Methanol tolerant electrocatalysts for the oxygen reduction reaction

Autores
Asteazaran, Mariano; Bengió, Silvina; Triaca, Walter Enrique; Castro Luna Berenguer, Ana Maria del Carmen
Año de publicación
2014
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. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas. Universidad Nacional de la Plata. Facultad de Cs.exactas. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas; Argentina
Fil: Bengió, Silvina. Comision Nacional de Energia Atomica. Centro Atomico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Triaca, Walter Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas. Universidad Nacional de la Plata. Facultad de Cs.exactas. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas; Argentina
Fil: Castro Luna Berenguer, Ana Maria del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas. Universidad Nacional de la Plata. Facultad de Cs.exactas. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas; Argentina. Universidad Tecnológica Nacional. Facultad Regional La Plata. Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales; Argentina
Materia
Orr
Ptco/C
Ptcoru/C
Methanol Crossover
Dmfc
Methanol-Tolerant Cathode Catalysts
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:11336/17202
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/17202
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Methanol tolerant electrocatalysts for the oxygen reduction reactionAsteazaran, MarianoBengió, SilvinaTriaca, Walter EnriqueCastro Luna Berenguer, Ana Maria del CarmenOrrPtco/CPtcoru/CMethanol CrossoverDmfcMethanol-Tolerant Cathode Catalystshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Direct 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. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas. Universidad Nacional de la Plata. Facultad de Cs.exactas. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas; ArgentinaFil: Bengió, Silvina. Comision Nacional de Energia Atomica. Centro Atomico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Triaca, Walter Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas. Universidad Nacional de la Plata. Facultad de Cs.exactas. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas; ArgentinaFil: Castro Luna Berenguer, Ana Maria del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas. Universidad Nacional de la Plata. Facultad de Cs.exactas. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas; Argentina. Universidad Tecnológica Nacional. Facultad Regional La Plata. Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales; ArgentinaSpringer2014-09-18info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/17202Asteazaran, Mariano; Bengió, Silvina; Triaca, Walter Enrique; Castro Luna Berenguer, Ana Maria del Carmen; Methanol tolerant electrocatalysts for the oxygen reduction reaction; Springer; Journal Of Applied Electrochemistry; 44; 12; 18-9-2014; 1271-12780021-891Xenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s10800-014-0748-1info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10800-014-0748-1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:00:21Zoai:ri.conicet.gov.ar:11336/17202instacron: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:34982025-09-03 10:00:22.044CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
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
Bengió, Silvina
Triaca, Walter Enrique
Castro Luna Berenguer, Ana Maria del Carmen
author Asteazaran, Mariano
author_facet Asteazaran, Mariano
Bengió, Silvina
Triaca, Walter Enrique
Castro Luna Berenguer, Ana Maria del Carmen
author_role author
author2 Bengió, Silvina
Triaca, Walter Enrique
Castro Luna Berenguer, Ana Maria del Carmen
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
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
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. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas. Universidad Nacional de la Plata. Facultad de Cs.exactas. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas; Argentina
Fil: Bengió, Silvina. Comision Nacional de Energia Atomica. Centro Atomico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Triaca, Walter Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas. Universidad Nacional de la Plata. Facultad de Cs.exactas. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas; Argentina
Fil: Castro Luna Berenguer, Ana Maria del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas. Universidad Nacional de la Plata. Facultad de Cs.exactas. Instituto de Investigaciones Fisico-químicas Teóricas y Aplicadas; Argentina. Universidad Tecnológica Nacional. Facultad Regional La Plata. Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales; Argentina
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 2014
dc.date.none.fl_str_mv 2014-09-18
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/11336/17202
Asteazaran, Mariano; Bengió, Silvina; Triaca, Walter Enrique; Castro Luna Berenguer, Ana Maria del Carmen; Methanol tolerant electrocatalysts for the oxygen reduction reaction; Springer; Journal Of Applied Electrochemistry; 44; 12; 18-9-2014; 1271-1278
0021-891X
url http://hdl.handle.net/11336/17202
identifier_str_mv Asteazaran, Mariano; Bengió, Silvina; Triaca, Walter Enrique; Castro Luna Berenguer, Ana Maria del Carmen; Methanol tolerant electrocatalysts for the oxygen reduction reaction; Springer; Journal Of Applied Electrochemistry; 44; 12; 18-9-2014; 1271-1278
0021-891X
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s10800-014-0748-1
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10800-014-0748-1
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
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
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
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