Preparation of PtSn/C electrocatalysts using citric acid as reducing agent for direct ethanol fuel cell (DEFC)
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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.
Como referenciar
OLIVEIRA NETO, ALMIR; VERJULIO SILVA, R.W.R.; LINARDI, M.; SPINACE, E.V. Preparation of PtSn/C electrocatalysts using citric acid as reducing agent for direct ethanol fuel cell (DEFC). Ionics, v. 16, n. 1, p. 85-89, 2010. DOI: 10.1007/s11581-009-0398-1. Disponível em: http://repositorio.ipen.br/handle/123456789/4722. Acesso em: 24 Mar 2026.
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