A Pt3Sn/C Electrocatalyst Used as the Cathode and Anode in a Single Direct Ethanol Fuel Cell

L. S. Parreira, D. C. Rascio, J. C. M. Silva, R. F. B. De Souza, M. D'Villa-Silva, M. L. Calegaro, E. V. Spinacé, A. O. Neto, M. C. Santos

Abstract


This paper presents a study involving the use of Pt3Sn/C electrocatalysts as cathodes and anodes in a single direct ethanol fuel cell. First, we studied the oxygen reduction reaction (ORR) using commercial Pt/C from ETEK and Pt3Sn/C as electrocatalysts with an alloy degree of 92 %. The electrocatalytic activity of the material for oxygen reduction was assessed using the rotating disk electrode technique (RDE). When Pt3Sn was tested for ORR in the presence of ethanol, the results showed greater tolerance to the cross-over effect than Pt/C in the electrochemical cell. The experiments in a single direct ethanol fuel cell showed that without oxygen pressurization of the cell, the maximum power density is higher using Pt3Sn/C as both cathode and anode than using Pt3Sn as an anode and Pt/C as a cathode. When using Pt3Sn/C as both the cathode and anode in a direct ethanol fuel cell, cell performance enhances.


Full Text: PDF DOI: 10.5539/ijc.v4n2p38

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International Journal of Chemistry   ISSN 1916-9698 (Print)   ISSN 1916-9701 (Online)

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