Reyes, J.; Solorza-Feria, O.; García Bernabé, A.; Giménez Torres, E.; Sahuquillo, O.; Compañ Moreno, V. (2016). Conductivity of composite membrane-based poly(ether-ether-ketone) sulfonated (SPEEK) nanofiber mats of varying thickness. RSC Advances. 6(62):56986-56999. https://doi.org/10.1039/c6ra08228a
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/79453
Title:
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Conductivity of composite membrane-based poly(ether-ether-ketone) sulfonated (SPEEK) nanofiber mats of varying thickness
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Author:
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Reyes, J.L
Solorza-Feria, Omar
García Bernabé, Abel
Giménez Torres, Enrique
Sahuquillo, Oscar
Compañ Moreno, Vicente
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UPV Unit:
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Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros Industriales - Escola Tècnica Superior d'Enginyers Industrials
Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny
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Issued date:
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Abstract:
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Nanofiber mats of SPEEK70wt%-PVB30 wt% (polyvinyl butyral)-based composite membranes were prepared by varying the electrospinning time in order to obtain mats with different thicknesses. These mats were embedded in ...[+]
Nanofiber mats of SPEEK70wt%-PVB30 wt% (polyvinyl butyral)-based composite membranes were prepared by varying the electrospinning time in order to obtain mats with different thicknesses. These mats were embedded in SPEEK65wt%-PVA(35wt%) (polyvinyl alcohol) polymer solution to fill the pores in the fibers. The obtained membranes with different mat thicknesses have been characterized by water uptake, ionic exchange capacity, scanning electron microscopy, mechanical properties and proton conductivity. Microtensile test studies reveal that the maximum tensile strength increases as the thickness of the SPEEK-PVB nanofiber mats increases, resulting in more flexible composite membranes compared to a pure SPEEK-PVA membrane obtained by casting. The proton conductivity occurs more easily through the nanofiber than through the matrix phase, and the best conductivity (0.038 S cm(-1)) was measured at 120 degrees C for the composite membrane of SPEEK-PVB nanofiber mats obtained after 12 hours of electrospinning time. This value suggests that our composite membranes have high potential to function in the temperature range between 100 and 140 degrees C without losing their strength and while maintaining their high proton conductivity, making them an excellent candidate for fuel cells that operate at intermediate temperatures.
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Subjects:
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METHANOL FUEL-CELLS
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POLYMER ELECTROLYTE MEMBRANES
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HIGH-TEMPERATURE
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INTERMEDIATE TEMPERATURES
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COMPLEX PERMITTIVITY
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EXCHANGE MEMBRANES
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IONIC-CONDUCTIVITY
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KETONE) MEMBRANES
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ACID
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SPECTROSCOPY
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Copyrigths:
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Reconocimiento - No comercial (by-nc)
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Source:
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RSC Advances. (issn:
2046-2069
)
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DOI:
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10.1039/c6ra08228a
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Publisher:
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Royal Society of Chemistry
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Publisher version:
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http://dx.doi.org/10.1039/c6ra08228a
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Project ID:
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info:eu-repo/grantAgreement/MICINN//ENE2011-24761/ES/DESARROLLO DE NUEVOS DISPOSITIVOS IONICOS PARA LA PRODUCCION EFICIENTE Y SOSTENIBLE DE ENERGIA Y PRODUCTOS QUIMICOS%2FCOMBUSTIBLES/
info:eu-repo/grantAgreement/CONACyT//2014-02-245920/
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Thanks:
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This research has been supported by the ENE/2011-24761 project, granted by the Ministerio de Economia y Competitividad (MINECO), Spain, and grants from CONACYT-SENER-SUSTENTABILIDAD ENERGETICA 2014-02-245920 through Centro ...[+]
This research has been supported by the ENE/2011-24761 project, granted by the Ministerio de Economia y Competitividad (MINECO), Spain, and grants from CONACYT-SENER-SUSTENTABILIDAD ENERGETICA 2014-02-245920 through Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional (CINVESTAV), Mexico. Jose Luis Reyes-Rodriguez thanks CONACYT Program for a fellowship at the Universidad Politecnica de Valencia (UPV).
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Type:
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Artículo
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