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arXiv · 1011.4721

Pt-Decorated PdCo@Pd/C Core-Shell Nanoparticles with Enhanced Stability and Electrocatalytic Activity for Oxygen Reduction Reaction

Deli Wang·Huolin L. Xin·Yingchao Yu·Hongsen Wang·Eric Rus·David A. Muller·Hector D. Abruña
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Abstract

A simple method for the preparation of PdCo@Pd core-shell nanoparticles supported on carbon has been developed using an adsorbate-induced surface segregation effect. The stability and electrocatalytic activity for the oxygen reduction of PdCo@Pd nanoparticles was enhanced by a small amount of Pt, deposited via a spontaneous displacement reaction. The facile method described herein is suitable for large-scale lower cost production and significantly lowers the Pt loading and thus cost. The as-prepared PdCo@Pd and Pd-decorated PdCo@Pd nanocatalysts have higher methanol-tolerance for the ORR when compared to Pt/C, and are promising cathode catalysts for fuel cell applications.

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Deli Wang, Huolin L. Xin, Yingchao Yu, Hongsen Wang, Eric Rus, David A. Muller, Hector D. Abruña. 2010-11-22. Pt-Decorated PdCo@Pd/C Core-Shell Nanoparticles with Enhanced Stability and Electrocatalytic Activity for Oxygen Reduction Reaction. https://doi.org/10.1021/ja107874u

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