Fuel cell system

H - Electricity – 01 – M

Patent

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Details

H01M 8/24 (2006.01) H01M 4/00 (2006.01) H01M 4/90 (2006.01) H01M 4/92 (2006.01)

Patent

CA 2568118

A fuel cell system comprising one or more fuel cell stacks is disclosed. The fuel cell stacks) comprise a first group of membrane electrode assemblies and a second group of membrane electrode assemblies, wherein the first and second groups of membrane electrode assemblies are connected in series such that a feed stream supplied to the first group is subsequently supplied to the second group. The anodes of the membrane electrode assemblies of the first group comprise an electrocatalyst for the electrochemical- oxidation of carbon monoxide and can reduce the concentration of carbon monoxide in a feed stream comprising carbon monoxide before it is supplied to the membrane electrode assemblies of the second group.

Cette invention concerne un système de piles à combustible, comprenant un ou plusieurs empilements de piles à combustible. Le ou les empilements de piles à combustible sont constitués par un premier groupe d'ensembles électrodes à membrane et par un second groupe d'ensembles électrodes à membrane, qui sont l'un et l'autre connectés en série, de telle sorte qu'un premier flux d'alimentation fourni au premier groupe est ensuite fourni au second groupe. Les anodes des ensembles électrodes à membrane du premier groupe comprennent un électrocatalyseur pour l'oxydation électrochimique du monoxyde de carbone et elles permettent de réduire la concentration de monoxyde de carbone dans un flux d'alimentation comprenant du monoxyde de carbone, avant que celui-ci soit fourni aux ensembles électrode à membrane du second groupe.

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