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  • Title: Pt monolayer on porous Pd-Cu alloys as oxygen reduction electrocatalysts.
    Author: Shao M, Shoemaker K, Peles A, Kaneko K, Protsailo L.
    Journal: J Am Chem Soc; 2010 Jul 14; 132(27):9253-5. PubMed ID: 20565078.
    Abstract:
    We demonstrate the synthesis of a core-shell catalyst consisting of a Pt monolayer as the shell and porous/hollow Pd-Cu alloy nanoparticles as the core. The porous/hollow Pd-Cu nanoparticles were fabricated by selectively dissolving a less noble metal, Cu, using an electrochemical dealloying process. The Pt mass activity for the oxygen reduction reaction of a Pt monolayer deposited on such a porous core is 3.5 times higher than that of a Pt monolayer deposited on bulk Pd nanoparticles and 14 times higher than that of state-of-the-art Pt/C electrocatalysts.
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