The invention relates to methods and structures of metal particles on a support material, including platinum-containing nanoparticles on a carbon support. Such materials can be used as electrocatalysts, for example as improved electrocatalysts in polymer electrolyte membrane fuel cells (PEM-FCs).
STATEMENT OF GOVERNMENT INTEREST
 This invention was made under a CRADA (SC04/01686) between Toyota Technical Center, U.S.A. Inc. (now Toyota Motor Engineering & Manufacturing North America, Inc.) and Sandia Corporation, Operator of Sandia National Laboratories, operated for the United States Department of Energy. The government has certain rights in this invention.