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Electro-oxidation of ethanol using PtSnRh/C electrocatalysts prepared by an alcohol-reduction process

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Abstract

PtRh/C (90:10), PtRh/C (50:50), PtSn/C (50:50), and PtSnRh/C (50:40:10) electrocatalysts were prepared by an alcohol-reduction process using ethylene glycol as solvent and reduction agent and Vulcan Carbon XC72 as supports. The electrocatalysts were characterized by energy-dispersive X-ray analysis, X-ray diffraction, and transmission electron microscopy. The electro-oxidation of ethanol was studied by cyclic voltammetry chronoamperometry at room temperature and on a single cell of a direct ethanol fuel cell at 100 °C. Cyclic voltammetry and chronoamperometry experiments showed that PtSnRh/C and PtSn/C electrocatalysts have similar performance for ethanol oxidation at room temperature, while the activity of PtRh/C electrocatalysts was very low. At 100 °C on a single cell, PtSnRh/C showed superior performance compared to PtSn/C and PtRh/C electrocatalysts.

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Acknowledgments

The authors thank MCT-ProH2, CNPq, and FAPESP (07/07898-1) for financial support.

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Authors and Affiliations

  1. Instituto de Pesquisas Energéticas e Nucleares, IPEN—CNEN/SP, Av. Prof. Lineu Prestes, 2242—Cidade Universitária, CEP 05508-000, São Paulo, SP, Brazil

    E. V. Spinacé, Ricardo R. Dias, Michele Brandalise, Marcelo Linardi & Almir Oliveira Neto

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  1. E. V. Spinacé
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  2. Ricardo R. Dias
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  3. Michele Brandalise
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  4. Marcelo Linardi
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  5. Almir Oliveira Neto
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Corresponding authors

Correspondence to E. V. Spinacé or Almir Oliveira Neto.

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Spinacé, E.V., Dias, R.R., Brandalise, M. et al. Electro-oxidation of ethanol using PtSnRh/C electrocatalysts prepared by an alcohol-reduction process. Ionics 16, 91–95 (2010). https://doi.org/10.1007/s11581-009-0396-3

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  • DOI: https://doi.org/10.1007/s11581-009-0396-3

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