کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7739787 1497992 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced proton conductivity under low humidity of sulfonated poly(ether ether ketone) composite membrane enabled by multifunctional phosphonic acid polymeric submicrocapsules
ترجمه فارسی عنوان
هدایت پروتون پیشرفته تحت رطوبت کم پلیمر (اتر اتر کتون) سولفونیک غشاء توسط متبلورهای پلیمری چند منظوره اسید فسفریک
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
Phosphonic acid polymeric submicrocapsules (PASCs) are synthesized and incorporated into a sulfonated poly(ether ether ketone) (SPEEK) matrix to prepare composite membranes. The microstructure and physicochemical properties of the PASCs and the membranes are characterized by transmission electron microscopy (TEM), energy dispersive X-ray (EDX), field emission scanning electron microscope (FESEM), thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR). Compared with the SPEEK control membrane, the PASC-filled composite membranes exhibit elevated water uptake and proton conductivity at 25 °C and 100% relative humidity (RH). The proton conductivity depends strongly on water content within the membranes. Under 40 °C and 20% RH, the composite membrane filled with 15 wt.% PASCs (128 nm lumen) shows the highest proton conductivity of 0.0142 S cm−1 after 90 min testing, about twelve times higher than that of the SPEEK control membrane (0.0011 S cm−1), which is positively correlated with the water retention of the membrane. These results suggest that the PASC-filled composite membranes may find encouraging application as efficient water-retention and proton-conduction materials in proton exchange membrane fuel cells (PEMFCs).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 240, 15 October 2013, Pages 258-266
نویسندگان
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