Proton and cesium conductivity in perfluorosulfonate ionomers at low and high relative humidity

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dc.contributor.authorMATOS, BRUNO R.
dc.contributor.authorSILVA, JAQUELINE S. da
dc.contributor.authorSANTIAGO, ELISABETH I.
dc.contributor.authorPARRA, DUCLERC F.
dc.contributor.authorCARASTAN, DANILO J.
dc.contributor.authorFLORIO, DANIEL Z. de
dc.contributor.authorANDRADA, HEBER E.
dc.contributor.authorCARRERAS, ALEJO C.
dc.contributor.authorFONSECA, FABIO C.
dc.coverageInternacionalpt_BR
dc.date.accessioned2017-09-20T13:16:50Z
dc.date.available2017-09-20T13:16:50Z
dc.date.issued2017pt_BR
dc.description.abstractNafion exhibits one of the highest proton conductivity at room temperature and it is the standard electrolyte of proton exchange membrane fuel cells (PEMFC). However, the temperature dependence of ionic conductivity of Nation is highly dependent on the measuring conditions and it is still a matter of debate. In the present study, detailed dielectric spectroscopy (DS) measurements in both dry (under N2 flow) and water-saturated conditions were carried out in a broad range of temperature and frequency. Such DS results were correlated to differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) data taken in similar conditions. The main results revealed that in samples conditioned in N2 flow (RH ~0%) the transport of both proton and cesiumions is coordinated with the dynamics of Nafion relaxations. In hydrated Nafion (proton form), conductivity measurements at different frequencies revealed two regimes: one at high-frequency, in which the Vogel-Tamman- Fulcher (VTF) law indicates a close relation between the polymer glass transition temperature Tg; and, a second one at low frequency, bearing great similarity to the transport observed in nearly dry samples. The reported experimental results contribute to disentangle the intricate transport properties of Nafion.pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipIDFAPESP: 13/50151-5; 14/09087-4; 14/ 50279-4pt_BR
dc.description.sponsorshipIDCNPq: 311803/2015-6pt_BR
dc.format.extent86-94pt_BR
dc.identifier.citationMATOS, BRUNO R.; SILVA, JAQUELINE S. da; SANTIAGO, ELISABETH I.; PARRA, DUCLERC F.; CARASTAN, DANILO J.; FLORIO, DANIEL Z. de; ANDRADA, HEBER E.; CARRERAS, ALEJO C.; FONSECA, FABIO C. Proton and cesium conductivity in perfluorosulfonate ionomers at low and high relative humidity. <b>Solid State Ionics</b>, v. 301, p. 86-94, 2017. DOI: <a href="https://dx.doi.org/10.1016/j.ssi.2017.01.019">10.1016/j.ssi.2017.01.019</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/27754.
dc.identifier.doi10.1016/j.ssi.2017.01.019pt_BR
dc.identifier.issn0167-2738pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0708-2021
dc.identifier.orcidhttps://orcid.org/0000-0002-7626-880X
dc.identifier.percentilfi58.48en
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/27754
dc.identifier.vol301pt_BR
dc.relation.ispartofSolid State Ionicspt_BR
dc.rightsopenAccesspt_BR
dc.subjectproton conductivity
dc.subjectcesium
dc.subjectmembranes
dc.subjectcharge transport
dc.subjectelectrochemistry
dc.subjections
dc.subjectpolymers
dc.titleProton and cesium conductivity in perfluorosulfonate ionomers at low and high relative humiditypt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorJAQUELINE DE SOUZA DA SILVA
ipen.autorFABIO CORAL FONSECA
ipen.autorDANIEL ZANETTI DE FLORIO
ipen.autorDUCLERC FERNANDES PARRA
ipen.autorBRUNO RIBEIRO DE MATOS
ipen.codigoautor14325
ipen.codigoautor943
ipen.codigoautor1700
ipen.codigoautor562
ipen.codigoautor3889
ipen.contributor.ipenauthorJAQUELINE DE SOUZA DA SILVA
ipen.contributor.ipenauthorFABIO CORAL FONSECA
ipen.contributor.ipenauthorDANIEL ZANETTI DE FLORIO
ipen.contributor.ipenauthorDUCLERC FERNANDES PARRA
ipen.contributor.ipenauthorBRUNO RIBEIRO DE MATOS
ipen.date.recebimento17-09pt_BR
ipen.identifier.fi2.751pt_BR
ipen.identifier.ipendoc23078pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.identifier.ods7
ipen.range.fi1.500 - 2.999
ipen.range.percentilfi50.00 - 74.99
ipen.type.genreArtigo
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sigepi.autor.atividadeMATOS, BRUNO R.:3889:610:Spt_BR
sigepi.autor.atividadeSILVA, JAQUELINE S. da:14325:610:Npt_BR
sigepi.autor.atividadePARRA, DUCLERC F.:562:740:Npt_BR
sigepi.autor.atividadeFLORIO, DANIEL Z. DE:1700:720:Npt_BR
sigepi.autor.atividadeFONSECA, FABIO C.:943:610:Npt_BR
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