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Poly(Acrylic acid)–Based Hybrid Inorganic–Organic Electrolytes Membrane for Electrical Double Layer Capacitors Application

机译:应用于双电层电容器的基于聚(丙烯酸)的混合无机-有机电解质膜

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Nanocomposite polymer electrolyte membranes (NCPEMs) based on poly(acrylic acid)(PAA) and titania (TiO 2 ) are prepared by a solution casting technique. The ionic conductivity of NCPEMs increases with the weight ratio of TiO 2 .The highest ionic conductivity of (8.36 ± 0.01) × 10 ?4 S·cm ?1 is obtained with addition of 6 wt % of TiO 2 at ambient temperature. The complexation between PAA, LiTFSI and TiO 2 is discussed in Attenuated total reflectance-Fourier Transform Infrared (ATR-FTIR) studies. Electrical double layer capacitors (EDLCs) are fabricated using the filler-free polymer electrolyte or the most conducting NCPEM and carbon-based electrodes. The electrochemical performances of fabricated EDLCs are studied through cyclic voltammetry (CV) and galvanostatic charge-discharge studies. EDLC comprising NCPEM shows the specific capacitance of 28.56 F·g ?1 (or equivalent to 29.54 mF·cm ?2 ) with excellent electrochemical stability.
机译:通过溶液流延技术制备了基于聚丙烯酸(PAA)和二氧化钛(TiO 2)的纳米复合高分子电解质膜(NCPEMs)。 NCPEMs的离子电导率随TiO 2的重量比而增加。在环境温度下添加6%的TiO 2可获得最高的离子电导率(8.36±0.01)×10?4 S·cm?1。衰减全反射-傅立叶变换红外(ATR-FTIR)研究中讨论了PAA,LiTFSI和TiO 2之间的络合物。使用无填料的聚合物电解质或导电性最强的NCPEM和碳基电极制造双电层电容器(EDLC)。通过循环伏安法(CV)和恒电流充放电研究,研究了制备的EDLC的电化学性能。包含NCPEM的EDLC的比电容为28.56 F·g?1(或等于29.54 mF·cm?2),具有出色的电化学稳定性。

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