A fuel cell gas separator

H - Electricity – 01 – M

Patent

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Details

H01M 8/24 (2006.01) H01M 2/16 (2006.01) H01M 8/12 (2006.01)

Patent

CA 2375686

A fuel cell gas separator member (10) comprises a layer (22) of copper or copper-based alloy having a layer (29) of oxidation-resistant material such as Al2O3 on the cathode side (30). A protective layer (31) may also be provided on the anode-side (26) of the copper or copper-based alloy layer. The copper-based alloy may be aluminium bronze in which case the oxidation-resistant layer may form automatically. Alternatively, the copper or copper-based alloy layer (22) may be wrapped in a foil (29, 31) of heat resistant steel. Other possibilities are disclosed.

La présente invention concerne un élément (10) séparateur de gaz pour pile à combustible comprenant une couche (22) de cuivre ou d'un alliage à base de cuivre munie d'une couche (29) d'une matière inoxydable telle que l'Al2O3 du côté cathode (30). On peut également ajouter une couche protectrice (31) du côté anode (26) de la couche de cuivre ou d'alliage à base de cuivre. L'alliage à base de cuivre peut être un bronze d'aluminium, auquel cas la couche inoxydable peut se former automatiquement. Dans un autre mode de réalisation, la couche (22) de cuivre ou d'alliage à base de cuivre peut être entourée d'une feuille (29,31) d'un acier résistant aux hautes températures. L'invention se rapporte également à d'autres possibilités.

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