Methanol tolerant electrocatalysts for the oxygen reduction reaction

Autores
Asteazaran, Mariano; Bengio, Silvina; Triaca, Walter; Castro Luna, Ana
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Direct methanol fuel cells (DMFCs) represent an interesting alternative in obtaining electricity in a clean and efficient way. Portable power sources are one of the most promising applications of passive DMFCs. One of the requirements in these devices is to use high alcohol concentration, which due to methanol crossover causes a considerable loss of fuel cell efficiency. In order to develop methanol tolerant cathodes with suitable activity, different supported catalysts namely PtCo/C and PtCoRu/C, were prepared either via ethylene glycol reduction (EG) with or without microwave heating assistance (MW) or via the alloy method, the latter followed by a thermal treatment in a reducing atmosphere (N2/H2). All cathode-catalysts were tested to determine the role of the components in simultaneously enhancing the oxygen reduction reaction (ORR) and discouraging the methanol oxidation reaction. According to the synthesis methodology, X-ray photoelectron spectra showed that the amount of metal oxides on the surface varies, being higher on the PtCo/C EG and PtCoRu/C EG catalysts. The electrochemical characterization of the catalysts was accomplished in a three electrodes electrochemical cell with a glassy carbon rotating disk electrode covered with a thin catalytic film as working electrode. To study the ORR and the influence of different methanol concentrations, linear sweep voltammetry and cyclic voltammetry were employed. The PtCo/C EG, with an important metal oxide amount on the surface, and the PtCoRu/C MW and EG electrodes, both with RuO2 on their surfaces, were the most tolerant to methanol presence.
Fil: Asteazaran, Mariano. UTN (Universidad Tecnológica Nacional). CITEMA (Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales). UNLP-CONICET. INIFTA (Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas); Argentina
Fil: Bengio, Silvina. CAB CNEA (Centro Atómico Bariloche, Comisión Nacional de Energía Atómica). CONICET; Argentina
Fil: Triaca, Walter. UNLP-CONICET. INIFTA (Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas); Argentina
Fil: Castro Luna, Ana. UTN (Universidad Tecnológica Nacional). CITEMA (Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales). UNLP-CONICET. INIFTA (Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas); Argentina
Peer Reviewed
Materia
ORR; PtCo/C; PtCoRu/C; Methanol crossover; DMFC; Methanol-tolerant cathode catalysts
Nivel de accesibilidad
acceso abierto
Condiciones de uso
Atribución (Attribution): En cualquier explotación de la obra autorizada por la licencia será necesario reconocer la autoría (obligatoria en todos los casos). No comercial (Non Commercial): La explotación de la obra queda limitada a usos no comerciales. Sin obras derivadas (No Derivate Works): La autorización para explotar la obra no incluye la posibilidad de crear una obra derivada (traducciones, adaptaciones, etc.).
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/2630
Acceder
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network_name_str Repositorio Institucional Abierto (UTN)
spelling Methanol tolerant electrocatalysts for the oxygen reduction reactionAsteazaran, MarianoBengio, SilvinaTriaca, WalterCastro Luna, AnaORR; PtCo/C; PtCoRu/C; Methanol crossover; DMFC; Methanol-tolerant cathode catalystsDirect methanol fuel cells (DMFCs) represent an interesting alternative in obtaining electricity in a clean and efficient way. Portable power sources are one of the most promising applications of passive DMFCs. One of the requirements in these devices is to use high alcohol concentration, which due to methanol crossover causes a considerable loss of fuel cell efficiency. In order to develop methanol tolerant cathodes with suitable activity, different supported catalysts namely PtCo/C and PtCoRu/C, were prepared either via ethylene glycol reduction (EG) with or without microwave heating assistance (MW) or via the alloy method, the latter followed by a thermal treatment in a reducing atmosphere (N2/H2). All cathode-catalysts were tested to determine the role of the components in simultaneously enhancing the oxygen reduction reaction (ORR) and discouraging the methanol oxidation reaction. According to the synthesis methodology, X-ray photoelectron spectra showed that the amount of metal oxides on the surface varies, being higher on the PtCo/C EG and PtCoRu/C EG catalysts. The electrochemical characterization of the catalysts was accomplished in a three electrodes electrochemical cell with a glassy carbon rotating disk electrode covered with a thin catalytic film as working electrode. To study the ORR and the influence of different methanol concentrations, linear sweep voltammetry and