Aluminum Ion Species Transport in Pure and Additive Modulated Deep Eutectic Solvents (DES) Electrolytes
Aluminum Ion Species Transport in Pure and Additive Modulated Deep Eutectic Solvents (DES) Electrolytes
复制标题
纯和添加剂调制的低共熔溶剂 (DES) 电解质中铝离子物质的传输
DOI：
10.1149/09810.0401ecst
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Suarez, Sophia
中科院分区：
文献类型：
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作者：
Paterno, Domenec;Suarez, Sophia
使用 EIS 电导率测量研究了不同摩尔比的 AlCl3 低共熔溶剂 (DES) 中添加剂对铝物质传输的影响。研究的酰胺为乙酰胺、丙酰胺和丁酰胺，每种 AlCl3: 酰胺 DES 的摩尔比范围为 1:1-1.7:1。研究的添加剂是 5wt% 的碳酸丙烯酯 (PC) 和氟代碳酸乙烯酯 (FEC)。虽然 FEC 通常会降低电导率，但 PC 似乎会使反应平衡向较低的 AlCl3 浓度方向移动。 FEC 上的氟原子可能与 [AlCl2（酰胺）n]+ 物质相互作用，产生更强的相互作用，从而降低电导率。数据显示非阿伦尼乌斯行为，并使用 Vogel-Fulcher-Tammann 方程进行拟合，以揭示类似于一些纯离子液体的动态行为，其中阴离子的反式和顺式构象之间的有效相互转换促进了更快的离子动力学。这些结果有助于改进 DES 和类似的铝溶剂以用于电解质应用。
The effect of additives on the aluminum species transports in varying molar ratios of AlCl3 deep eutectic solvents (DES) was studied using EIS conductivity measurements. The amides studied were acetamide, propionamide and butyramide and the molar ratios ranged from 1: 1-1.7: 1 for each AlCl3: amide DES. The additives studied were propylene carbonate (PC) and fluoroethylene carbonate (FEC) in 5wt%. While FEC generally lowered the conductivities, PC appears to shift the reaction equilibrium towards lower AlCl3 concentration. It is possible the fluorine atom on the FEC interacts with the [AlCl2 (amide) n]+ species, creating stronger interactions that lowers the conductivity. The data displayed non-Arrhenius behavior and were fitted using the Vogel-Fulcher-Tammann equation to reveal dynamic behaviors similar to some pure ILs where the effective interconversion between the trans and cis conformations of the anion facilitated faster ion dynamics. These results can be helpful in modifying DES and similar aluminum solvents for electrolyte applications.