Publicação:
Dependence on composition of electronic properties and stability of Pt-Fe/C catalysts for oxygen reduction

Página do item simplificado
dc.contributor.authorMalheiro, A. R. [UNESP]
dc.contributor.authorPerez, J. [UNESP]
dc.contributor.authorVillullas, Hebe de Las Mercedes [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:18:24Z
dc.date.available2014-05-20T14:18:24Z
dc.date.issued2010-11-01
dc.description.abstractThis work presents studies of electronic characteristics and alloy stability carried out for Pt-Fe/C catalysts of different compositions (10-50% Fe, in atoms) and same particle size. The electronic properties are characterized by in situ dispersive X-ray absorption spectroscopy (DXAS). The results show a steady decrease in Pt d-band occupancy as the amount of Fe in the alloy increases. The alloy stability is evaluated by prolonged potential cycling up to 1.0 V. Catalysts with Fe content up to 30% show good stabilities and keep their activities for oxygen reduction after prolonged cycling. In contrast, catalysts with Fe content above 30% suffer pronounced Fe leaching. (C) 2010 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista UNESP, Dept Fis Quim, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista UNESP, Dept Fis Quim, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFinanciadora de Estudos e Projetos (FINEP)
dc.description.sponsorshipIdFAPESP: 07/54434-0
dc.description.sponsorshipIdCNPq: 480662/2007-0
dc.description.sponsorshipIdCNPq: 305106/2007-4
dc.description.sponsorshipIdCNPq: 151917/2008-6
dc.description.sponsorshipIdCNPq: 131775/2007-3
dc.description.sponsorshipIdFINEP: 01.06.0939.00
dc.format.extent7255-7258
dc.identifierhttp://dx.doi.org/10.1016/j.jpowsour.2010.05.036
dc.identifier.citationJournal of Power Sources. Amsterdam: Elsevier B.V., v. 195, n. 21, p. 7255-7258, 2010.
dc.identifier.doi10.1016/j.jpowsour.2010.05.036
dc.identifier.issn0378-7753
dc.identifier.lattes0967996519065806
dc.identifier.urihttp://hdl.handle.net/11449/25537
dc.identifier.wosWOS:000280569000022
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Power Sources
dc.relation.ispartofjcr6.945
dc.relation.ispartofsjr2,202
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectPt-based electrocatalysten
dc.subjectBimetallic nanoparticlesen
dc.subjectCatalyst stabilityen
dc.subjectOxygen reductionen
dc.subjectNanostructured cathode materialsen
dc.titleDependence on composition of electronic properties and stability of Pt-Fe/C catalysts for oxygen reductionen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.author.lattes0967996519065806
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentFísico-Química - IQARpt

Arquivos

Licença do Pacote

Agora exibindo 1 - 2 de 2
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Araraquara - IQAR - Instituto de Química