کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5210383 | 1382891 | 2011 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Methacrylic-based solid polymer electrolyte membranes for lithium-based batteries by a rapid UV-curing process
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
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چکیده انگلیسی
The present communication describes solid polymer electrolyte (SPE) membranes prepared by the direct free radical photo-polymerisation (UV-curing) of poly(ethyleglycol)methacrylic oligomers in the presence of a lithium salt. The highly mobile pendant ethoxy chains, constituting a considerable fraction of the whole polymer matrix, can provide a large density of coordination sites for the Li+ ions and make the material an interesting solvent-free ion conducting medium for high temperature application. The production process is simple and versatile; the resulting membranes demonstrate mechanical integrity due to the cross-linked nature of the polymer network, and wide thermal stability. The electrolytes produced are extra soft, non-crystalline, transparent solids, do not contain volatile matter and show sufficient ionic conductivity along with a wide electrochemical stability window. Differential scanning calorimetry (DSC), Fourier-transform infrared spectroscopy (FT-IR), and electrochemical impedance spectroscopy (EIS) are employed to characterise the polymers, monitor its phase changes and control the conductivity of the electrolytes as a function of lithium bis(trifluoromethane)sulfonimide salt (LiTFSI) concentration. The temperature dependence of the ionic conductivity follows the Vogel-Tamman-Fulcher (VTF) equation, and the ionic conductivity at 60 °C reaches values higher than 10â4 S cmâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 71, Issue 4, April 2011, Pages 409-416
Journal: Reactive and Functional Polymers - Volume 71, Issue 4, April 2011, Pages 409-416
نویسندگان
Jijeesh R. Nair, C. Gerbaldi, M. Destro, R. Bongiovanni, N. Penazzi,