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Preparation of PtSn/C electrocatalysts using citric acid as reducing agent for direct ethanol fuel cell (DEFC)

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Abstract

PtSn/C electrocatalysts (Pt:Sn atomic ratios of 50:50 and 60:40) were prepared using citric acid as reducing agent, and the pH of the reaction medium was varied by the addition of OH− ions. The obtained electrocatalysts were characterized by energy dispersive X-ray analysis, X-ray diffraction, and transmission electron microscopy. The electrocatalysts were tested on the direct ethanol fuel cell (DEFC) at 90 °C. The obtained PtSn/C electrocatalysts showed the presence of a face-centered cubic, Pt, and SnO2 phases. In DEFC studies, the PtSn/C electrocatalysts showed a superior performance compared to a commercial PtSn/C and Pt/C electrocatalysts from E-TEK.

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Acknowledgments

The authors thank FAPESP (07/07898-1), CNPq and FINEP-ProH2 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

    Almir Oliveira Neto, R. W. R. Verjulio-Silva, M. Linardi & E. V. Spinacé

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  1. Almir Oliveira Neto
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  2. R. W. R. Verjulio-Silva
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  3. M. Linardi
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  4. E. V. Spinacé
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Correspondence to Almir Oliveira Neto.

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Neto, A.O., Verjulio-Silva, R.W.R., Linardi, M. et al. Preparation of PtSn/C electrocatalysts using citric acid as reducing agent for direct ethanol fuel cell (DEFC). Ionics 16, 85–89 (2010). https://doi.org/10.1007/s11581-009-0398-1

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  • DOI: https://doi.org/10.1007/s11581-009-0398-1

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