A Ptsub(3)Sn/C electrocatalyst with superior activity toward direct ethanol fuel cells
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2009
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INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS, 11th
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– A carbon-supported binary Pt3Sn catalyst was prepared using a modified polymeric precursor method. This material was
characterized using X-ray diffraction (XRD), and the results showed that Pt3Sn is the dominant phase. The transmission electron
microscopy showed good dispersion of the electrocatalyst and small particle sizes (3.6 nm ± 1.1 nm). The polarization curves for a
DEFC using Pt3Sn/C as the anode presented an improved performance compared to that with PtSn/C E-TEK. The maximum power
density for Pt3Sn/C electrocatalyst (55 mW cm-2) is nearly twice as great as that of PtSn/C E-TEK electrocatalyst (33 mW cm-2). This
behavior may be explained by an electronic effect which is responsible for the increasing in the efficiency toward EOR as indicated in
the literature.
Como referenciar
PARREIRA, L.S.; SOUZA, R.F.B. de; RASCIO, D.C.; SILVA, J.C.M.; SPINACE, E.V.; OLIVEIRA NETO, A.; SANTOS, M.C. A Ptsub(3)Sn/C electrocatalyst with superior activity toward direct ethanol fuel cells. In: INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS, 11th, September 20-25, 2009, Rio de Janeiro, RJ. Abstract... Disponível em: http://repositorio.ipen.br/handle/123456789/22860. Acesso em: 20 Mar 2026.
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