dc Proton conductivity at low-frequency in nafion conductivity spectrum probed by time-resolved SAXS measurements and impedance spectroscopy

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dc.contributor.authorMATOS, BRUNO R.
dc.contributor.authorSANTIAGO, ELISABETE I.
dc.contributor.authorREY, JOSE F.Q.
dc.contributor.authorSCURACCHIO, CARLOS H.
dc.contributor.authorMANTOVANI, GERSON L.
dc.contributor.authorHIRANO, LAOS A.
dc.contributor.authorFONSECA, FABIO C.
dc.coverageInternacionalpt_BR
dc.date.accessioned2015-12-21T16:23:01Z
dc.date.available2015-12-21T16:23:01Z
dc.date.issued2015pt_BR
dc.description.abstractThe electric transport properties of Nafion membranes are investigated by impedance spectroscopy (IS) and correlated with small angle X-ray scattering (SAXS). Detailed IS measurements in a wide range of temperature and frequencies (f) allowed separating contributions from different charge carriers in Nafion. At controlled relative humidity and temperature, Nafion IS spectrum exhibits at T > 160 C two distinct frequencyindependent conductivities occurring at high f 106 Hz and low f < 1022 Hz. Such IS measurements were combined with timedependent SAXS measurements under applied dc electric potential, which provided compelling evidence that the low-f dc conductivity is related to the motion of protons via ion-hopping in hydrated Nafion membranes.
dc.format.extent822-828pt_BR
dc.identifier.citationMATOS, BRUNO R.; SANTIAGO, ELISABETE I.; REY, JOSE F.Q.; SCURACCHIO, CARLOS H.; MANTOVANI, GERSON L.; HIRANO, LAOS A.; FONSECA, FABIO C. dc Proton conductivity at low-frequency in nafion conductivity spectrum probed by time-resolved SAXS measurements and impedance spectroscopy. <b>Journal of Polymer Science</b>, v. 53, n. 11, p. 822-828, 2015. Part B. DOI: <a href="https://dx.doi.org/10.1002/polb.23704">10.1002/polb.23704</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/25352.
dc.identifier.doi10.1002/polb.23704
dc.identifier.fasciculo11pt_BR
dc.identifier.issn0887-6266pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-5972-5933
dc.identifier.orcidhttps://orcid.org/0000-0003-0708-2021
dc.identifier.percentilfi84.12
dc.identifier.suplementoPart Bpt_BR
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/25352
dc.identifier.vol53pt_BR
dc.relation.ispartofJournal of Polymer Sciencept_BR
dc.rightsclosedAccesspt_BR
dc.subjection exchange
dc.subjectmembranes
dc.subjectimpedance
dc.subjectspectroscopy
dc.subjectscattering
dc.subjectrelaxation
dc.subjectproton conductivity
dc.subjectsmall angle scattering
dc.titledc Proton conductivity at low-frequency in nafion conductivity spectrum probed by time-resolved SAXS measurements and impedance spectroscopypt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorELISABETE INACIO SANTIAGO
ipen.autorFABIO CORAL FONSECA
ipen.autorBRUNO RIBEIRO DE MATOS
ipen.codigoautor7110
ipen.codigoautor943
ipen.codigoautor3889
ipen.contributor.ipenauthorELISABETE INACIO SANTIAGO
ipen.contributor.ipenauthorFABIO CORAL FONSECA
ipen.contributor.ipenauthorBRUNO RIBEIRO DE MATOS
ipen.date.recebimento15-12pt_BR
ipen.identifier.fi3.318pt_BR
ipen.identifier.ipendoc21247pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.identifier.ods7
ipen.range.fi3.000 - 4.499
ipen.range.percentilfi75.00 - 100.00
ipen.type.genreArtigo
relation.isAuthorOfPublication50a00fb1-8bba-4a71-b902-63e72dfcc8c1
relation.isAuthorOfPublicationaa9a4b52-270e-4ea4-a566-a1107da1e0cf
relation.isAuthorOfPublicationd44ad1e7-4638-436d-a1cd-c2adaa2fc8b4
relation.isAuthorOfPublication.latestForDiscoveryd44ad1e7-4638-436d-a1cd-c2adaa2fc8b4
sigepi.autor.atividadeMATOS, BRUNO R.:3889:-1:S
sigepi.autor.atividadeSANTIAGO, ELISABETE I.:7110:610:N
sigepi.autor.atividadeFONSECA, FABIO C.:943:610:N

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