Preparation of PtRu/C electrocatalysts using citric acid as reducing agent and OH- ions as stabilizing agent for direct alcohol fuel cell (DAFC)
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International Journal of Electrochemical Science
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PtRu/C electrocatalysts (Pt:Ru atomic ratio of 50:50 and 80:20) were prepared using citric acid as
reducing agent and OH-
ions as stabilizing agent. The obtained electrocatalysts were characterized by
energy dispersive X-ray analysis and transmission electron microscopy. The electro-oxidation of
methanol and ethanol were studied at room temperature by chronoamperometry. Studies on the Direct
Methanol Fuel Cell (DMFC) and Direct Ethanol Fuel Cell (DEFC) were carried at 90°C. For both
electrocatalysts the obtained Pt:Ru atomic ratios were similar to the nominal ones and the average
particles sizes were around 2.5 nm. The chronoamperometry and DAFC experiments showed that the
electrocatalyst prepared with Pt:Ru atomic ratio of 80:20 has a superior performance for methanol
oxidation, while the electrocatalyst prepared with Pt:Ru atomic ratio of 50:50 has a superior
performance for ethanol oxidation.
Como referenciar
OLIVEIRA NETO, A.; VERJULIO SILVA, R.W.R.; LINARDI, M.; SPINACE, E.V. Preparation of PtRu/C electrocatalysts using citric acid as reducing agent and OH- ions as stabilizing agent for direct alcohol fuel cell (DAFC). International Journal of Electrochemical Science, v. 4, n. 7, p. 954-961, 2009. DOI: 10.1016/s1452-3981(23)15198-4. Disponível em: http://repositorio.ipen.br/handle/123456789/4855. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.