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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/31867
Ver los metadatos del registro completo
id |
CONICETDig_1861d9702e6a5496e599dc316d670ec2 |
---|---|
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 Técnicas2025-09-29T10:29:22Zoai: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:34982025-09-29 10:29:23.074CONICET 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_ |
1844614299957329920 |
score |
13.070432 |