کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9761680 | 1498424 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Low methanol permeable and high proton-conducting Nafion/calcium phosphate composite membrane for DMFC
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
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چکیده انگلیسی
Calcium phosphate (CP)/Nafion composite membranes were fabricated by incorporating CP into Nafion structure for the direct methanol fuel cells (DMFCs). This composite membrane showed lower methanol crossover compared to cast Nafion and Nafion® 117. This is likely to be due to high crystallinity and low water uptake content in the composite membranes. In addition, the composite membranes containing CP2.5% and CP5% showed higher proton conductivity than cast Nafion from 50 to 100 °C. In relation to high proton conductivity, the absorption vibration at 2360 cmâ1 corresponding to sulfonic acid bridge represents high thermal stability in the composite membranes even at high temperature. Focused ion beam (FIB) micrograph displays well-developed three-dimensional channels in the surface and cross-section area within the composite membrane, allowing the various conducting paths and high conductivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 176, Issues 11â12, 31 March 2005, Pages 1079-1089
Journal: Solid State Ionics - Volume 176, Issues 11â12, 31 March 2005, Pages 1079-1089
نویسندگان
Young-Sun Park, Yohtaro Yamazaki,