Research progress on the conductivity properties of ionic liquids

doi:10.11949/0438-1157.20211810

Abstract

Abstract:

Ionic liquids (ILs) have excellent electrical conductivity, and their conductivity properties are not only a key property for its electrochemical applications, but also widely used to investigate the thermodynamic properties and microstructure of the mixture containing ILs. Firstly, the recent experimental research progress on the conductivity (κ) or molar conductivity (Λ) of pure ILs, ILs+solvents and ILs+ILs systems are summarized, and the effects of the structure of ILs, temperature, and concentration on κ or Λ are discussed. Combined with the solution thermodynamic model, the changing laws of κ or Λ of ILs are analyzed. On this basis, the application and progress of electrical conductivity properties in studying the ionic rate of pure ILs and the microstructure and interaction of ILs+solvent systems are highlighted. Finally, some suggestions are made on the research and application of the conductivity properties of ILs.

Key words: ionic liquids, conductivity, molar conductivity, ionicity, thermodynamics, electrochemistry

摘要：

离子液体(ILs)具有优异的导电能力，其电导性质不仅是电化学应用的基础，而且广泛用于研究ILs溶液热力学性质与微观结构。本文首先总结了近年来实验测定法在研究纯ILs、ILs+溶剂和ILs+ILs体系电导率(κ)或摩尔电导率(Λ)等方面取得的进展，详细讨论了ILs结构、ILs浓度、温度等因素对体系κ或Λ的影响，并结合溶液热力学模型分析了ILs κ或Λ的变化规律。在此基础上，重点介绍了电导性质在研究纯ILs的离子率以及ILs+溶剂体系微观结构和相互作用方面的应用及进展。最后，对ILs电导性质研究与应用提出了几点建议。

关键词: 离子液体, 电导率, 摩尔电导率, 离子率, 热力学, 电化学

CLC Number:

TQ 013.1

Xue FU, Tingting CHEN, Tingting CHEN, Yingjie XU. Research progress on the conductivity properties of ionic liquids[J]. CIESC Journal, 2022, 73(5): 1883-1893.

付雪, 陈婷婷, 陈婷婷, 许映杰. 离子液体的电导性质研究进展[J]. 化工学报, 2022, 73(5): 1883-1893.

Figures/Tables 3

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