کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7746504 | 1498286 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Composite electrolytes of lithium salt/polymeric ionic liquid with bis(fluorosulfonyl)imide
ترجمه فارسی عنوان
الکترولیت های کامپوزیتی از نمک لیتیوم / مایع یونی پلیمری با بیس (فلوروسولفونیل) امید
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
A new polymeric ionic liquid (PIL), poly(1-vinyl-3-methylimidazolium) bis(fluorosulfonyl)imide (PVyMIM-FSI), has been prepared by polymerization of the monomer of ionic liquids, 1-vinyl-3-methylimidazolium bis(fluorosulfonyl)imide (VyMIM-FSI). Its structure and composition have been characterized by 1H and 19F NMR, and viscosity-average molecular weight (Mv). For comparison, the corresponding PIL, poly(1-vinyl-3-methylimidazolium) bis(trifluoromethanesulfonyl)imide (PVyMIM-TFSI), is also prepared and characterized. The physicochemical properties of the binary composite electrolytes of lithium bis(fluorosulfonyl)imide (LiFSI)/PVyMIM-FSI with various concentrations of LiFSI have been comparatively studied with those of the corresponding lithium bis(trifluoromethylsulfonyl)imide (LiTFSI)/PVyMIM-TFSI system, in terms of DSC, TGA, ionic conductivity, and lithium ion transference number (tLi+). Both the FSIâ- and TFSIâ-based PILs are thermally stable up to 250 °C. While both types of the prepared PILs show a significant decrease in glass transition temperature (Tg) upon addition of lithium salt, the values of Tg for the composite electrolytes of LiFSI/PVyMIM-FSI are all significantly lower by 20-60 °C in magnitude than those of the corresponding LiTFSI/PVyMIM-TFSI composite ones, indicating much better plasticizing effect for FSIâ vs. TFSIâ. The ionic conductivities of LiFSI/PVyMIM-FSI are all higher by about 2 orders in magnitude than those of the corresponding LiTFSI/PVyMIM-TFSI with the same concentration of lithium ions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 256, 1 March 2014, Pages 61-67
Journal: Solid State Ionics - Volume 256, 1 March 2014, Pages 61-67
نویسندگان
Heng Zhang, Wenfang Feng, Zhibin Zhou, Jin Nie,