Nafion/Faujasite zeolite composite membranes have been prepared by solution casting at a zeolite content ranging from 0.98 to 21.4 wt %. The effect of the zeolite loading on the mobility of both liquid and vapor water through the Nafion membrane has been investigated by using two complementary techniques, that is, differential scanning calorimetry and dynamic vapor sorption. The relationship between water mobility, proton conductivity, and direct methanol fuel cell (DMFC) performance of composites is also discussed. The addition of zeolite contributes to the enhancement of the water mobility degree in the composite membrane due to both the surface composition of the additive and the introduction of porosity at the polymer/filler interface. Nafion/zeolite composites having higher proton conductivity and DMFC performance than bare Nafion can thus be fabricated by fine-tuning of the additive content and the membrane morphology.

Mecheri, B., Felice, V., Zhang, Z., D'Epifanio, A., Licoccia, S., Tavares, A. (2012). DSC/DVS investigation of water mobility in nafion/zeolite composite membranes for fuel cell applications. JOURNAL OF PHYSICAL CHEMISTRY. C, 116, 20820-20829 [10.1021/jp301762h |].

DSC/DVS investigation of water mobility in nafion/zeolite composite membranes for fuel cell applications

Mecheri, B;D'EPIFANIO, ALESSANDRA;LICOCCIA, SILVIA;
2012-01-01

Abstract

Nafion/Faujasite zeolite composite membranes have been prepared by solution casting at a zeolite content ranging from 0.98 to 21.4 wt %. The effect of the zeolite loading on the mobility of both liquid and vapor water through the Nafion membrane has been investigated by using two complementary techniques, that is, differential scanning calorimetry and dynamic vapor sorption. The relationship between water mobility, proton conductivity, and direct methanol fuel cell (DMFC) performance of composites is also discussed. The addition of zeolite contributes to the enhancement of the water mobility degree in the composite membrane due to both the surface composition of the additive and the introduction of porosity at the polymer/filler interface. Nafion/zeolite composites having higher proton conductivity and DMFC performance than bare Nafion can thus be fabricated by fine-tuning of the additive content and the membrane morphology.
2012
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore CHIM/07 - FONDAMENTI CHIMICI DELLE TECNOLOGIE
English
Con Impact Factor ISI
electrolyte; water mobility; DSC/DVS
Mecheri, B., Felice, V., Zhang, Z., D'Epifanio, A., Licoccia, S., Tavares, A. (2012). DSC/DVS investigation of water mobility in nafion/zeolite composite membranes for fuel cell applications. JOURNAL OF PHYSICAL CHEMISTRY. C, 116, 20820-20829 [10.1021/jp301762h |].
Mecheri, B; Felice, V; Zhang, Z; D'Epifanio, A; Licoccia, S; Tavares, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/77152
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