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dc.contributor.author
Matos, Bruno R.
dc.contributor.author
da Silva, Jaqueline S.
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Santiago, Elisabete I.
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Parra, Duclerc F.
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Carastan, Danilo J.
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de Florio, Daniel Z.
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Andrada, Heber Eduardo
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Carreras, Alejo Cristian
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Fonseca, Fabio C.
dc.date.available
2018-11-16T19:44:19Z
dc.date.issued
2017-03
dc.identifier.citation
Matos, Bruno R.; da Silva, Jaqueline S.; Santiago, Elisabete I.; Parra, Duclerc F.; Carastan, Danilo J.; et al.; Proton and cesium conductivity in perfluorosulfonate ionomers at low and high relative humidity; Elsevier Science; Solid State Ionics; 301; 3-2017; 86-94
dc.identifier.issn
0167-2738
dc.identifier.uri
http://hdl.handle.net/11336/64649
dc.description.abstract
Nafion 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 cesium ions 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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Charge Transport
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Electrochemistry
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Ionomers
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Membranes
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Otras Ciencias Químicas
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Proton and cesium conductivity in perfluorosulfonate ionomers at low and high relative humidity
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-10-22T18:37:40Z
dc.identifier.eissn
1872-7689
dc.journal.volume
301
dc.journal.pagination
86-94
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Matos, Bruno R.. Comissao Nacional de Energia Nuclear. Centro de Lasers e Aplicacoes. Instituto de Pesquisas Energeticas e Nucleares.; Brasil
dc.description.fil
Fil: da Silva, Jaqueline S.. Comissao Nacional de Energia Nuclear. Centro de Lasers e Aplicacoes. Instituto de Pesquisas Energeticas e Nucleares.; Brasil
dc.description.fil
Fil: Santiago, Elisabete I.. Comissao Nacional de Energia Nuclear. Centro de Lasers e Aplicacoes. Instituto de Pesquisas Energeticas e Nucleares.; Brasil
dc.description.fil
Fil: Parra, Duclerc F.. Comissao Nacional de Energia Nuclear. Centro de Lasers e Aplicacoes. Instituto de Pesquisas Energeticas e Nucleares.; Brasil
dc.description.fil
Fil: Carastan, Danilo J.. Universidade Federal do ABC; Brasil
dc.description.fil
Fil: de Florio, Daniel Z.. Universidade Federal do ABC; Brasil
dc.description.fil
Fil: Andrada, Heber Eduardo. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
dc.description.fil
Fil: Carreras, Alejo Cristian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina
dc.description.fil
Fil: Fonseca, Fabio C.. Comissao Nacional de Energia Nuclear. Centro de Lasers e Aplicacoes. Instituto de Pesquisas Energeticas e Nucleares.; Brasil
dc.journal.title
Solid State Ionics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.ssi.2017.01.019
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0167273815301569
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