Electrochemical performance of carbon-supported Pt(Cu) electrocatalysts for low-temperature fuel cells

Pt(Cu) nanoparticles supported on carbon nanofibers (CNFs), multi-walled carbon nanotubes (MWCNTs) and Vulcan carbon XC72, have been synthesized by electroless deposition and galvanic exchange. The structural analyses show contracted Pt fcc lattices due to the formation of a PtCu alloy core covered...

Descripción completa

Detalles Bibliográficos
Autores: García Cardona, Julia, Sirés Sadornil, Ignacio, Alcaide Monterrubio, Francisco, Brillas, Enric, Centellas Masuet, Francesc A., Cabot Julià, Pere-Lluís
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2020
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/170099
Acceso en línea:https://hdl.handle.net/2445/170099
Access Level:acceso abierto
Palabra clave:Oxidació
Electrocatàlisi
Oxidation
Electrocatalysis
id ES_1e71ba8733fa0fa032c3028f4ff74086
oai_identifier_str oai:recercat.cat:2445/170099
network_acronym_str ES
network_name_str España
repository_id_str
spelling Electrochemical performance of carbon-supported Pt(Cu) electrocatalysts for low-temperature fuel cellsGarcía Cardona, JuliaSirés Sadornil, IgnacioAlcaide Monterrubio, FranciscoBrillas, EnricCentellas Masuet, Francesc A.Cabot Julià, Pere-LluísOxidacióElectrocatàlisiOxidationElectrocatalysisPt(Cu) nanoparticles supported on carbon nanofibers (CNFs), multi-walled carbon nanotubes (MWCNTs) and Vulcan carbon XC72, have been synthesized by electroless deposition and galvanic exchange. The structural analyses show contracted Pt fcc lattices due to the formation of a PtCu alloy core covered by a Pt-rich shell, mean crystallite sizes of about 3 nm, as well as good dispersion and carbon attachment. The electrochemical surface areas (ECSAs) of Pt(Cu)/CNF and Pt(Cu)/XC72 are comparable to those of commercial Pt/C and PtCu/C. The Pt(Cu) electrocatalysts show more negative onset potentials for CO oxidation than Pt/C and PtCu/C, thus indicating their greater CO tolerance. Pt(Cu)/CNF and Pt(Cu)/MWCNT present the highest mass activity and specific activity for the O2 reduction, respectively, both with better relative stability than Pt(Cu)/XC72. Pt(Cu)/CNF and Pt(Cu)/MWCNT are then considered good cathode catalysts, yielding estimated savings of about 50 wt.% Pt, when applied to low-temperature fuel cells.Elsevier Ltd2020202220202020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion12 p.application/pdfhttps://hdl.handle.net/2445/170099Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1016/j.ijhydene.2020.02.038International Journal of Hydrogen Energy, 2020, vol. 45, num. 40, p. 20582-20593https://doi.org/10.1016/j.ijhydene.2020.02.038cc-by-nc-nd (c) Elsevier Ltd, 2020http://creativecommons.org/licenses/by-nc-nd/3.0/esinfo:eu-repo/semantics/openAccessoai:recercat.cat:2445/1700992026-05-29T05:05:01Z
dc.title.none.fl_str_mv Electrochemical performance of carbon-supported Pt(Cu) electrocatalysts for low-temperature fuel cells
title Electrochemical performance of carbon-supported Pt(Cu) electrocatalysts for low-temperature fuel cells
spellingShingle Electrochemical performance of carbon-supported Pt(Cu) electrocatalysts for low-temperature fuel cells
García Cardona, Julia
Oxidació
Electrocatàlisi
Oxidation
Electrocatalysis
title_short Electrochemical performance of carbon-supported Pt(Cu) electrocatalysts for low-temperature fuel cells
title_full Electrochemical performance of carbon-supported Pt(Cu) electrocatalysts for low-temperature fuel cells
title_fullStr Electrochemical performance of carbon-supported Pt(Cu) electrocatalysts for low-temperature fuel cells
title_full_unstemmed Electrochemical performance of carbon-supported Pt(Cu) electrocatalysts for low-temperature fuel cells
title_sort Electrochemical performance of carbon-supported Pt(Cu) electrocatalysts for low-temperature fuel cells
dc.creator.none.fl_str_mv García Cardona, Julia
Sirés Sadornil, Ignacio
Alcaide Monterrubio, Francisco
Brillas, Enric
Centellas Masuet, Francesc A.
Cabot Julià, Pere-Lluís
author García Cardona, Julia
author_facet García Cardona, Julia
Sirés Sadornil, Ignacio
Alcaide Monterrubio, Francisco
Brillas, Enric
Centellas Masuet, Francesc A.
Cabot Julià, Pere-Lluís
author_role author
author2 Sirés Sadornil, Ignacio
Alcaide Monterrubio, Francisco
Brillas, Enric
Centellas Masuet, Francesc A.
Cabot Julià, Pere-Lluís
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Oxidació
Electrocatàlisi
Oxidation
Electrocatalysis
topic Oxidació
Electrocatàlisi
Oxidation
Electrocatalysis
description Pt(Cu) nanoparticles supported on carbon nanofibers (CNFs), multi-walled carbon nanotubes (MWCNTs) and Vulcan carbon XC72, have been synthesized by electroless deposition and galvanic exchange. The structural analyses show contracted Pt fcc lattices due to the formation of a PtCu alloy core covered by a Pt-rich shell, mean crystallite sizes of about 3 nm, as well as good dispersion and carbon attachment. The electrochemical surface areas (ECSAs) of Pt(Cu)/CNF and Pt(Cu)/XC72 are comparable to those of commercial Pt/C and PtCu/C. The Pt(Cu) electrocatalysts show more negative onset potentials for CO oxidation than Pt/C and PtCu/C, thus indicating their greater CO tolerance. Pt(Cu)/CNF and Pt(Cu)/MWCNT present the highest mass activity and specific activity for the O2 reduction, respectively, both with better relative stability than Pt(Cu)/XC72. Pt(Cu)/CNF and Pt(Cu)/MWCNT are then considered good cathode catalysts, yielding estimated savings of about 50 wt.% Pt, when applied to low-temperature fuel cells.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/170099
url https://hdl.handle.net/2445/170099
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1016/j.ijhydene.2020.02.038
International Journal of Hydrogen Energy, 2020, vol. 45, num. 40, p. 20582-20593
https://doi.org/10.1016/j.ijhydene.2020.02.038
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier Ltd, 2020
http://creativecommons.org/licenses/by-nc-nd/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier Ltd, 2020
http://creativecommons.org/licenses/by-nc-nd/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 12 p.
application/pdf
dc.publisher.none.fl_str_mv Elsevier Ltd
publisher.none.fl_str_mv Elsevier Ltd
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869404341456076800
score 15.812429

Similares en LA Referencia