کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9761733 | 1498426 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical and spectroscopic investigations of a gel polymer electrolyte of poly(methylmethacrylate) and zinc triflate
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A gel polymer electrolyte (GPE) film comprising poly(methyl methacrylate), ethylene carbonate (EC), propylene carbonate (PC) and zinc triflate (ZnTr) is prepared and characterized by electrochemical and spectroscopic techniques. The GPE is optimized to contain minimum quantity of the liquid components required for the gel formation with a maximum specific conductivity (Ï) of (1.3±0.45)Ã10â3 S cmâ1 at (27±1) °C. The variation of Ï with temperature follows an Arrhenius behavior and the activation energy for the optimum composition is determined to be 0.19 eV. Ac impedance and cyclic voltammetric studies indicate electrochemical activity of Zn/Zn2+ couple in the GPE. Cyclic voltammetry and charge-discharge cycling studies reveal intercalation/deintercalation of Zn2+ in γ-MnO2. FT-Raman spectroscopy has been used to follow the changes in the ionic environment in the GPE. The symmetric stretching mode of triflate anion (νsSO3) has been used as a probe to follow the presence of free ions, ion pairs and higher aggregates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 176, Issues 7â8, 28 February 2005, Pages 773-780
Journal: Solid State Ionics - Volume 176, Issues 7â8, 28 February 2005, Pages 773-780
نویسندگان
G. Girish Kumar, S. Sampath,