Ni@Pt core-shell nanoparticles with enhanced catalytic activity for oxygen reduction reaction

Authors

Guoxiu WangFollow
Huimin Wu, Hubei University, Wuhan, ChinaFollow
David Wexler, University of WollongongFollow
Hua-Kun Liu, University of WollongongFollow
Oumarou Savadogo, Ecole Polytechique de Montréal

RIS ID

33352

Publication Details

Wu, H., Wang, G., Wexler, D., Savadogo, O. & Liu, H. K. (2010). Ni@Pt core-shell nanoparticles with enhanced catalytic activity for oxygen reduction reaction. Journal of Alloys and Compounds 163s, 503 (1), L1-L4.

Abstract

Ni@Pt core–shell nanoparticles were synthesized by chemical reduction and sequential chemical deposition. The as-prepared nanoparticles were characterized by X-ray diffraction and high resolution transmission electron microscopy. Cyclic voltammetry and steady-state polarization measurements revealed that the Ni@Pt core–shell nanoparticles have much higher catalytic activity towards oxygen reduction than that of commercial BASF 20 wt Pt% catalyst. Ni@Pt core–shell nanoparticles only contain 16.7 at Pt%, therefore having a significantly reduced cost. Core–shell nanostructures could be a promising strategy to reduce the catalyst costs, but still maintain high catalytic reactivity.