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dc.contributor.author Abuin, GC
dc.contributor.author Nonjola, P
dc.contributor.author Franceschini, E
dc.contributor.author Izraelevitch, F
dc.contributor.author Corti, H
dc.contributor.author Mathe, M
dc.date.accessioned 2010-09-29T10:29:21Z
dc.date.available 2010-09-29T10:29:21Z
dc.date.issued 2009-06
dc.identifier.citation Abuin, GC, Nonjola, P, Franceschini, E et al. 2010. Characterization of anionic-exchange membranes for direct alcohol alkaline fuel cells. III National and II Iberoamerican Congress "Hydrogen and Sustainable Energy Sources - HYFUSEN, San Juan, Argentina, 8-12 June 2009, pp 1 en
dc.identifier.uri http://hdl.handle.net/10204/4405
dc.description III National and II Iberoamerican Congress "Hydrogen and Sustainable Energy Sources - HYFUSEN, San Juan, Argentina, 8-12 June 2009 en
dc.description.abstract Recently, alkaline direct alcohol fuel cells have received increased attention for the following reasons: anion charge carrier (OH) movement from cathode to anode, opposite to the movement of protons in proton exchange membranes (PEM), may lower alcohol crossover and less expensive non platinum catalysts can be utilized. Quaternized polymers such as poly (arylene ether sulfones) are being developed and studied as possible membrane materials for application in alkaline fuel cells.In this work, quaternary ammonium polymers were synthesized in two step sequence, firstly, by chloromethylation of commercial poly-sulfone followed by amination process as reported previously. Different membrane properties such us water uptake, electrical conductivity and Young modulus were evaluated and compared to other membrane materials commonly employed in PEM fuel cells. A quartz crystal microbalance (QMC) was used to measure the water uptake of thin membranes of this material casted over the quartz crystals, and exposed to vapour at different water activities. Conductivity measurements as a function of the water activity were obtained by AC impedance method, while the mechanical properties of the membranes under different conditions (doped and un-doped) were evaluated by nano-indentation using an atomic force microscope (AFM). en
dc.language.iso en en
dc.subject Fuel cells en
dc.subject Alkaline fuel cells en
dc.subject Water uptake en
dc.subject Mechanical properties en
dc.subject Hydrogen en
dc.subject Sustainable energy sources en
dc.title Characterization of anionic-exchange membranes for direct alcohol alkaline fuel cells en
dc.type Poster en


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