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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/185728
Ver los metadatos del registro completo
id |
CONICETDig_83946504f0b2c266dc0b5b4b68195703 |
---|---|
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 |
_version_ |
1844613164498419712 |
score |
13.070432 |