cyclic voltammetry were employed. The PtCo/C EG, with an important metal oxide amount on the surface, and the PtCoRu/C MW and EG electrodes, both with RuO2 on their surfaces, were the most tolerant to methanol presence.Fil: Asteazaran, Mariano. UTN (Universidad Tecnológica Nacional). CITEMA (Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales). UNLP-CONICET. INIFTA (Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas); ArgentinaFil: Bengio, Silvina. CAB CNEA (Centro Atómico Bariloche, Comisión Nacional de Energía Atómica). CONICET; ArgentinaFil: Triaca, Walter. UNLP-CONICET. INIFTA (Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas); ArgentinaFil: Castro Luna, Ana. UTN (Universidad Tecnológica Nacional). CITEMA (Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales). UNLP-CONICET. INIFTA (Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas); ArgentinaPeer ReviewedSpringer2017-12-28T18:41:04Z2017-12-28T18:41:04Z2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfJournal of Applied Electrochemistryhttp://hdl.handle.net/20.500.12272/263010.1007/s10800-014-0748-1enghttps://link.springer.com/article/10.1007/s10800-014-0748-1info:eu-repo/semantics/openAccessAtribución (Attribution): En cualquier explotación de la obra autorizada por la licencia será necesario reconocer la autoría (obligatoria en todos los casos). No comercial (Non Commercial): La explotación de la obra queda limitada a usos no comerciales. Sin obras derivadas (No Derivate Works): La autorización para explotar la obra no incluye la posibilidad de crear una obra derivada (traducciones, adaptaciones, etc.).reponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacional2025-10-16T10:10:41Zoai:ria.utn.edu.ar:20.500.12272/2630instacron:UTNInstitucionalhttp://ria.utn.edu.ar/Universidad públicaNo correspondehttp://ria.utn.edu.ar/oaigestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:a2025-10-16 10:10:41.762Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv Methanol tolerant electrocatalysts for the oxygen reduction reaction
title Methanol tolerant electrocatalysts for the oxygen reduction reaction
spellingShingle Methanol tolerant electrocatalysts for the oxygen reduction reaction
Asteazaran, Mariano
ORR; PtCo/C; PtCoRu/C; Methanol crossover; DMFC; Methanol-tolerant cathode catalysts
title_short Methanol tolerant electrocatalysts for the oxygen reduction reaction
title_full Methanol tolerant electrocatalysts for the oxygen reduction reaction
title_fullStr Methanol tolerant electrocatalysts for the oxygen reduction reaction
title_full_unstemmed Methanol tolerant electrocatalysts for the oxygen reduction reaction
title_sort Methanol tolerant electrocatalysts for the oxygen reduction reaction
dc.creator.none.fl_str_mv Asteazaran, Mariano
Bengio, Silvina
Triaca, Walter
Castro Luna, Ana
author Asteazaran, Mariano
author_facet Asteazaran, Mariano
Bengio, Silvina
Triaca, Walter
Castro Luna, Ana
author_role author
author2 Bengio, Silvina
Triaca, Walter
Castro Luna, Ana
author2_role author
author
author
dc.subject.none.fl_str_mv ORR; PtCo/C; PtCoRu/C; Methanol crossover; DMFC; Methanol-tolerant cathode catalysts
topic ORR; PtCo/C; PtCoRu/C; Methanol crossover; DMFC; Methanol-tolerant cathode catalysts
dc.description.none.fl_txt_mv Direct methanol fuel cells (DMFCs) represent an interesting alternative in obtaining electricity in a clean and efficient way. Portable power sources are one of the most promising applications of passive DMFCs. One of the requirements in these devices is to use high alcohol concentration, which due to methanol crossover causes a considerable loss of fuel cell efficiency. In order to develop methanol tolerant cathodes with suitable activity, different supported catalysts namely PtCo/C and PtCoRu/C, were prepared either via ethylene glycol reduction (EG) with or without microwave heating assistance (MW) or via the alloy method, the latter followed by a thermal treatment in a reducing atmosphere (N2/H2). All cathode-catalysts were tested to determine the role of the components in simultaneously enhancing the oxygen reduction reaction (ORR) and discouraging the methanol oxidation reaction. According to the synthesis methodology, X-ray photoelectron spectra showed that the amount of metal oxides on the surface varies, being higher on the PtCo/C EG and PtCoRu/C EG catalysts. The electrochemical characterization of the catalysts was accomplished in a three electrodes electrochemical cell with a glassy carbon rotating disk electrode covered with a thin catalytic film as working electrode. To study the ORR and the influence of different methanol concentrations, linear sweep voltammetry and cyclic voltammetry were employed. The PtCo/C EG, with an important metal oxide amount on the surface, and the PtCoRu/C MW and EG electrodes, both with RuO2 on their surfaces, were the most tolerant to methanol presence.
