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Thermal, Electrochemical and Radiolytic Stabilities of Ionic Liquids

Abstract

Researches on ionic liquids have achieved rapid progress in the last several decades. The stability is a prerequisite for the application of ionic liquids. Ionic liquids may be used at elevated temperature, as electrolytes, or under irradiation. Therefore, the thermal, electrochemical, and radiolytic stabilities of ionic liquids are important and need to be known before their usage. Many research papers and some reviews on the stabilities of ionic liquids have been published. However, new results are continuing published and comprehensive review and perspective on this topic is still urgently needed. In this perspective, we intend to provide a comprehensive review including characterization methods, the effects of chemical composition of the ionic liquids on the thermal, electrochemical, and radiolytic stabilities of ionic liquids, respectively. Moreover, the thermal stability of some special types of ionic liquids such as poly(ionic liquids) and mixed ionic liquids, and the thermal and electrochemical stability of protic ionic liquids are discussed too. For thermally stability, the interactions between ions are less important than the individual anions and cations. The decomposition temperature is mainly determined by the less-stable ion, usually the anion. For electrochemically stability, the electrochemical window is determined by both cation and anion. The less stable ion could influence the stability by interaction between the generated species from the decomposition with more stable ion (opposite ion). This perspective is helpful for people to avoid using unstable ionic liquids and choose suitable ionic liquids.

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Publication details

The article was received on 06 Nov 2017, accepted on 12 Feb 2018 and first published on 12 Feb 2018


Article type: Perspective
DOI: 10.1039/C7CP07483B
Citation: Phys. Chem. Chem. Phys., 2018, Accepted Manuscript
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    Thermal, Electrochemical and Radiolytic Stabilities of Ionic Liquids

    Z. Xue, L. Qin, J. Jiang, T. Mu and G. Gao, Phys. Chem. Chem. Phys., 2018, Accepted Manuscript , DOI: 10.1039/C7CP07483B

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