Platinum- and platinum alloy-coated palladium and palladium alloy particles and uses thereof
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United States of America Patent
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Apr 6, 2010
Grant Date -
Jun 22, 2006
app pub date -
Dec 22, 2004
filing date -
Dec 22, 2004
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Abstract
The present invention relates to particle and nanoparticle composites useful as oxygen-reduction electrocatalysts. The particle composites are composed of a palladium or palladium-alloy particle or nanoparticle substrate coated with an atomic submonolayer, monolayer, bilayer, or trilayer of zerovalent platinum atoms. The invention also relates to a catalyst and a fuel cell containing the particle or nanoparticle composites of the invention. The invention additionally includes methods for oxygen reduction and production of electrical energy by using the particle and nanoparticle composites of the invention.
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