초록 ▼

The present invention provides fuel cell electrode catalysts comprising alternating platinum-containing layers and layers containing suboxides of a second metal, where the catalyst demonstrates an early onset of CO oxidation. Preferred second metals are selected from the group consisting of Group II

The present invention provides fuel cell electrode catalysts comprising alternating platinum-containing layers and layers containing suboxides of a second metal, where the catalyst demonstrates an early onset of CO oxidation. Preferred second metals are selected from the group consisting of Group IIIb metals, Group IVb metals, Group Vb metals, Group VIb metals and Group VIIb metals, most preferably Ti, Ta, W and Mo. The present invention additionally provides methods of making such catalysts, preferably by alternate deposition of platinum and second metals in the presence of substoichiometric amounts of gaseous oxygen.

대표청구항 ▼

1. A catalyst in a fuel cell electrode, said catalyst comprising alternating layers of a first catalyst material containing Pt and a second catalyst material containing at least one suboxide of a second metal which is not Pt, wherein said catalyst demonstrates a pre-peak of CO oxidation occurring at

1. A catalyst in a fuel cell electrode, said catalyst comprising alternating layers of a first catalyst material containing Pt and a second catalyst material containing at least one suboxide of a second metal which is not Pt, wherein said catalyst demonstrates a pre-peak of CO oxidation occurring at lower potential than that of the Pt CO oxidation peak.