In this work, mesoporous silica with medium surface area was prepared. The synthesized mesoporous silica was characterized by BET, SEM and TEM demonstrating the formation of an organized pore structure of the silica. Nafion-Si02 composite membrane with 5% of the filler was characterized by fhermogravimetry and ac impedance spectroscopy. The composite membranes exhibited higher proton conductivity than the reference Nafion membrane, due to the increasing of the water retention of the system. Direct ethanol fuel cell polarization curves of the composite were also conducted at 80°C and 130 °C, confirming the enhancement in ethanol fuel cells performance, due to a reduced ethanol cross over, as well as to enhanced proton conductivity of the composite membrane. ©The Electrochemical Society.

Ahmed, Z., De Matos, B., De Florio, D., Licoccia, S., Traversa, E., Esposito, V., et al. (2009). Nafion-mesoporous silica as electrolyte for ethanol fuel cells. In ECS Transactions (pp.853-860). Vienna [10.1149/1.3210639].

Nafion-mesoporous silica as electrolyte for ethanol fuel cells

LICOCCIA, SILVIA;TRAVERSA, ENRICO;
2009-01-01

Abstract

In this work, mesoporous silica with medium surface area was prepared. The synthesized mesoporous silica was characterized by BET, SEM and TEM demonstrating the formation of an organized pore structure of the silica. Nafion-Si02 composite membrane with 5% of the filler was characterized by fhermogravimetry and ac impedance spectroscopy. The composite membranes exhibited higher proton conductivity than the reference Nafion membrane, due to the increasing of the water retention of the system. Direct ethanol fuel cell polarization curves of the composite were also conducted at 80°C and 130 °C, confirming the enhancement in ethanol fuel cells performance, due to a reduced ethanol cross over, as well as to enhanced proton conductivity of the composite membrane. ©The Electrochemical Society.
216th ECS meeting
Vienna
2009
208
Electrochemical Society
Rilevanza internazionale
contributo
2009
Settore CHIM/07 - FONDAMENTI CHIMICI DELLE TECNOLOGIE
Settore ING-IND/22 - SCIENZA E TECNOLOGIA DEI MATERIALI
English
Ac impedance spectroscopy; Cross over; Mesoporous Silica; Nafion membrane; SEM and TEM; Surface area; Water retention, Ethanol; Ethanol fuels; Proton conductivity; Proton exchange membrane fuel cells (PEMFC); Silica, Composite membranes
Intervento a convegno
Ahmed, Z., De Matos, B., De Florio, D., Licoccia, S., Traversa, E., Esposito, V., et al. (2009). Nafion-mesoporous silica as electrolyte for ethanol fuel cells. In ECS Transactions (pp.853-860). Vienna [10.1149/1.3210639].
Ahmed, Z; De Matos, B; De Florio, D; Licoccia, S; Traversa, E; Esposito, V; Santiago, E; Fonseca, F
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/2108/13153
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact