Electro-oxidation of ethanol using PtSnRh/C electrocatalysts prepared by an alcohol-reduction process
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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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SPINACE, E.V.; DIAS, RICARDO R.; BRANDALISE, MICHELE; LINARDI, MARCELO; OLIVEIRA NETO, ALMIR. Electro-oxidation of ethanol using PtSnRh/C electrocatalysts prepared by an alcohol-reduction process. Ionics, v. 16, n. 1, p. 91-95, 2010. DOI: 10.1007/s11581-009-0396-3. Disponível em: http://repositorio.ipen.br/handle/123456789/4721. Acesso em: 30 Dec 2025.
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