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Issue 27, 2014
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Effect of ordering of PtCu3 nanoparticle structure on the activity and stability for the oxygen reduction reaction

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Abstract

In this study the performance enhancement effect of structural ordering for the oxygen reduction reaction (ORR) is systematically studied. Two samples of PtCu3 nanoparticles embedded on a graphitic carbon support are carefully prepared with identical initial composition, particle dispersion and size distribution, yet with different degrees of structural ordering. Thus we can eliminate all coinciding effects and unambiguously relate the improved activity of the ORR and more importantly the enhanced stability to the ordered nanostructure. Interestingly, the electrochemically induced morphological changes are common to both ordered and disordered samples. The observed effect could have a groundbreaking impact on the future directions in the rational design of active and stable platinum alloyed ORR catalysts.

Graphical abstract: Effect of ordering of PtCu3 nanoparticle structure on the activity and stability for the oxygen reduction reaction

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Supplementary files

Article information


Submitted
08 Feb 2014
Accepted
10 Apr 2014
First published
10 Apr 2014

This article is Open Access

Phys. Chem. Chem. Phys., 2014,16, 13610-13615
Article type
Paper
Author version available

Effect of ordering of PtCu3 nanoparticle structure on the activity and stability for the oxygen reduction reaction

N. Hodnik, C. Jeyabharathi, J. C. Meier, A. Kostka, K. L. Phani, A. Rečnik, M. Bele, S. Hočevar, M. Gaberšček and K. J. J. Mayrhofer, Phys. Chem. Chem. Phys., 2014, 16, 13610
DOI: 10.1039/C4CP00585F

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