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The application of scanning electrochemical microscopy to the discovery of Pd–W electrocatalysts for the oxygen reduction reaction that demonstrate high activity, stability, and methanol tolerance

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Abstract

An array of Pd–W alloys was fabricated, and the electrocatalytic activity of the alloys for the oxygen reduction reaction (ORR) in acidic media was screened by scanning electrochemical microscopy. The Pd0.7W0.3 showed the highest activity for the ORR, close to that for Pd0.8Co0.2 and Pt. A Pd–W electrocatalyst loaded on carbon black was formed by the NaBH4-reduction method, exhibiting high activity and stability, suggesting that it is a good candidate for the proton exchange membrane fuel cell cathode.

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Acknowledgments

This work is supported by the National Science Foundation (CHE-1111518) and the International Cooperation Program for Excellent Lectures of 2008 by Shandong Provincial Education Department.

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Authors and Affiliations

  1. Center for Electrochemistry, Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, TX, 78712, USA

    Wenpeng Li, Fu-Ren F. Fan & Allen J. Bard

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  1. Wenpeng Li
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  2. Fu-Ren F. Fan
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  3. Allen J. Bard
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Correspondence to Allen J. Bard.

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Li, W., Fan, FR.F. & Bard, A.J. The application of scanning electrochemical microscopy to the discovery of Pd–W electrocatalysts for the oxygen reduction reaction that demonstrate high activity, stability, and methanol tolerance. J Solid State Electrochem 16, 2563–2568 (2012). https://doi.org/10.1007/s10008-012-1775-7

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  • DOI: https://doi.org/10.1007/s10008-012-1775-7

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