Trimetallic catalyst based on PtRu modified by irreversible adsorption of Sb for direct ethanol fuel cells

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dc.contributorElectroquímica de Superficieses
dc.contributor.authorFigueiredo, Marta C.-
dc.contributor.authorSorsa, Olli-
dc.contributor.authorArán-Ais, Rosa M.-
dc.contributor.authorDoan, Nguyet-
dc.contributor.authorFeliu, Juan M.-
dc.contributor.authorKallio, Tanja-
dc.contributor.otherUniversidad de Alicante. Departamento de Química Físicaes
dc.contributor.otherUniversidad de Alicante. Instituto Universitario de Electroquímicaes
dc.identifier.citationJournal of Catalysis. 2015, 329: 69-77. doi:10.1016/j.jcat.2015.04.032es
dc.identifier.issn0021-9517 (Print)-
dc.identifier.issn1090-2694 (Online)-
dc.description.abstractIn this work, PtRu/C–Sb materials prepared by adding a Sb salt to the ink of commercial PtRu/C were studied as catalysts for ethanol oxidation. The prepared trimetallic catalysts showed enhanced properties for ethanol oxidation through a wide range of surface coverages. However, coverage higher than 0.7 of Sb on PtRu/C causes the decrease of the catalytic activity suggesting that specific sites composed of 3 metals are necessary to achieve the highest performance. In situ Fourier Transform Infrared Spectroscopy experiments were also performed to compare the reaction products of the bimetallic and trimetallic catalysts. The catalysts were also tested under fuel cell conditions. Also in this case, higher power densities, higher open-circuit voltages and better stability than the bimetallic substrate were found. With this catalyst preparation method, the catalysts showed 2 times higher current densities than for the PtRu catalysts and 6 times better than for pure Pt
dc.description.sponsorshipThe financial support from Aalto University is acknowledged. This work made use of the Aalto University Nanomicroscopy Center (Aalto-NMC) premises. J.M.F. and R.M.A.A. would like to thank MICINN through Project
dc.rights© 2015 Elsevier
dc.subjectPtRu catalystses
dc.subjectIrreversible adsorptiones
dc.subjectDirect ethanol fuel cellses
dc.subject.otherQuímica Físicaes
dc.titleTrimetallic catalyst based on PtRu modified by irreversible adsorption of Sb for direct ethanol fuel cellses
Appears in Collections:INV - EQSUP - Artículos de Revistas

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