H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 8/10 (2006.01)
Patent
CA 2374399
An electrode-membrane combination for use in a fuel cell and providing improved power outputs and resistance to poisoning. Multiple embodiments are described which generally involve use of a vapor deposited zone or layer of one or more catalytically active metals. Vapor deposition can be carried out by, for example, sputtering or physical vapor deposition. An electrode- membrane combination comprising: at least one reactant diffusive, electronically conductive electrode comprising at least one first catalytically active metal and at least one ionically conductive polymer; and at least one ionically conductive membrane contacting the electrode to form an electrode-membrane interfacial region, wherein the interfacial region comprises at least one zone comprising at least two different second catalytically active metals, e.g. Platinum and Ruthenium and having a zone thickness of about 3 angstroms to about 5,000 angstroms is disclosed.
L'invention concerne une combinaison électrode/membrane utilisée dans une pile à combustible et fournissant une puissance de sortie améliorée tout en assurant une résistance à l'empoisonnement. Selon de multiples modes de réalisation, on utilise une zone déposée par vapeur ou à une couche d'un ou plusieurs métaux actifs sur le plan catalytique. Le dépôt par évaporation sous vide peut s'effectuer par vaporisation ou par dépôt physique sous vide.
Arps James H.
Cavalca Carlos
Murthy Mahesh
Gore Enterprise Holdings Inc.
Gowling Lafleur Henderson Llp
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