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Dispersed platinum supported by hydrogen molybdenum bronze-modified carbon as electrocatalyst for methanol oxidation

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Abstract

A new electrocatalyst, Pt/HxMoO3-C, for methanol oxidation, was prepared by dispersing platinum nano-particles on Vulcan XC-72 modified by hydrogen molybdenum bronze (HxMoO3, 0 ≤ x ≤ 2). The modification of Vulcan XC-72 with HxMoO3 on was accomplished by reducing the adsorbed molybdic acid and the platinum nano-particles were dispersed on the modified carbon by reducing chloroplatinic acid, with formaldehyde as the reductant. The prepared Pt/HxMoO3-C was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersion spectrometer, cyclic voltammetry (CV), chronoamperometry (CA), and single-cell test, with a comparison of the electrocatalyst, carbon-supported platinum (Pt/C) prepared under the same condition but without the modification. The results obtained from XRD and SEM showed that the modification of Vulcan XC-72 with HxMoO3 reduced the platinum particle size and improved distribution uniformity of platinum on carbon. The results, obtained from CV, CA, and the single-cell test, showed that Pt/HxMoO3-C exhibited better electrocatalytic activity toward methanol oxidation than Pt/C.

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Acknowledgements

This work was supported by the National 863 project of China (No. 2009AA05Z112) and the National Natural Science Foundation of China (NSFC, No. 20573039).

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Authors and Affiliations

  1. School of Chemistry and Environment and Key Lab of Electrochemical Technology on Energy Storage and Power Generation in Guangdong Universities, South China Normal University, Guangzhou, 510006, China

    Xingde Xiang, Weishan Li, Zhihui Zhou, Zhao Fu, Jianfei Lei & Yuli Lin

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  1. Xingde Xiang
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  2. Weishan Li
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  3. Zhihui Zhou
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  4. Zhao Fu
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  5. Jianfei Lei
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Correspondence to Weishan Li.

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Xiang, X., Li, W., Zhou, Z. et al. Dispersed platinum supported by hydrogen molybdenum bronze-modified carbon as electrocatalyst for methanol oxidation. J Solid State Electrochem 14, 903–908 (2010). https://doi.org/10.1007/s10008-009-0988-x

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  • DOI: https://doi.org/10.1007/s10008-009-0988-x

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