Molybdenum carbide-based electrocatalysts for CO tolerance in proton exchange membrane fuel cell anodes

Autores
Hassan, Ayaz; Paganin, Valdecir Antonio; Carreras, Alejo Cristian; Ticianelli, Edson Antonio
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The activity, stability and CO tolerance of molybdenum carbide-based electrocatalyts were studied in anodes of proton exchange membrane fuel cells (PEMFCs). To this purpose, carbon-supported molybdenum carbide (Mo 2C/C) was prepared by an ultrasonic method, and was used as catalyst support in the anode of a PEMFC. Pt and PtMo nanoparticles were deposited on this Mo2C/C by the formic acid reduction method. The physical properties of the resulting electrocatalysts were studied by X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), X-ray absorption near edge structure (XANES), scanning electron microscopy (SEM) and wavelength dispersive spectroscopy (WDS). Electrochemical characterizations were carried out by single cell polarization measurements, CO stripping, cyclic voltammetry (CV) and online mass spectrometry (OLMS). CV and OLMS experiments were performed to evaluate the stability and CO tolerance of the electrocatalysts. The results obtained for the carbide-based electrocatalysts were compared with those obtained for carbon-supported PtMo and Pt electrocatalysts. It was observed that Pt and PtMo supported on Mo 2C/C present a better stability than PtMo supported on carbon. CV and WDS results evidenced a partial dissolution of Mo from the anode and its migration toward cathode during the cell operation. On the basis of polarization measurements and cyclic voltammograms, it was concluded that the stability of anode electrocatalysts can be improved by the use of molybdenum carbide as catalyst support.
Fil: Hassan, Ayaz. Instituto de Química ; Universidade Do Sao Paulo;
Fil: Paganin, Valdecir Antonio. Instituto de Química ; Universidade Do Sao Paulo;
Fil: Carreras, Alejo Cristian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Ticianelli, Edson Antonio. Instituto de Química ; Universidade Do Sao Paulo;
Materia
CO TOLERANCE
MOLYBDENUM CARBIDE
PEMFC
STABILITY
ULTRA-SONICATION
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:11336/185728

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oai_identifier_str oai:ri.conicet.gov.ar:11336/185728
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Molybdenum carbide-based electrocatalysts for CO tolerance in proton exchange membrane fuel cell anodesHassan, AyazPaganin, Valdecir AntonioCarreras, Alejo CristianTicianelli, Edson AntonioCO TOLERANCEMOLYBDENUM CARBIDEPEMFCSTABILITYULTRA-SONICATIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The activity, stability and CO tolerance of molybdenum carbide-based electrocatalyts were studied in anodes of proton exchange membrane fuel cells (PEMFCs). To this purpose, carbon-supported molybdenum carbide (Mo 2C/C) was prepared by an ultrasonic method, and was used as catalyst support in the anode of a PEMFC. Pt and PtMo nanoparticles were deposited on this Mo2C/C by the formic acid reduction method. The physical properties of the resulting electrocatalysts were studied by X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), X-ray absorption near edge structure (XANES), scanning electron microscopy (SEM) and wavelength dispersive spectroscopy (WDS). Electrochemical characterizations were carried out by single cell polarization measurements, CO stripping, cyclic voltammetry (CV) and online mass spectrometry (OLMS). CV and OLMS experiments were performed to evaluate the stability and CO tolerance of the electrocatalysts. The results obtained for the carbide-based electrocatalysts were compared with those obtained for carbon-supported PtMo and Pt electrocatalysts. It was observed that Pt and PtMo supported on Mo 2C/C present a better stability than PtMo supported on carbon. CV and WDS results evidenced a partial dissolution of Mo from the anode and its migration toward cathode during the cell operation. On the basis of polarization measurements and cyclic voltammograms, it was concluded that the stability of anode electrocatalysts can be improved by the use of molybdenum carbide as catalyst support.Fil: Hassan, Ayaz. Instituto de Química ; Universidade Do Sao Paulo;Fil: Paganin, Valdecir Antonio. Instituto de Química ; Universidade Do Sao Paulo;Fil: Carreras, Alejo Cristian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaFil: Ticianelli, Edson Antonio. Instituto de Química ; Universidade Do Sao Paulo;Pergamon-Elsevier Science Ltd2014-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/185728Hassan, Ayaz; Paganin, Valdecir Antonio; Carreras, Alejo Cristian; Ticianelli, Edson Antonio; Molybdenum carbide-based electrocatalysts for CO tolerance in proton exchange membrane fuel cell anodes; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 142; 10-2014; 307-3160013-4686CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013468614015667info:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2014.07.142info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:37:01Zoai:ri.conicet.gov.ar:11336/185728instacron: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 09:37:01.309CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Molybdenum carbide-based electrocatalysts for CO tolerance in proton exchange membrane fuel cell anodes
title Molybdenum carbide-based electrocatalysts for CO tolerance in proton exchange membrane fuel cell anodes
spellingShingle Molybdenum carbide-based electrocatalysts for CO tolerance in proton exchange membrane fuel cell anodes
Hassan, Ayaz
CO TOLERANCE
MOLYBDENUM CARBIDE
PEMFC
STABILITY
