d'un empilement de piles à combustible fonctionne au moins momentanément comme cellule de purification, cette cellule étant soumise à une tension au moins réduite, de sorte que la réaction de l'hydrogène est inhibée et que l'oxydation électrochimique du monoxyde de carbone est favorisée.
Buchner Peter
Gebhardt Ulrich
Luft Gunter
Mund Konrad
Waidhas Manfred
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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