کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
636751 | 1456134 | 2009 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modification of ultrathin polyetheretherketone film for application in direct methanol fuel cells
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
An ultrathin polyetheretherketone (PEEK) film was modified by thermal grafting of divinylbenzene (DVB) followed by radiation grafting of ethyl styrenesulfonate (ETSS), to develop a polymer electrolyte membrane (PEM) for use in direct methanol fuel cells (DMFCs). The DVB-grafting yield by thermal polymerization was less than 7%, but was sufficient to enhance the subsequent ETSS-grafting. The ETSS units were converted to styrenesulfonic acid (SS) units by hydrolysis in water at 95 °C, resulting in an ultrathin PEEK-g-DVB-g-SS PEM. FT-IR and TG analysis as well as measurements for the ion exchange capacity (IEC), water uptake, proton conductivity, mechanical strength, and methanol permeability were performed. Furthermore, this new PEM was tested in a DMFC, and a high maximum power density of 110 mW cmâ2 at 95 °C was confirmed. Therefore, we conclude that this modified PEEK film can be used as the PEM for the application in DMFCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 344, Issues 1â2, 15 November 2009, Pages 266-274
Journal: Journal of Membrane Science - Volume 344, Issues 1â2, 15 November 2009, Pages 266-274
نویسندگان
Jinhua Chen, Dengrong Li, Hiroshi Koshikawa, Maolin Zhai, Masaharu Asano, Hiroyuki Oku, Yasunari Maekawa,