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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/4405

Title: Characterization of anionic-exchange membranes for direct alcohol alkaline fuel cells
Authors: Abuin, GC
Nonjola, P
Franceschini, E
Izraelevitch, F
Corti, H
Mathe, M
Keywords: Fuel cells
Alkaline fuel cells
Water uptake
Mechanical properties
Hydrogen
Sustainable energy sources
Issue Date: Jun-2009
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
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).
Description: III National and II Iberoamerican Congress "Hydrogen and Sustainable Energy Sources - HYFUSEN, San Juan, Argentina, 8-12 June 2009
URI: http://hdl.handle.net/10204/4405
Appears in Collections:Sustainable energy futures
Manufacturing science and technology
General science, engineering & technology

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