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J Am Chem Soc. 2010 Jan 27;132(3):906-7. doi: 10.1021/ja905850c.

Intermetallics as novel supports for Pt monolayer O2 reduction electrocatalysts: potential for significantly improving properties.

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  • 1Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA.


We report on a new class of core-shell electrocatalysts for the oxygen-reduction reaction. These electrocatalysts comprise a Pt monolayer shell and ordered intermetallic compounds cores and have enhanced activity and stability compared with conventional ones. These advantages are derived from combining the unique properties of Pt monolayer catalysts (high activity, low metal content) and of the intermetallic compounds (high stability and, possibly, low price). This method holds excellent potential for creating efficient fuel cell electrocatalysts.

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