NANOCOMPOSITE CATALYST MATERIALS COMPRISING CONDUCTIVE SUPPORT (CARBON), TRANSITION METAL COMPOUND, AND METAL NANOPARTICLES

摘要

The present invention is generally directed to a nanocomposite catalyst material for electrochemical devices such as fuel cells, comprising metal nanoparticles impregnated on a conductive support that is coated with a transition metal compound. The metal nanoparticles may comprise platinum; the metal phosphate may comprise tantalum oxyphosphate, niobium oxyphosphate, tantalum oxide, niobium oxide, or any combination thereof; and the conductive support may comprise carbon. In addition, the present invention provides for a method of making the catalyst material.