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Electrocatalysts having platium monolayers on palladium, palladium alloy, and gold alloy core-shell nanoparticles, and uses thereof

United States Patent

December 21, 2010
View the Complete Patent at the US Patent & Trademark Office
Brookhaven National Laboratory - Visit the Office of Technology Commercialization and Partnerships Website
Electrocatalysts having Platinum Monolayers on Palladium, Palladium Alloy, and Gold Alloy Core-Shell Nanoparticles, and Uses Thereof
The invention relates to platinum-coated particles useful as fuel cell electrocatalysts. The particles are composed of a noble metal or metal alloy core at least partially encapsulated by an atomically thin surface layer of platinum atoms. The invention particularly relates to such particles having a palladium, palladium alloy, gold alloy, or rhenium alloy core encapsulated by an atomic monolayer of platinum. In other embodiments, the invention relates to fuel cells containing these electrocatalysts and methods for generating electrical energy therefrom.
Adzic; Radoslav (Setauket, NY), Mo; Yibo (Naperville, IL), Vukmirovic; Miomir (Port Jefferson Station, NY), Zhang; Junliang (Rochester, NY)
Brookhaven Science Associates, LLC (Upton, NY)
11/ 156,038
June 20, 2005
This invention was made with Government support under contract number DE-AC02-98CH10886, awarded by the U.S. Department of Energy. The Government has certain rights in the invention.