ULTRA-SONICATION
title_short Molybdenum carbide-based electrocatalysts for CO tolerance in proton exchange membrane fuel cell anodes
title_full Molybdenum carbide-based electrocatalysts for CO tolerance in proton exchange membrane fuel cell anodes
title_fullStr Molybdenum carbide-based electrocatalysts for CO tolerance in proton exchange membrane fuel cell anodes
title_full_unstemmed Molybdenum carbide-based electrocatalysts for CO tolerance in proton exchange membrane fuel cell anodes
title_sort Molybdenum carbide-based electrocatalysts for CO tolerance in proton exchange membrane fuel cell anodes
dc.creator.none.fl_str_mv Hassan, Ayaz
Paganin, Valdecir Antonio
Carreras, Alejo Cristian
Ticianelli, Edson Antonio
author Hassan, Ayaz
author_facet Hassan, Ayaz
Paganin, Valdecir Antonio
Carreras, Alejo Cristian
Ticianelli, Edson Antonio
author_role author
author2 Paganin, Valdecir Antonio
Carreras, Alejo Cristian
Ticianelli, Edson Antonio
author2_role author
author
author
dc.subject.none.fl_str_mv CO TOLERANCE
MOLYBDENUM CARBIDE
PEMFC
STABILITY
ULTRA-SONICATION
topic CO TOLERANCE
MOLYBDENUM CARBIDE
PEMFC
STABILITY
ULTRA-SONICATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The activity, stability and CO tolerance of molybdenum carbide-based electrocatalyts were studied in anodes of proton exchange membrane fuel cells (PEMFCs). To this purpose, carbon-supported molybdenum carbide (Mo 2C/C) was prepared by an ultrasonic method, and was used as catalyst support in the anode of a PEMFC. Pt and PtMo nanoparticles were deposited on this Mo2C/C by the formic acid reduction method. The physical properties of the resulting electrocatalysts were studied by X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), X-ray absorption near edge structure (XANES), scanning electron microscopy (SEM) and wavelength dispersive spectroscopy (WDS). Electrochemical characterizations were carried out by single cell polarization measurements, CO stripping, cyclic voltammetry (CV) and online mass spectrometry (OLMS). CV and OLMS experiments were performed to evaluate the stability and CO tolerance of the electrocatalysts. The results obtained for the carbide-based electrocatalysts were compared with those obtained for carbon-supported PtMo and Pt electrocatalysts. It was observed that Pt and PtMo supported on Mo 2C/C present a better stability than PtMo supported on carbon. CV and WDS results evidenced a partial dissolution of Mo from the anode and its migration toward cathode during the cell operation. On the basis of polarization measurements and cyclic voltammograms, it was concluded that the stability of anode electrocatalysts can be improved by the use of molybdenum carbide as catalyst support.
Fil: Hassan, Ayaz. Instituto de Química ; Universidade Do Sao Paulo;
Fil: Paganin, Valdecir Antonio. Instituto de Química ; Universidade Do Sao Paulo;
Fil: Carreras, Alejo Cristian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Ticianelli, Edson Antonio. Instituto de Química ; Universidade Do Sao Paulo;
description The activity, stability and CO tolerance of molybdenum carbide-based electrocatalyts were studied in anodes of proton exchange membrane fuel cells (PEMFCs). To this purpose, carbon-supported molybdenum carbide (Mo 2C/C) was prepared by an ultrasonic method, and was used as catalyst support in the anode of a PEMFC. Pt and PtMo nanoparticles were deposited on this Mo2C/C by the formic acid reduction method. The physical properties of the resulting electrocatalysts were studied by X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), X-ray absorption near edge structure (XANES), scanning electron microscopy (SEM) and wavelength dispersive spectroscopy (WDS). Electrochemical characterizations were carried out by single cell polarization measurements, CO stripping, cyclic voltammetry (CV) and online mass spectrometry (OLMS). CV and OLMS experiments were performed to evaluate the stability and CO tolerance of the electrocatalysts. The results obtained for the carbide-based electrocatalysts were compared with those obtained for carbon-supported PtMo and Pt electrocatalysts. It was observed that Pt and PtMo supported on Mo 2C/C present a better stability than PtMo supported on carbon. CV and WDS results evidenced a partial dissolution of Mo from the anode and its migration toward cathode during the cell operation. On the basis of polarization measurements and cyclic voltammograms, it was concluded that the stability of anode electrocatalysts can be improved by the use of molybdenum carbide as catalyst support.
publishDate 2014
dc.date.none.fl_str_mv 2014-10
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/11336/185728
Hassan, Ayaz; Paganin, Valdecir Antonio; Carreras, Alejo Cristian; Ticianelli, Edson Antonio; Molybdenum carbide-based electrocatalysts for CO tolerance in proton exchange membrane fuel cell anodes; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 142; 10-2014; 307-316
0013-4686
CONICET Digital
CONICET
url http://hdl.handle.net/11336/185728
identifier_str_mv Hassan, Ayaz; Paganin, Valdecir Antonio; Carreras, Alejo Cristian; Ticianelli, Edson Antonio; Molybdenum carbide-based electrocatalysts for CO tolerance in proton exchange membrane fuel cell anodes; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 142; 10-2014; 307-316
0013-4686
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013468614015667
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2014.07.142
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
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
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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