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

Vista senzilla d'ítem
dc.contributor.authorGarcía Cardona, Julia
dc.contributor.authorSirés Sadornil, Ignacio
dc.contributor.authorAlcaide Monterrubio, Francisco
dc.contributor.authorBrillas, Enric
dc.contributor.authorCentellas Masuet, Francesc A.
dc.contributor.authorCabot Julià, Pere-Lluís
dc.date.accessioned2020-09-02T10:24:21Z
dc.date.available2022-01-30T06:10:18Z
dc.date.issued2020-01-30
dc.date.updated2020-09-02T10:24:21Z
dc.description.abstractPt(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.
dc.format.extent12 p.
dc.format.mimetypeapplication/pdf
dc.identifier.idgrec696024
dc.identifier.issn0360-3199
dc.identifier.urihttps://hdl.handle.net/2445/170099
dc.language.isoeng
dc.publisherElsevier Ltd
dc.relation.isformatofVersió postprint del document publicat a: https://doi.org/10.1016/j.ijhydene.2020.02.038
dc.relation.ispartofInternational Journal of Hydrogen Energy, 2020, vol. 45, num. 40, p. 20582-20593
dc.relation.urihttps://doi.org/10.1016/j.ijhydene.2020.02.038
dc.rightscc-by-nc-nd (c) Elsevier Ltd, 2020
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es
dc.sourceArticles publicats en revistes (Ciència dels Materials i Química Física)
dc.subject.classificationOxidació
dc.subject.classificationElectrocatàlisi
dc.subject.otherOxidation
dc.subject.otherElectrocatalysis
dc.titleElectrochemical performance of carbon-supported Pt(Cu) electrocatalysts for low-temperature fuel cells
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/acceptedVersion

Fitxers

Paquet original

Mostrant 1 - 1 de 1
Miniatura
Nom:
696024.pdf
Mida:
1.08 MB
Format:
Adobe Portable Document Format
Descarregar

Col·leccions

Articles publicats en revistes (Ciència dels Materials i Química Física)