CPC H01M 4/921 (2013.01) [H01M 4/8828 (2013.01); H01M 4/8882 (2013.01); H01M 4/925 (2013.01); H01M 2004/8684 (2013.01)] | 6 Claims |
1. An electrocatalyst material for an anode catalyst, wherein the electrocatalyst material comprises a support material, wherein the support material consists of carbon and comprises a plurality of individual support particles or aggregates, wherein the individual support particles or aggregates have a mean particle or aggregate size of 5-500 nm, wherein each individual support particle or aggregate is in direct contact with and has dispersed thereon separate (i) first particles and (ii) second particles, and wherein the first particles are separate from the second particles:
(i) the first particles consist of Pt;
(ii) the second particles consist essentially of a second metal
wherein the second metal is Ir; and
each individual support particle or aggregate of the support material of the electrocatalyst material has dispersed thereon only the said first and second particles.
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