초록

An electrocatalyst material for use in an acid electrolyte environment, comprising platinum or a platinum alloy supported on a conductive support, and gold, gives unexpectedly improved performance over similar electrocatalysts without gold.

대표청구항 ▼

[ We claim:] [1.] An electrocatalyst material for use in an acid electrolyte environment, comprising platinum alloyed by heat treatment to effect a change in platinum crystal lattice dimensions with at least one alloying element, and gold, said alloyed platinum and said gold being supported on a con

[ We claim:] [1.] An electrocatalyst material for use in an acid electrolyte environment, comprising platinum alloyed by heat treatment to effect a change in platinum crystal lattice dimensions with at least one alloying element, and gold, said alloyed platinum and said gold being supported on a conductive support, the atomic ratio of platinum to the alloying element being in the range 80:20 to 20:80, and wherein the gold is present in a loading of 0.0001 up to but not including 3 wt % of the total catalyst weight.