Effect of ceria on carbon supported platinum catalysts for methanol electrooxidation

Pt–CeO 2/C catalysts were synthesized by a one-step microwave polyol process and compared with Pt/C (E-TEK) catalyst in terms of the electrochemical activity for methanol oxidation using the cyclic voltammetry and chronoamperometry. The results demonstrated that Pt–CeO 2/C catalysts exhibited lower...

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Bibliographic Details
Published in:Materials chemistry and physics 2009-02, Vol.113 (2), p.591-595
Main Authors: Zhao, Jie, Chen, Weixiang, Zheng, Yifan
Format: Article
Language:English
Subjects:
Catalysts
Methanol electrooxidation
Microwave
Polyol process
Pt–CeO 2
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Summary:Pt–CeO 2/C catalysts were synthesized by a one-step microwave polyol process and compared with Pt/C (E-TEK) catalyst in terms of the electrochemical activity for methanol oxidation using the cyclic voltammetry and chronoamperometry. The results demonstrated that Pt–CeO 2/C catalysts exhibited lower onset potential, higher current peak and better stability for methanol electrooxidation than Pt/C (E-TEK) catalyst. The effect of ceria on the catalytic activity was investigated by electrochemical measurements and the highest electrochemical activity was obtained at the molar ratio of Pt to Ce by 2:1. The preliminary mechanism of the enhanced electrocatalytic performance for methanol oxidation was discussed.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2008.07.107