Abstract
Polymeric nanocomposite membranes were prepared through incorporating ZSM-5 type zeolite (SiO2/Al2O3=25) as molecular sieves into Nafion matrix for the direct methanol fuel cells (DMFC) applications. The transport properties of prepared membranes were characterized by measuring the methanol diffusion coefficient and proton conductivity. Nanocomposite membrane with 3.0 wt% ZSM-5 loading showed membrane selectivity of approximately 100,000 in comparison with 40,500 of Nafion117, and also a higher power density (172 mW.cm−2) than Nafion® 117 (108 mW.cm−2) for single cell DMFC in a 5 molar methanol feed.
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