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Polyvinyl alcohol nanofiber reinforced Nafion membranes for fuel cell applications

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Polyvinyl alcohol nanofiber reinforced Nafion membranes for fuel cell applications

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dc.contributor.author Mollá Romano, Sergio es_ES
dc.contributor.author Compañ Moreno, Vicente es_ES
dc.date.accessioned 2016-05-17T10:03:45Z
dc.date.available 2016-05-17T10:03:45Z
dc.date.issued 2011-04-15
dc.identifier.issn 0376-7388
dc.identifier.uri http://hdl.handle.net/10251/64222
dc.description.abstract This work has been focused on the preparation and characterization of composite membranes with thickness between 19 and 97 mu m and containing Nafion(R) infiltrated into a porous mat obtained by electrospinning of an aqueous solution of Poly vinyl alcohol (PVA). The mat was composed of PVA nanofibers with diameters between 200 and 300 nm, which were functionalized on their external surface with sulfonic acid groups in order to cooperate in the proton conductivity of Nafione(R). The proton conductivity of a composite membrane (47 mu m thick) measured by impedance spectroscopy reached 0.022 S/cm at 70 degrees C and fully hydrated. This value is lower than the conductivity measured in the same conditions for a pristine Nafion(R) cast membrane (46 mu m), 0.032 S/cm. However, the performance of both membranes in Direct Methanol Fuel Cell tests was evaluated and showed comparable results. The proton conductivity of a series of cast Nafion(R) membranes with thickness similar to those of the composite membranes was found to behave linearly thickness-dependent, while NAF/PVA composite membranes do not show such a linear behavior due to their heterogeneous composition. Nevertheless, the composite membrane presenting a thickness of 47 mu m records the maximum peak conductivities at the whole temperature range. An intrinsic value for the activation energy of our cast Nafion(R) membranes at fully hydrated conditions was estimated to be 7 kJ/mol. es_ES
dc.description.sponsorship This work has been supported by the Valencian Institute of Small and Medium-Sized Enterprises (IMPIVA) and the European Regional Development Funds, through the project IMIDIC/2009/155. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation Valencian Institute of Small and Medium-Sized Enterprises (IMPIVA) es_ES
dc.relation European Regional Development Funds IMIDIC/2009/155 es_ES
dc.relation.ispartof Journal of Membrane Science es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Conductivity es_ES
dc.subject DMFC performance es_ES
dc.subject Nanocomposite Nafion® membranes es_ES
dc.subject PEMFC es_ES
dc.subject PVA nanofibers es_ES
dc.subject Aqueous solutions es_ES
dc.subject Cast membrane es_ES
dc.subject Direct methanol es_ES
dc.subject External surfaces es_ES
dc.subject Fuel cell application es_ES
dc.subject Functionalized es_ES
dc.subject Heterogeneous composition es_ES
dc.subject Impedance spectroscopy es_ES
dc.subject Linear behavior es_ES
dc.subject Nafion membrane es_ES
dc.subject Sulfonic acid groups es_ES
dc.subject Temperature range es_ES
dc.subject Activation energy es_ES
dc.subject Chemical analysis es_ES
dc.subject Direct methanol fuel cells (DMFC) es_ES
dc.subject Hydration es_ES
dc.subject Methanol es_ES
dc.subject Methanol fuels es_ES
dc.subject Nanocomposites es_ES
dc.subject Nanofibers es_ES
dc.subject Proton conductivity es_ES
dc.subject Proton exchange membrane fuel cells (PEMFC) es_ES
dc.subject Composite membranes es_ES
dc.subject Nanocomposite es_ES
dc.subject Nanofiber es_ES
dc.subject Polyvinyl alcohol es_ES
dc.subject Sulfonic acid derivative es_ES
dc.subject Water es_ES
dc.subject Article es_ES
dc.subject Differential scanning calorimetry es_ES
dc.subject Ion exchange es_ES
dc.subject Membrane es_ES
dc.subject Membrane conductance es_ES
dc.subject Membrane transport es_ES
dc.subject Nanotechnology es_ES
dc.subject Priority journal es_ES
dc.subject Proton transport es_ES
dc.subject Scanning electron microscopy es_ES
dc.subject Thermogravimetry es_ES
dc.subject Water transport es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title Polyvinyl alcohol nanofiber reinforced Nafion membranes for fuel cell applications es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.memsci.2011.02.001
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Termodinámica Aplicada - Departament de Termodinàmica Aplicada es_ES
dc.description.bibliographicCitation Mollá Romano, S.; Compañ Moreno, V. (2011). Polyvinyl alcohol nanofiber reinforced Nafion membranes for fuel cell applications. Journal of Membrane Science. 372(1-2):191-200. doi:10.1016/j.memsci.2011.02.001 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.memsci.2011.02.001 es_ES
dc.description.upvformatpinicio 191 es_ES
dc.description.upvformatpfin 200 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 372 es_ES
dc.description.issue 1-2 es_ES
dc.relation.senia 193897 es_ES


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