Promoting Effect of Tin in Platinum Electrocatalysts for Direct Methanol Fuel Cells (DMFC)

Autores
Veizaga, Natalia Soledad; Rodriguez, Virginia Ines; Rocha, Thairo A.; Bruno, Mariano Martín; Scelza, Osvaldo Antonio; de Miguel, Sergio Ruben; Gonzalez, Ernesto R.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Pt-Sn anodic catalysts supported on multiwall carbon nanotubes, mesoporous carbon and Vulcan carbon were prepared using a deposition-reduction technique with sodium borohydride, characterized by different techniques and tested as anodes in a single direct methanol fuel cell at low temperatures. Characterization and CO stripping results indicate the presence of promoting effects of Sn over Pt in catalysts supported on Vulcan carbon and carbon nanotubes. This would mainly be caused both by geometric modifications induced by Sn placed in the surroundings of the active metal phase and probable electronic effects. These promoting effects make the oxidation of CO to CO2 at low potentials easier, thus improving the CO tolerance of the anodic electrocatalyst. On the other hand, Pt-Sn catalysts supported on mesoporous carbon do not show a proper metallic phase needed for a good electrochemical behavior. When catalysts were tested in a DMFC, Pt-Sn catalysts supported on Vulcan carbon and carbon nanotubes gave a better power density than a commercial one mainly when working at low current densities.
Fil: Veizaga, Natalia Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Rodriguez, Virginia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Rocha, Thairo A.. Universidade de Sao Paulo; Brasil
Fil: Bruno, Mariano Martín. Comisión Nacional de Energía Atómica. Gerencia Química. CAC; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Scelza, Osvaldo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: de Miguel, Sergio Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Gonzalez, Ernesto R.. Universidade de Sao Paulo; Brasil
Materia
Carbonaceous Support
Electrocatalyst Pt-Sn
Dmfc
Sodium Borohydride
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/31867
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/31867
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Promoting Effect of Tin in Platinum Electrocatalysts for Direct Methanol Fuel Cells (DMFC)Veizaga, Natalia SoledadRodriguez, Virginia InesRocha, Thairo A.Bruno, Mariano MartínScelza, Osvaldo Antoniode Miguel, Sergio RubenGonzalez, Ernesto R.Carbonaceous SupportElectrocatalyst Pt-SnDmfcSodium Borohydridehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Pt-Sn anodic catalysts supported on multiwall carbon nanotubes, mesoporous carbon and Vulcan carbon were prepared using a deposition-reduction technique with sodium borohydride, characterized by different techniques and tested as anodes in a single direct methanol fuel cell at low temperatures. Characterization and CO stripping results indicate the presence of promoting effects of Sn over Pt in catalysts supported on Vulcan carbon and carbon nanotubes. This would mainly be caused both by geometric modifications induced by Sn placed in the surroundings of the active metal phase and probable electronic effects. These promoting effects make the oxidation of CO to CO2 at low potentials easier, thus improving the CO tolerance of the anodic electrocatalyst. On the other hand, Pt-Sn catalysts supported on mesoporous carbon do not show a proper metallic phase needed for a good electrochemical behavior. When catalysts were tested in a DMFC, Pt-Sn catalysts supported on Vulcan carbon and carbon nanotubes gave a better power density than a commercial one mainly when working at low current densities.Fil: Veizaga, Natalia Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Rodriguez, Virginia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Rocha, Thairo A.. Universidade de Sao Paulo; BrasilFil: Bruno, Mariano Martín. Comisión Nacional de Energía Atómica. Gerencia Química. CAC; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Scelza, Osvaldo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: de Miguel, Sergio Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Gonzalez, Ernesto R.. Universidade de Sao Paulo; BrasilElectrochemical Society2014-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31867Gonzalez, Ernesto R.; de Miguel, Sergio Ruben; Scelza, Osvaldo Antonio; Bruno, Mariano Martín; Rocha, Thairo A.; Rodriguez, Virginia Ines; et al.; Promoting Effect of Tin in Platinum Electrocatalysts for Direct Methanol Fuel Cells (DMFC); Electrochemical Society; Journal of the Electrochemical Society; 162; 13; 12-2014; 243-2490013-46511945-7111CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1149/2.0181503jesinfo:eu-repo/semantics/altIdentifier/url/http://jes.ecsdl.org/content/162/3/F243.abstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:01:48Zoai:ri.conicet.gov.ar:11336/31867instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 12:01:49.065CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Promoting Effect of Tin in Platinum Electrocatalysts for Direct Methanol Fuel Cells (DMFC)
title Promoting Effect of Tin in Platinum Electrocatalysts for Direct Methanol Fuel Cells (DMFC)
spellingShingle Promoting Effect of Tin in Platinum Electrocatalysts for Direct Methanol Fuel Cells (DMFC)
Veizaga, Natalia Soledad
Carbonaceous Support
Electrocatalyst Pt-Sn
Dmfc
Sodium Borohydride
title_short Promoting Effect of Tin in Platinum Electrocatalysts for Direct Methanol Fuel Cells (DMFC)
title_full Promoting Effect of Tin in Platinum Electrocatalysts for Direct Methanol Fuel Cells (DMFC)
title_fullStr Promoting Effect of Tin in Platinum Electrocatalysts for Direct Methanol Fuel Cells (DMFC)
title_full_unstemmed Promoting Effect of Tin in Platinum Electrocatalysts for Direct Methanol Fuel Cells (DMFC)
title_sort Promoting Effect of Tin in Platinum Electrocatalysts for Direct Methanol Fuel Cells (DMFC)
dc.creator.none.fl_str_mv Veizaga, Natalia Soledad
Rodriguez, Virginia Ines
Rocha, Thairo A.
