کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
637480 1456153 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nanocomposite fuel cell membranes based on Nafion and acid functionalized zeolite beta nanocrystals
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Nanocomposite fuel cell membranes based on Nafion and acid functionalized zeolite beta nanocrystals
چکیده انگلیسی
We have prepared nanocomposite proton exchange membranes (PEMs) based on Nafion with sulfonic acid functionalized zeolite beta (AFB) as an additive. 2.5 and 5 wt% AFB composite membranes possess proton conductivity/methanol permeability (selectivity) ratios as much as 93% higher than commercial Nafion 117 at 21 °C, and 63% higher at 80 °C. These 2.5 and 5 wt% AFB composite membranes also outperform commercial Nafion 117 in direct methanol fuel cell performance evaluations. The composite membranes are characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, four-electrode impedance for proton conductivity, two-compartment permeation for methanol crossover, and direct methanol fuel cell performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 320, Issues 1–2, 15 July 2008, Pages 86-92
نویسندگان
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