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Electro-oxidation of ethanol using PtRuBi/C electrocatalyst prepared by borohydride reduction

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Abstract

Pt/C, PtRu/C, PtBi/C, and PtRuBi/C electrocatalysts (20 wt.% metal loading) were prepared by borohydride reduction using H2PtCl6·6H2O, RuCl3·xH2O, and Bi(NO3)3·5H2O as metal sources and Vulcan XC 72 as support. The electrocatalysts were characterized by energy-dispersive X-ray analysis, X-ray diffraction, and thermogravimetric analysis. The electro-oxidation of ethanol was studied in sulfuric acid solution by cyclic voltammetry and chronoamperometry. The electrochemical studies showed that PtRuBi/C (50:40:10) electrocatalyst has superior performance for ethanol electro-oxidation at room temperature compared to the other electrocatalysts. Preliminary tests at 100 °C on a single direct ethanol fuel cell also confirm the results obtained by electrochemical techniques.

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Acknowledgments

The authors thank FINEP-ProH2, CNPq, and FAPESP for financial support.

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Authors and Affiliations

  1. Instituto de Pesquisas Energéticas e Nucleares, CNEN/SP, São Paulo, SP, 05508-000, Brazil

    M. Brandalise, R. W. R. Verjulio-Silva, M. M. Tusi, O. V. Correa, L. A. Farias, M. Linardi, E. V. Spinacé & A. Oliveira Neto

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  1. M. Brandalise
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  2. R. W. R. Verjulio-Silva
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  3. M. M. Tusi
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  4. O. V. Correa
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  5. L. A. Farias
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  6. M. Linardi
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  7. E. V. Spinacé
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  8. A. Oliveira Neto
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Correspondence to A. Oliveira Neto.

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Brandalise, M., Verjulio-Silva, R.W.R., Tusi, M.M. et al. Electro-oxidation of ethanol using PtRuBi/C electrocatalyst prepared by borohydride reduction. Ionics 15, 743–747 (2009). https://doi.org/10.1007/s11581-009-0340-6

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  • DOI: https://doi.org/10.1007/s11581-009-0340-6

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