Acta Phys. -Chim. Sin. ›› 2006, Vol. 22 ›› Issue (02): 141-145.doi: 10.3866/PKU.WHXB20060203

• ARTICLE • Previous Articles     Next Articles

The Effect of NdOx as Co-catalyst for the Electro-oxidation of Methanol on PtRu/C

CHEN Ling; WANG Xin-dong; GUO Min   

  1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
  • Received:2005-06-18 Revised:2005-09-27 Published:2006-01-22
  • Contact: WANG Xin-dong

Abstract: The PtRu-NdOx /C catalysts have been prepared by deposition-reduction method. EDX、XRD, and TEM measurements have been used to characterize the composition, particle size, and crystallinity of the catalysts. The catalyst materials consist of Pt-Ru alloy particles and varying amounts of Nd oxide. The average particle size and the lattice parameter of the catalysts are about 2 nm and 0.3896 nm, respectively, which indicates that Nd oxide in PtRu-NdOx /C has no effects on the crystal structure of the Pt-Ru alloy particles. The electrocatalytic activities of the PtRu-NdOx /C catalysts and PtRu/C catalysts have been investigated by cyclic voltammetry and chronoamperometric measurements. Nd oxide can improve the degree of dispersion of the noble metals in the catalysts and as co-catalyst lead to an improvement of the catalytic activity towards methanol oxidation.

Key words: Direct methanol fuel cell, PtRu-NdOx /C catalyst, Deposition-reduction method, Electrochemical catalysis