Zeolite-based composite membranes for high temperature direct methanol fuel cells

Baglio, V.; Arico, A.S.; Blasi, A.; Antonucci, P.; Nannetti, F.; Tricoli, V.; Antonucci, V.
February 2005
Journal of Applied Electrochemistry;Feb2005, Vol. 35 Issue 2, p207
Academic Journal
Composite Nafion membranes containing three natural zeolites (Mordenite, Chabazite and Clinoptilolite) were prepared by using a recast procedure for application in high temperature Direct Methanol Fuel Cells (DMFCs). The Nafion-zeolite membranes have shown good properties for high temperature DMFC application, due to their improved water retention characteristics. A maximum power density of 390 mW cm-2 was achieved at 140 °C with the mordenite-based composite membranes in the presence of oxygen feed. The electrochemical behaviour of the composite membranes was interpreted in the light of surface properties and acidic characteristics of the fillers.


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