首页> 外文期刊>Journal of Applied Polymer Science >Solid terpolymer electrolyte based on poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) incorporated with lithium salt and tetraglyme for EDLCs
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Solid terpolymer electrolyte based on poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) incorporated with lithium salt and tetraglyme for EDLCs

机译:基于聚(乙烯基丁醛 - 乙烯基醇 - 乙烯基乙酸乙烯酯)的固体萜酯电解质掺入锂盐和EDLCS的四平均ME

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摘要

Solid terpolymer electrolytes (STEs) consist of different ratios of poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) (PVBVA) and bis(trifluoromethane) sulfonamide lithium salt (LiTFSi) were prepared and the ionic conductivity of the prepared STEs was evaluated. The optimized STE (denoted as STE 20) was further doped with various amount of tetraglyme (10, 20, and 30 wt % and denoted as G10, G20, and G30, respectively). G20 enhanced the ionic conductivity from 6.22 (for STE 20) to 21.9 mu S cm(-1). This enhancement is due to the presence of abundant oxygen-containing functional group in tetraglyme that provides more charge carrier mobility in the polymer matrix. The structure and complexation of the materials are authenticated via X-ray diffraction and Fourier transform infrared spectroscopy analysis. The performance of electric double layer capacitors based on activated carbon (AC) fabricated with STE 20 (AC/STE 20/AC) and G20 (AC/G 20/AC) were studied via cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy. AC/G 20/AC achieved the maximum specific capacitance of 10.20 F/g [which is higher than AC/STE 20/AC (9.30 F/g)] with 75% of specific capacitance retention after 1500 cycles. (C) 2017Wiley Periodicals, Inc.
机译:制备具有不同(乙烯基缩醛 - 乙烯基醇 - 乙烯醇)(PVBVA)和双(三氟甲烷)磺胺酰胺锂盐(LITFSI)的不同比例的固体三元共聚物电解质(术)组成,并制备术的离子电导率评估了。优化的STE(表示为STE 20),进一步掺杂有各种量的四平均(10,20和30wt%,分别表示为G10,G20和G30)。 G20从6.22(STE 20)增强离子导电率至21.9μscm(-1)。这种增强是由于在极性ME中存在丰富的含氧官能团,其在聚合物基质中提供更多的电荷载流子迁移率。材料的结构和络合通过X射线衍射和傅里叶变换红外光谱分析来认证。基于由STE 20(AC / STE 20 / AC)和G20(AC / G 20 / AC)制造的基于活性炭(AC)的电双层电容器的性能是通过循环伏安法,电压电荷放电和电化学阻抗研究光谱学。 AC / G 20 / AC实现了10.20 f / g的最大特定电容,其高于AC / STE 20 / AC(9.30 F / g)],在1500次循环后的75%的特定电容保留。 (c)2017Wiley期刊,Inc。

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