کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
637654 | 883690 | 2008 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Development of polyoxadiazole nanocomposites for high temperature polymer electrolyte membrane fuel cells
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Development of polyoxadiazole nanocomposites for high temperature polymer electrolyte membrane fuel cells Development of polyoxadiazole nanocomposites for high temperature polymer electrolyte membrane fuel cells](/preview/png/637654.png)
چکیده انگلیسی
Novel nanocomposite membranes were prepared with sulfonated polyoxadiazole and different amounts of sulfonated dense and mesoporous (MCM-41) silica particles. It has been shown that particle size and functionality of sulfonated silica particles play an important role when they are used as fillers for the development of polymer electrolyte nanocomposite membrane for fuel cells. No significant particle agglomerates were observed in all nanocomposite membranes prepared with sulfonated dense silica particles, as analyzed by SEM, AFM, TGA, DMTA and tensile tests. The Tg values of the composite membranes increased with addition of sulfonated silica, indicating an interaction between the sulfonic acid groups of the silica and the polyoxadiazole. Constrained polymer chains in the vicinity of the inorganic particles were confirmed by the reduction of the relative peak height of tan δ. A proton conductivity of 0.034 S cmâ1 at 120 °C and 25% RH, which is around two-fold higher than the value of the pristine polymer membrane was obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 322, Issue 2, 15 September 2008, Pages 406-415
Journal: Journal of Membrane Science - Volume 322, Issue 2, 15 September 2008, Pages 406-415
نویسندگان
Dominique Gomes, Roland Marschall, Suzana P. Nunes, Michael Wark,