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Issue 6, 2010
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Nanostructured Pt-alloy electrocatalysts for PEMfuelcelloxygenreduction reaction

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Abstract

In this critical review, we present the current technological advances in proton exchange membrane (PEM) fuel cell catalysis, with a focus on strategies for developing nanostructured Pt-alloys as electrocatalysts for the oxygen reduction reaction (ORR). The achievements are reviewed and the major challenges, including high cost, insufficient activity and low stability, are addressed and discussed. The nanostructured Pt-alloy catalysts can be grouped into different clusters: (i) Pt-alloy nanoparticles, (ii) Pt-alloy nanotextures such as Pt-skins/monolayers on top of base metals, and (iii) branched or anisotropic elongated Pt or Pt-alloy nanostructures. Although some Pt-alloy catalysts with advanced nanostructures have shown remarkable activity levels, the dissolution of metals, including Pt and alloyed base metals, in a fuel cell operating environment could cause catalyst degradation, and still remains an issue. Another concern may be low retention of the nanostructure of the active catalyst during fuel cell operation. To facilitate further efforts in new catalyst development, several research directions are also proposed in this paper (130 references).

Graphical abstract: Nanostructured Pt-alloy electrocatalysts for PEM fuel cell oxygen reduction reaction

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Publication details

The article was received on 25 Jun 2009 and first published on 25 Mar 2010


Article type: Critical Review
DOI: 10.1039/B912552C
Chem. Soc. Rev., 2010,39, 2184-2202

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    Nanostructured Pt-alloy electrocatalysts for PEM fuel cell oxygen reduction reaction

    Y. Bing, H. Liu, L. Zhang, D. Ghosh and J. Zhang, Chem. Soc. Rev., 2010, 39, 2184
    DOI: 10.1039/B912552C

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