Fil: Asteazaran, Mariano. UTN (Universidad Tecnológica Nacional). CITEMA (Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales). UNLP-CONICET. INIFTA (Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas); Argentina
Fil: Bengio, Silvina. CAB CNEA (Centro Atómico Bariloche, Comisión Nacional de Energía Atómica). CONICET; Argentina
Fil: Triaca, Walter. UNLP-CONICET. INIFTA (Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas); Argentina
Fil: Castro Luna, Ana. UTN (Universidad Tecnológica Nacional). CITEMA (Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales). UNLP-CONICET. INIFTA (Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas); Argentina
Peer Reviewed
description Direct methanol fuel cells (DMFCs) represent an interesting alternative in obtaining electricity in a clean and efficient way. Portable power sources are one of the most promising applications of passive DMFCs. One of the requirements in these devices is to use high alcohol concentration, which due to methanol crossover causes a considerable loss of fuel cell efficiency. In order to develop methanol tolerant cathodes with suitable activity, different supported catalysts namely PtCo/C and PtCoRu/C, were prepared either via ethylene glycol reduction (EG) with or without microwave heating assistance (MW) or via the alloy method, the latter followed by a thermal treatment in a reducing atmosphere (N2/H2). All cathode-catalysts were tested to determine the role of the components in simultaneously enhancing the oxygen reduction reaction (ORR) and discouraging the methanol oxidation reaction. According to the synthesis methodology, X-ray photoelectron spectra showed that the amount of metal oxides on the surface varies, being higher on the PtCo/C EG and PtCoRu/C EG catalysts. The electrochemical characterization of the catalysts was accomplished in a three electrodes electrochemical cell with a glassy carbon rotating disk electrode covered with a thin catalytic film as working electrode. To study the ORR and the influence of different methanol concentrations, linear sweep voltammetry and cyclic voltammetry were employed. The PtCo/C EG, with an important metal oxide amount on the surface, and the PtCoRu/C MW and EG electrodes, both with RuO2 on their surfaces, were the most tolerant to methanol presence.
publishDate 2015
dc.date.none.fl_str_mv 2015
2017-12-28T18:41:04Z
2017-12-28T18:41:04Z
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 Journal of Applied Electrochemistry
http://hdl.handle.net/20.500.12272/2630
10.1007/s10800-014-0748-1
identifier_str_mv Journal of Applied Electrochemistry
10.1007/s10800-014-0748-1
url http://hdl.handle.net/20.500.12272/2630
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://link.springer.com/article/10.1007/s10800-014-0748-1
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
Atribución (Attribution): En cualquier explotación de la obra autorizada por la licencia será necesario reconocer la autoría (obligatoria en todos los casos). No comercial (Non Commercial): La explotación de la obra queda limitada a usos no comerciales. Sin obras derivadas (No Derivate Works): La autorización para explotar la obra no incluye la posibilidad de crear una obra derivada (traducciones, adaptaciones, etc.).
eu_rights_str_mv openAccess
rights_invalid_str_mv Atribución (Attribution): En cualquier explotación de la obra autorizada por la licencia será necesario reconocer la autoría (obligatoria en todos los casos). No comercial (Non Commercial): La explotación de la obra queda limitada a usos no comerciales. Sin obras derivadas (No Derivate Works): La autorización para explotar la obra no incluye la posibilidad de crear una obra derivada (traducciones, adaptaciones, etc.).
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:Repositorio Institucional Abierto (UTN)
instname:Universidad Tecnológica Nacional
reponame_str Repositorio Institucional Abierto (UTN)
collection Repositorio Institucional Abierto (UTN)
instname_str Universidad Tecnológica Nacional
repository.name.fl_str_mv Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacional
repository.mail.fl_str_mv gestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.ar
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score 12.712165

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