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Electrochemical and Physicochemical Characterizations of Butylsulfate-Based Ionic Liquids

机译:丁基硫酸盐基离子液体的电化学和物理化学表征

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A series of butylsulfate-based ionic liquids (ILs) are prepared using butylsulfate anions with variouscations, the influences of ring structural variations of cations on their thermal property, electrochemicalwindow, density, viscosity, and ionic conductivity are investigated. Good electrochemical stability (ca.4.7 V) of the butylsulfate-based ILs is confirmed by voltammetric measurements, and theincorporation of methyl group to replace acidic C-2 hydrogen atom of imidazolium cation or replaceimidazolium unit by pyrrolidinium or tri(n-propyl)ammonium slightly increases the cathodic stability.The deviations between ILs and ideal KCl line in adjust Walden plot decreases significantly than thosein general Walden plot owing to the adjusted Walden plot takes the difference of ion size into account.
机译:使用具有各种阳离子的丁基硫酸盐阴离子制备了一系列基于丁基硫酸盐的离子液体(ILs),研究了阳离子环结构变化对其热性质,电化学窗口,密度,粘度和离子电导率的影响。伏安法测量证实了基于硫酸丁酯的离子液体具有良好的电化学稳定性(约4.7 V),并且通过吡咯烷鎓或三(正丙基)铵的甲基取代甲基取代了咪唑鎓阳离子或取代咪唑鎓单元的酸性C-2氢原子调整后的Walden图中的ILs与理想KCl线之间的偏差比一般Walden图中的ILs和理想KCl线之间的偏差明显减小,这是因为调整后的Walden图考虑了离子尺寸的差异。

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