Ethanol Electrooxidation on Pt with Lanthanum Oxide as Cocatalyst in a DAFC

Ethanol Electrooxidation on Pt with Lanthanum Oxide as Cocatalyst in a DAFC

Electrocatalytic activity toward ethanol electrooxidation of Pt particles in PtLa/C catalysts with different Pt : La ratios has been studied with different electrochemical and spectroscopic techniques, and the results were compared to those of Pt/C catalyst. Significant enhancement in the electrocat...

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Main Authors: T. A. B. Santoro, A. Oliveira Neto, C. A. L. G. de O. Forbicini, M. Linardi, J. L. Rodríguez, E. Pastor
Format: Article
Language:English
Published: Hindawi Limited 2012-01-01
Series:International Journal of Electrochemistry
Online Access:http://dx.doi.org/10.1155/2012/674150
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spelling doaj-5828e899bf7344ae89e6c5dfbc2dd1ee2020-11-24T20:58:12ZengHindawi LimitedInternational Journal of Electrochemistry2090-35292090-35372012-01-01201210.1155/2012/674150674150Ethanol Electrooxidation on Pt with Lanthanum Oxide as Cocatalyst in a DAFCT. A. B. Santoro0A. Oliveira Neto1C. A. L. G. de O. Forbicini2M. Linardi3J. L. Rodríguez4E. Pastor5Departamento de Química Física, Instituto Universitario de Materiales y Nanotecnología, Universidad de La Laguna, C/Astrofísico Francisco Sánchez s/n, 38071 La Laguna, SpainInstituto de Pesquisas Energéticas e Nucleares (IPEN), CNEN-SP, Avenida Professor Lineu Prestes 2242, Cidade Universitária, 05508-900 São Paulo, SP, BrazilInstituto de Pesquisas Energéticas e Nucleares (IPEN), CNEN-SP, Avenida Professor Lineu Prestes 2242, Cidade Universitária, 05508-900 São Paulo, SP, BrazilInstituto de Pesquisas Energéticas e Nucleares (IPEN), CNEN-SP, Avenida Professor Lineu Prestes 2242, Cidade Universitária, 05508-900 São Paulo, SP, BrazilDepartamento de Química Física, Instituto Universitario de Materiales y Nanotecnología, Universidad de La Laguna, C/Astrofísico Francisco Sánchez s/n, 38071 La Laguna, SpainDepartamento de Química Física, Instituto Universitario de Materiales y Nanotecnología, Universidad de La Laguna, C/Astrofísico Francisco Sánchez s/n, 38071 La Laguna, SpainElectrocatalytic activity toward ethanol electrooxidation of Pt particles in PtLa/C catalysts with different Pt : La ratios has been studied with different electrochemical and spectroscopic techniques, and the results were compared to those of Pt/C catalyst. Significant enhancement in the electrocatalytic activity has been achieved by depositing the Pt particles with lanthanum oxides/hydroxides using an alcohol reduction method. Compared to Pt/C catalyst, PtLa/C materials exhibit a lower onset potential and a higher electron-transfer rate constant for the investigated reaction. These studies illustrate the possibility of utilizing Pt/C with La oxides/hidroxides as electrocatalyst for direct alcohol fuel cells (DAFCs).http://dx.doi.org/10.1155/2012/674150
collection DOAJ
language English
format Article
sources DOAJ
author T. A. B. Santoro
A. Oliveira Neto
C. A. L. G. de O. Forbicini
M. Linardi
J. L. Rodríguez
E. Pastor
spellingShingle T. A. B. Santoro
A. Oliveira Neto
C. A. L. G. de O. Forbicini
M. Linardi
J. L. Rodríguez
E. Pastor
Ethanol Electrooxidation on Pt with Lanthanum Oxide as Cocatalyst in a DAFC
International Journal of Electrochemistry
author_facet T. A. B. Santoro
A. Oliveira Neto
C. A. L. G. de O. Forbicini
M. Linardi
J. L. Rodríguez
E. Pastor
author_sort T. A. B. Santoro
title Ethanol Electrooxidation on Pt with Lanthanum Oxide as Cocatalyst in a DAFC
title_short Ethanol Electrooxidation on Pt with Lanthanum Oxide as Cocatalyst in a DAFC
title_full Ethanol Electrooxidation on Pt with Lanthanum Oxide as Cocatalyst in a DAFC
title_fullStr Ethanol Electrooxidation on Pt with Lanthanum Oxide as Cocatalyst in a DAFC
title_full_unstemmed Ethanol Electrooxidation on Pt with Lanthanum Oxide as Cocatalyst in a DAFC
title_sort ethanol electrooxidation on pt with lanthanum oxide as cocatalyst in a dafc
publisher Hindawi Limited
series International Journal of Electrochemistry
issn 2090-3529
2090-3537
publishDate 2012-01-01
description Electrocatalytic activity toward ethanol electrooxidation of Pt particles in PtLa/C catalysts with different Pt : La ratios has been studied with different electrochemical and spectroscopic techniques, and the results were compared to those of Pt/C catalyst. Significant enhancement in the electrocatalytic activity has been achieved by depositing the Pt particles with lanthanum oxides/hydroxides using an alcohol reduction method. Compared to Pt/C catalyst, PtLa/C materials exhibit a lower onset potential and a higher electron-transfer rate constant for the investigated reaction. These studies illustrate the possibility of utilizing Pt/C with La oxides/hidroxides as electrocatalyst for direct alcohol fuel cells (DAFCs).
url http://dx.doi.org/10.1155/2012/674150
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