TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The tungsten-containing carbonyl complex comprises tungsten hexacarbonyl. The platinum carbonyl complex and the tungsten carbonyl complex are contacted together in an organic solvent. The support material comprises at least one element consisting of a high surface area carbon black, an alumina support material or a zirconia support material. The mixture and the support material are heated to a temperature of 500-800 degrees C in a reducing atmosphere. The mixture and the support material are heated to a temperature of 700 degrees C. The metal composition comprises particles with average particle sizes of 1-4 nm. The metal composition comprises particles with average particle sizes of 1.4-2.8 nm. The metal composition comprises platinum present in an atomic percentage of 20-95 (preferably 30-45)% and tungsten present in an atomic percentage of 5-80 (preferably 55-70)%.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The organic solvent comprises at least one element consisting of alcohol, methanol, ethanol or tetrahydrofuran. EXAMPLE - Chloroplatinic acid was dissolved in tetrahydrofuran (THF). The obtained solution was purged with carbon monoxide (50 cc/minutes) for 24 hours with constant stirring. The color of the solution slowly changed from orange to dark green during the carbon monoxide purging. At the end of 24 hours, the platinum carbonyl complex (a dark colored solution) was obtained. Tungsten hexacarbonyl was dissolved in THF and added to the THF solution of the previously prepared platinum carbonyl complex with constant stirring. The resultant mixture was further purged with carbon monoxide for another 2 hours. An appropriate amount of high surface area carbon black, dispersed in THF, was added to the above mixture. The total metal loading, platinum and tungsten combined, on the carbon support was maintained at 40 wt.%. The final mixture was slowly dried by blowing carbon monoxide and nitrogen across the surface of the solution with constant stirring overnight. The dried powder was then collected, loaded in a ceramic boat and heated at temperatures of 500-800 degrees C for 2 hours under a hydrogen/nitrogen mixture (1:10 vol/vol.). The powders were worked-up to afford the electrocatalyst.