Nafion-TiO2 composite DMFC membranes: physico-chemical properties of the filler versus electrochemical performance
Articolo
Data di Pubblicazione:
2005
Citazione:
Nafion-TiO2 composite DMFC membranes: physico-chemical properties of the filler versus electrochemical performance / Baglio, V., Arico', A.S., DI BLASI, A., Antonucci, V., Antonucci, P., Licoccia, S., Traversa, E., SERRAINO FIORY, F.. - In: ELECTROCHIMICA ACTA. - ISSN 0013-4686. - 50:(2005), pp. 1241-1246.
Abstract:
TiO2 nanometric powders were prepared via a sol–gel procedure and calcined at various temperatures to obtain different surface and bulk
properties. The calcined powders were used as fillers in composite Nafion membranes for application in high temperature direct methanol fuel
cells (DMFCs). The powder physico-chemical properties were investigated by X-ray diffraction (XRD), transmission electron microscopy
(TEM), X-ray photoelectron spectroscopy (XPS) and pH measurements. The observed characteristics were correlated to the DMFC electrochemical
behaviour. Analysis of the high temperature conductivity and DMFC performance reveals a significant influence of the surface
characteristics of the ceramic oxide, such as oxygen functional groups and surface area, on the membrane electrochemical behaviour. A
maximum DMFC power density of 350mWcm−2 was achieved under oxygen feed at 145 ◦C in a pressurized DMFC (2.5 bar, anode and
cathode) equipped with TiO2 nano-particles based composite membranes.
properties. The calcined powders were used as fillers in composite Nafion membranes for application in high temperature direct methanol fuel
cells (DMFCs). The powder physico-chemical properties were investigated by X-ray diffraction (XRD), transmission electron microscopy
(TEM), X-ray photoelectron spectroscopy (XPS) and pH measurements. The observed characteristics were correlated to the DMFC electrochemical
behaviour. Analysis of the high temperature conductivity and DMFC performance reveals a significant influence of the surface
characteristics of the ceramic oxide, such as oxygen functional groups and surface area, on the membrane electrochemical behaviour. A
maximum DMFC power density of 350mWcm−2 was achieved under oxygen feed at 145 ◦C in a pressurized DMFC (2.5 bar, anode and
cathode) equipped with TiO2 nano-particles based composite membranes.
Tipologia CRIS:
1.1 Articolo in rivista
Elenco autori:
Baglio, V.; Arico', A. S.; DI BLASI, A.; Antonucci, V.; Antonucci, Pierluigi; Licoccia, S.; Traversa, E.; SERRAINO FIORY, F.
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