Issue 30, 2008
From the journal:

Journal of Materials Chemistry

Electrochemical catalytic activity for the hydrogen oxidation of mesoporous WO3 and WO3/C composites

Xiangzhi Cui,a   Hua Zhang,b   Xiaoping Dong,a   Hangrong Chen,a   Lingxia Zhang,a   Limin Guoa  and  Jianlin Shi*a  

* Corresponding authors

a State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, P.R. China
E-mail: jlshi@sunm.shcnc.ac.cn.
Fax: +86-21-52413122
Tel: +86-21-52412714

b Nanjing University of Technology, New-model Road, 5, Nanjing, P.R. China

Abstract

New catalysts for hydrogen oxidation, mesoporous WO3 and WO3/C composites, have been synthesized by a simple one-step casting method using mesoporous silica (KIT-6) as hard template. The materials were characterized with XRD, XPS, TEM and N2 sorption techniques. Cyclic voltammetry (CV) and single cell test for hydrogen oxidation were adopted to characterize the electrochemical performance of the materials. The mesoporous WO3 has a high surface area of 86 m2 g−1 and a well-crystallized framework. This material exhibits stable electrochemical activity for hydrogen desorption/oxidation in half-cell experiments, and after mixing with the appropriate amount of carbon black the resultant mesostructured WO3/C composites show further enhanced electrocatalytic activity and even higher hydrogen oxidation/reduction peak currents than the commercial catalyst 20 wt% Pt/C. The single cell test results indicate that the mesostructured WO3/C composites have clear current output in a proton exchange membrane fuel cell (PEMFC) and exhibit electrochemical catalytic activity toward hydrogen oxidation, and appears to be a potential anode catalyst in PEMFCs.

Graphical abstract: Electrochemical catalytic activity for the hydrogen oxidation of mesoporous WO3 and WO3/C composites

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Article information

DOI
https://doi.org/10.1039/B806115G
Article type
Paper
Submitted
14 Apr 2008
Accepted
28 May 2008
First published
02 Jul 2008

J. Mater. Chem., 2008,18, 3575-3580

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Electrochemical catalytic activity for the hydrogen oxidation of mesoporous WO3 and WO3/C composites

X. Cui, H. Zhang, X. Dong, H. Chen, L. Zhang, L. Guo and J. Shi, J. Mater. Chem., 2008, 18, 3575 DOI: 10.1039/B806115G

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