Composite membranes, prepared by mixing sulfonated polyether ether ketone (SPEEK) and WO3·2H2O in dimethylacetamide, were characterized by Thermogravimetry, Electrochemical Impedance Spectroscopy and Water Uptake measurements to evaluate their possible performance as proton exchange membranes (PEM). The body of results indicated the existence of a coordinative interaction between the water molecules of tungsten oxide and the sulfonic acid (-SO3H) groups of SPEEK. Moreover, EIS data demonstrated that the proton conductivity of the composite membranes is higher than both that of pure SPEEK and pure tungsten oxide, suggesting the presence of ion-rich regions where the proton transfer is favored. The SO3H - H2O interaction not only lead to enhancement of the proton conductivity of the membranes but also to improvement of their heat resistance as well as to decrease their water solubility.

Mecheri, B., D'Epifanio, A., DI VONA, M.l., Traversa, E., Licoccia, S., Miyayama, M. (2006). Proton conducting electrolyte membranes based on tungsten oxide and sulfonated polyether ether ketone hybrid composites. MATERIALS RESEARCH SOCIETY SYMPOSIA PROCEEDINGS, 885, 197-202 [10.1557/PROC-0885-A09-12].

Proton conducting electrolyte membranes based on tungsten oxide and sulfonated polyether ether ketone hybrid composites

MECHERI, BARBARA;D'EPIFANIO, ALESSANDRA;DI VONA, MARIA LUISA;TRAVERSA, ENRICO;LICOCCIA, SILVIA;
2006-01-01

Abstract

Composite membranes, prepared by mixing sulfonated polyether ether ketone (SPEEK) and WO3·2H2O in dimethylacetamide, were characterized by Thermogravimetry, Electrochemical Impedance Spectroscopy and Water Uptake measurements to evaluate their possible performance as proton exchange membranes (PEM). The body of results indicated the existence of a coordinative interaction between the water molecules of tungsten oxide and the sulfonic acid (-SO3H) groups of SPEEK. Moreover, EIS data demonstrated that the proton conductivity of the composite membranes is higher than both that of pure SPEEK and pure tungsten oxide, suggesting the presence of ion-rich regions where the proton transfer is favored. The SO3H - H2O interaction not only lead to enhancement of the proton conductivity of the membranes but also to improvement of their heat resistance as well as to decrease their water solubility.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore CHIM/07 - Fondamenti Chimici delle Tecnologie
English
Con Impact Factor ISI
polymer; ceramic; composite
Mecheri, B., D'Epifanio, A., DI VONA, M.l., Traversa, E., Licoccia, S., Miyayama, M. (2006). Proton conducting electrolyte membranes based on tungsten oxide and sulfonated polyether ether ketone hybrid composites. MATERIALS RESEARCH SOCIETY SYMPOSIA PROCEEDINGS, 885, 197-202 [10.1557/PROC-0885-A09-12].
Mecheri, B; D'Epifanio, A; DI VONA, Ml; Traversa, E; Licoccia, S; Miyayama, M
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/118966
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact