Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 369, Issue 1-2, Pages 367-374Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2010.12.030
Keywords
Fuel cell; Composite membrane; Methanol crossover; Zeolite; Mordenite
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Composite polymer proton exchange membranes (PEM) were prepared by solution recasting. The composite membranes formed are based on Nafion incorporating a silane functionalized zeolite, mordenite, as an additive. The composite membranes were placed within a single cell DMFC and compared to an MEA featuring a standard Nation 125 mu m membrane. The impact of mordenite particle size, the choice of the silane functionalizing agent and the membrane preparation procedure are investigated. A composite ion exchange membrane which featured Nation and a ground mordenite which was functionalized using glycidoxypropyltrimethoxysilane achieved a power density that outperformed a standard Nation MEA under all conditions. (C) 2010 Elsevier B.V. All rights reserved.
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