Efficient Oxygen Reduction Fuel Cell Electrocatalysis on Voltammetrically Dealloyed Pt–Cu–Co Nanoparticles

Authors

  • Ratndeep Srivastava,

    1. Department of Chemical and Biomolecular Engineering, University of Houston, 4800 Calhoun Road Eng Bldg 1 S226, Houston, TX, USA, Fax: (+1) 713-743-4323
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  • Prasanna Mani Dr.,

    1. Department of Chemical and Biomolecular Engineering, University of Houston, 4800 Calhoun Road Eng Bldg 1 S226, Houston, TX, USA, Fax: (+1) 713-743-4323
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  • Nathan Hahn,

    1. Department of Chemical and Biomolecular Engineering, University of Houston, 4800 Calhoun Road Eng Bldg 1 S226, Houston, TX, USA, Fax: (+1) 713-743-4323
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  • Peter Strasser Prof.

    1. Department of Chemical and Biomolecular Engineering, University of Houston, 4800 Calhoun Road Eng Bldg 1 S226, Houston, TX, USA, Fax: (+1) 713-743-4323
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  • This work was supported by the Department of Energy (Lab04-20) and by a TcSUH seed grant. Acknowledgement is also made to the Donors of the American Chemical Society Petroleum Research Fund for partial support of this research (grant no. 44165).

Abstract

original image

Getting rid of copper: A class of ternary Pt–Cu–Co electrocatalysts for the reduction of oxygen in polymer electrolyte membrane fuel cells shows unprecedented activity improvements over state-of-the-art Pt catalysts. The active phase of the catalysts is synthesized by selective electrochemical dissolution (dealloying, see picture) of Cu-rich alloy-particle precursors, resulting in Pt-enriched core–shell particles.

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