Publication:
Characterization and Modeling of Free Volume and Ionic Conduction in Multiblock Copolymer Proton Exchange Membranes

dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Síntesis y Procesado de Materialeses
dc.contributor.authorGomaa, Mahmoud Mohammed
dc.contributor.authorSánchez Ramos, Arturo
dc.contributor.authorUreña Torres, María de las Nieves
dc.contributor.authorPérez Prior, María Teresa
dc.contributor.authorLevenfeld Laredo, Belén
dc.contributor.authorGarcía-Salaberri, Pablo A.
dc.contributor.authorElsharkawy, Mohamed Rabeh Mohamed
dc.contributor.funderComunidad de Madrides
dc.contributor.funderMinisterio de Ciencia, Innovación y Universidades (España)es
dc.contributor.funderUniversidad Carlos III de Madrides
dc.date.accessioned2022-06-09T09:43:33Z
dc.date.available2022-06-09T09:43:33Z
dc.date.issued2022-05-01
dc.description.abstractFree volume plays a key role on transport in proton exchange membranes (PEMs), including ionic conduction, species permeation, and diffusion. Positron annihilation lifetime spectroscopy and electrochemical impedance spectroscopy are used to characterize the pore size distribution and ionic conductivity of synthesized PEMs from polysulfone/polyphenylsulfone multiblock copolymers with different degrees of sulfonation (SPES). The experimental data are combined with a bundle-of-tubes model at the cluster-network scale to examine water uptake and proton conduction. The results show that the free pore size changes little with temperature in agreement with the good thermo-mechanical properties of SPES. However, the free volume is significantly lower than that of Nafion®, leading to lower ionic conductivity. This is explained by the reduction of the bulk space available for proton transfer where the activation free energy is lower, as well as an increase in the tortuosity of the ionic network.en
dc.description.sponsorshipThis research was funded by the Spanish Agencia Estatal de Investigación (PID2019- 106740RB-I00) and the Community of Madrid (PEM4ENERGY-CM-UC3M) by the call “Programa de apoyo a la realización de proyectos interdisciplinares de I + D para jóvenes investigadores de la Universidad Carlos III de Madrid 2019–2020” under the frame of the “Convenio Plurianual Comunidad de Madrid-Universidad Carlos III de Madrid”.en
dc.format.extent20
dc.identifier.bibliographicCitationGomaa, M. M., Sánchez-Ramos, A., Ureña, N., Pérez-Prior, M. T., Levenfeld, B., García-Salaberri, P. A., & Elsharkawy, M. R. M. (2022). Characterization and Modeling of Free Volume and Ionic Conduction in Multiblock Copolymer Proton Exchange Membranes. In Polymers, 14(9), 1688-1708en
dc.identifier.doihttps://doi.org/10.3390/polym14091688
dc.identifier.issn2073-4360
dc.identifier.publicationfirstpage1688
dc.identifier.publicationissue9
dc.identifier.publicationlastpage1708
dc.identifier.publicationtitlePolymersen
dc.identifier.publicationvolume14
dc.identifier.urihttps://hdl.handle.net/10016/35051
dc.identifier.uxxiAR/0000030802
dc.language.isoengen
dc.publisherMDPI AGen
dc.relation.projectIDComunidad de Madrid. PEM4ENERGY-CM-UC3Mes
dc.relation.projectIDGobierno de España. PID2019-106740RB-I00es
dc.rights© 2022 by the authors. Licensee MDPI, Basel, Switzerland.en
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaQuímicaes
dc.subject.otherPalsen
dc.subject.otherElectrochemical impedance spectroscopyen
dc.subject.otherModelingen
dc.subject.otherIonic conductivityen
dc.subject.otherFree volumeen
dc.subject.otherSpesen
dc.subject.otherProton exchange membraneen
dc.titleCharacterization and Modeling of Free Volume and Ionic Conduction in Multiblock Copolymer Proton Exchange Membranesen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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