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A review of PEM fuel cell durability: Degradation mechanisms and mitigation strategies

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      Most cited references 114

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      Activity benchmarks and requirements for Pt, Pt-alloy, and non-Pt oxygen reduction catalysts for PEMFCs

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        Scientific aspects of polymer electrolyte fuel cell durability and degradation.

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          Stabilization of platinum oxygen-reduction electrocatalysts using gold clusters.

          We demonstrated that platinum (Pt) oxygen-reduction fuel-cell electrocatalysts can be stabilized against dissolution under potential cycling regimes (a continuing problem in vehicle applications) by modifying Pt nanoparticles with gold (Au) clusters. This behavior was observed under the oxidizing conditions of the O2 reduction reaction and potential cycling between 0.6 and 1.1 volts in over 30,000 cycles. There were insignificant changes in the activity and surface area of Au-modified Pt over the course of cycling, in contrast to sizable losses observed with the pure Pt catalyst under the same conditions. In situ x-ray absorption near-edge spectroscopy and voltammetry data suggest that the Au clusters confer stability by raising the Pt oxidation potential.
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            Author and article information

            Journal
            Journal of Power Sources
            Journal of Power Sources
            Elsevier BV
            03787753
            September 2008
            September 2008
            : 184
            : 1
            : 104-119
            10.1016/j.jpowsour.2008.06.006
            © 2008

            http://www.elsevier.com/tdm/userlicense/1.0/

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