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首页> 外文期刊>International Journal of Electrochemical Science >Dependence of Transport Properties of Concentrated Lithium Salt Solutions on Temperature and Composition in an Imidazolium-Based Liquid Zwitterion Containing an Oligo(Ethylene Oxide) Unit
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Dependence of Transport Properties of Concentrated Lithium Salt Solutions on Temperature and Composition in an Imidazolium-Based Liquid Zwitterion Containing an Oligo(Ethylene Oxide) Unit

机译：含低聚（环氧乙烷）单元的咪唑基液态两性离子中浓锂盐溶液的输运性质对温度和组成的依赖性

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摘要

In order to investigate the effects of lithium salt species and concentration on the electrochemicalproperties of a liquid zwitterion (LZw), composites of a LZw with lithium bis(fluorosulfonyl)amide(LiFSA) or lithium bis(trifluoromethylsulfonyl)amide (LiN(Tf)2) were prepared at various lithium saltconcentrations. The majority of LZw/LiFSA and LZw/LiN(Tf)2 composites with lithium salt molefractions in the range of 0.2 to 0.8 were obtained as colorless liquids and exhibited glass transitionsonly during DSC measurements. The dissociation state of the lithium salts in the composites wasdiscussed by means of FT-IR measurements. The interactions between the imidazolium cation and theamide anions were demonstrated. The LZw/LiFSA composite with a LiFSA mole fraction of 0.8-1 -5 (corresponding to a concentration of 13.7 mol kg ) exhibited the highest ionic conductivity (1.2 10-1 S cm ) as well as the greatest lithium transference number (0.46) at 40C.
机译：为了研究锂盐的种类和浓度对液态两性离子（LZw）的电化学性能的影响，LZw与双（氟磺酰基）酰胺锂（LiFSA）或双（三氟甲基磺酰基）酰胺锂（LiN（Tf）2）的复合物）是在各种锂盐浓度下制备的。锂盐摩尔分数在0.2到0.8范围内的大多数LZw / LiFSA和LZw / LiN（Tf）2复合材料都是无色液体，仅在DSC测量期间显示出玻璃化转变。通过FT-IR测量讨论了复合物中锂盐的解离状态。证明了咪唑阳离子与酰胺阴离子之间的相互作用。 LiFSA摩尔分数为0.8-1 -5（相当于13.7 mol kg）的LZw / LiFSA复合材料表现出最高的离子电导率（1.2 10-1 S cm）和最大的锂转移数（0.46）在40°C下

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