Bruno, Mariano Martín
Scelza, Osvaldo Antonio
de Miguel, Sergio Ruben
Gonzalez, Ernesto R.
author Veizaga, Natalia Soledad
author_facet Veizaga, Natalia Soledad
Rodriguez, Virginia Ines
Rocha, Thairo A.
Bruno, Mariano Martín
Scelza, Osvaldo Antonio
de Miguel, Sergio Ruben
Gonzalez, Ernesto R.
author_role author
author2 Rodriguez, Virginia Ines
Rocha, Thairo A.
Bruno, Mariano Martín
Scelza, Osvaldo Antonio
de Miguel, Sergio Ruben
Gonzalez, Ernesto R.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Carbonaceous Support
Electrocatalyst Pt-Sn
Dmfc
Sodium Borohydride
topic Carbonaceous Support
Electrocatalyst Pt-Sn
Dmfc
Sodium Borohydride
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Pt-Sn anodic catalysts supported on multiwall carbon nanotubes, mesoporous carbon and Vulcan carbon were prepared using a deposition-reduction technique with sodium borohydride, characterized by different techniques and tested as anodes in a single direct methanol fuel cell at low temperatures. Characterization and CO stripping results indicate the presence of promoting effects of Sn over Pt in catalysts supported on Vulcan carbon and carbon nanotubes. This would mainly be caused both by geometric modifications induced by Sn placed in the surroundings of the active metal phase and probable electronic effects. These promoting effects make the oxidation of CO to CO2 at low potentials easier, thus improving the CO tolerance of the anodic electrocatalyst. On the other hand, Pt-Sn catalysts supported on mesoporous carbon do not show a proper metallic phase needed for a good electrochemical behavior. When catalysts were tested in a DMFC, Pt-Sn catalysts supported on Vulcan carbon and carbon nanotubes gave a better power density than a commercial one mainly when working at low current densities.
Fil: Veizaga, Natalia Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Rodriguez, Virginia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Rocha, Thairo A.. Universidade de Sao Paulo; Brasil
Fil: Bruno, Mariano Martín. Comisión Nacional de Energía Atómica. Gerencia Química. CAC; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Scelza, Osvaldo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: de Miguel, Sergio Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Gonzalez, Ernesto R.. Universidade de Sao Paulo; Brasil
description Pt-Sn anodic catalysts supported on multiwall carbon nanotubes, mesoporous carbon and Vulcan carbon were prepared using a deposition-reduction technique with sodium borohydride, characterized by different techniques and tested as anodes in a single direct methanol fuel cell at low temperatures. Characterization and CO stripping results indicate the presence of promoting effects of Sn over Pt in catalysts supported on Vulcan carbon and carbon nanotubes. This would mainly be caused both by geometric modifications induced by Sn placed in the surroundings of the active metal phase and probable electronic effects. These promoting effects make the oxidation of CO to CO2 at low potentials easier, thus improving the CO tolerance of the anodic electrocatalyst. On the other hand, Pt-Sn catalysts supported on mesoporous carbon do not show a proper metallic phase needed for a good electrochemical behavior. When catalysts were tested in a DMFC, Pt-Sn catalysts supported on Vulcan carbon and carbon nanotubes gave a better power density than a commercial one mainly when working at low current densities.
publishDate 2014
dc.date.none.fl_str_mv 2014-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/31867
Gonzalez, Ernesto R.; de Miguel, Sergio Ruben; Scelza, Osvaldo Antonio; Bruno, Mariano Martín; Rocha, Thairo A.; Rodriguez, Virginia Ines; et al.; Promoting Effect of Tin in Platinum Electrocatalysts for Direct Methanol Fuel Cells (DMFC); Electrochemical Society; Journal of the Electrochemical Society; 162; 13; 12-2014; 243-249
0013-4651
1945-7111
CONICET Digital
CONICET
url http://hdl.handle.net/11336/31867
identifier_str_mv Gonzalez, Ernesto R.; de Miguel, Sergio Ruben; Scelza, Osvaldo Antonio; Bruno, Mariano Martín; Rocha, Thairo A.; Rodriguez, Virginia Ines; et al.; Promoting Effect of Tin in Platinum Electrocatalysts for Direct Methanol Fuel Cells (DMFC); Electrochemical Society; Journal of the Electrochemical Society; 162; 13; 12-2014; 243-249
0013-4651
1945-7111
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1149/2.0181503jes
info:eu-repo/semantics/altIdentifier/url/http://jes.ecsdl.org/content/162/3/F243.abstract
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Electrochemical Society
publisher.none.fl_str_mv Electrochemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846782351745482752
score 12.982451

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