The catalytic activity of Pt:Ru nanoparticles for ethylene glycol and ethanol electrooxidation in a direct alcohol fuel cell

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dc.contributor.authorSILVA, JULIO C.M.pt_BR
dc.contributor.authorNTAIS, SPYRIDONpt_BR
dc.contributor.authorRAJARAMAN, VISHWANATHANpt_BR
dc.contributor.authorTEIXEIRA-NETO, ERICOpt_BR
dc.contributor.authorTEIXEIRA-NETO, ANGELA A.pt_BR
dc.contributor.authorNETO, ALMIR O.pt_BR
dc.contributor.authorANTONIASSI, RODOLFO M.pt_BR
dc.contributor.authorSPINACE, ESTEVAM V.pt_BR
dc.contributor.authorBARANOVA, ELENA A.pt_BR
dc.coverageInternacionalpt_BR
dc.date.accessioned2019-08-07T19:30:11Z
dc.date.available2019-08-07T19:30:11Z
dc.date.issued2019pt_BR
dc.description.abstractIn this study, we investigated the carbon-supported PtRu nanoparticles with atomic ratios of Pt:Ru of 100:0, 90:10, 70:30, and 50:50 for ethanol and ethylene glycol electrooxidation in alkaline media. The nanoparticles were synthesized using sodium borohydride method with 20 wt% of metals loading on carbon. The nanoparticle mean sizes were 7.3 nm, 5.7 nm, 5.2 nm, and 5.1 nm for Pt/C, Pt90Ru10/C, Pt70Ru30/C, and Pt50Ru50/C, respectively. X-ray diffraction (XRD) analysis revealed that Pt and PtRu electrocatalysts have face-centered cubic (fcc) structure and suggests the alloy formation for all PtRu/C materials, which was further supported by the X-ray photoelectron spectroscopy (XPS). Based on XPS analysis, Pt50Ru50/C has higher amount of Pt oxides on the surface than Pt70Ru30/C. Electrochemical results demonstrated that the addition of Ru to Pt enhances the catalytic activity towards ethanol and ethylene glycol electrooxidadion. The catalyst of Pt50Ru50/C composition showed the lowest onset potential for ethanol and ethylene glycol electrooxidation, which were 160 and 70 mV lower than for Pt/C, respectively. Furthermore, this catalyst outperformed Pt/C and other PtRu/C compositions in chronoamperometric and direct alcohol fuel cell (DAFC) experiments. DAFC experiments using Pt50Ru50/C as anode had the power density 40 and 14% higher than using Pt/C for ethanol and ethylene glycol, respectively. The promotion is due to the bi-functional mechanism and/or electronic effect of two metals in the alloy.pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipIDFAPESP: 14/09087-4; 14/09868-6pt_BR
dc.format.extent203-213pt_BR
dc.identifier.citationSILVA, JULIO C.M.; NTAIS, SPYRIDON; RAJARAMAN, VISHWANATHAN; TEIXEIRA-NETO, ERICO; TEIXEIRA-NETO, ANGELA A.; NETO, ALMIR O.; ANTONIASSI, RODOLFO M.; SPINACE, ESTEVAM V.; BARANOVA, ELENA A. The catalytic activity of Pt:Ru nanoparticles for ethylene glycol and ethanol electrooxidation in a direct alcohol fuel cell. <b>Electrocatalysis</b>, v. 10, n. 3, p. 203-213, 2019. DOI: <a href="https://dx.doi.org/10.1007/s12678-019-00515-8">10.1007/s12678-019-00515-8</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/30038.
dc.identifier.doi10.1007/s12678-019-00515-8pt_BR
dc.identifier.fasciculo3pt_BR
dc.identifier.issn1868-2529pt_BR
dc.identifier.orcid0000-0002-7011-8261pt_BR
dc.identifier.orcid0000-0001-8745-3421pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7011-8261
dc.identifier.orcidhttps://orcid.org/0000-0002-9287-6071
dc.identifier.percentilfi45.003pt_BR
dc.identifier.percentilfiCiteScore55.00
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/30038
dc.identifier.vol10pt_BR
dc.relation.ispartofElectrocatalysispt_BR
dc.rightsopenAccesspt_BR
dc.subjectnanoparticles
dc.subjectelectrocatalysts
dc.subjectoxidation
dc.subjectethanol
dc.subjectethylene glycols
dc.subjectelectrochemical corrosion
dc.subjectfuel cells
dc.subjectdirect ethanol fuel cells
dc.titleThe catalytic activity of Pt:Ru nanoparticles for ethylene glycol and ethanol electrooxidation in a direct alcohol fuel cellpt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorRODOLFO MOLINA ANTONIASSI
ipen.autorESTEVAM VITORIO SPINACE
ipen.autorALMIR OLIVEIRA NETO
ipen.codigoautor10166
ipen.codigoautor555
ipen.codigoautor3541
ipen.contributor.ipenauthorRODOLFO MOLINA ANTONIASSI
ipen.contributor.ipenauthorESTEVAM VITORIO SPINACE
ipen.contributor.ipenauthorALMIR OLIVEIRA NETO
ipen.date.recebimento19-08
ipen.identifier.fi2.587pt_BR
ipen.identifier.fiCiteScore3.9
ipen.identifier.ipendoc25831pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.identifier.ods7
ipen.range.fi1.500 - 2.999
ipen.range.percentilfi25.00 - 49.99
ipen.type.genreArtigo
relation.isAuthorOfPublicationae1e5fd0-06cd-4131-a981-827c9445f077
relation.isAuthorOfPublicationb0db71ff-181e-47eb-858d-42e12ef2a93e
relation.isAuthorOfPublication13be55b2-f917-45c4-bc6b-5f315bd0290f
relation.isAuthorOfPublication.latestForDiscovery13be55b2-f917-45c4-bc6b-5f315bd0290f
sigepi.autor.atividadeSPINACE, ESTEVAM V.:555:610:Npt_BR
sigepi.autor.atividadeANTONIASSI, RODOLFO M.:10166:610:Npt_BR
sigepi.autor.atividadeNETO, ALMIR O.:3541:610:Npt_BR
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