How is charge transport different in ionic liquids? The effect of high pressure

Physical Chemistry Chemical Physics : PCCP
Zaneta WojnarowskaM Paluch

Abstract

Modern ionic liquids (ILs) are considered green solvents for the future applications due to their inherited advantages and remarkable transport properties. One of the ubiquitous properties of ILs is their intrinsic ionic conductivity. However, understanding of the super-Arrhenius behavior of the ionic conductivity process at elevated pressure still remains elusive and crucial in glass science. In this work, we investigate the ion transport properties of 1-butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide: [C4mim][NTf2], 1-butylimidazolium bis[(trifluoromethyl)-sulfonyl]imide: [C4Him][NTf2] and 1-butylimidazolium hydrogen sulfate: [C4Him][HSO4] ILs in the supercooled liquid state using dielectric spectroscopy at ambient and high pressure. We present the experimental data in the dynamic window of the conductivity formalism to examine the charge transport properties. The frequency-dependent ionic conductivity data have been analyzed using the time-temperature superposition principle. In the Arrhenius diagram, the thermal evolution of the dc-conductivity reveals similar temperature dependence for both protic and aprotic ILs thus making it difficult to distinguish the ion dynamics. However, our results demonstrate the ke...Continue Reading

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Citations

Sep 26, 2019·Scientific Reports·Aleksandra Drozd-Rzoska
Jan 24, 2018·The Journal of Physical Chemistry. B·Luiz F O FariaMauro C C Ribeiro
Jun 23, 2020·ACS Applied Materials & Interfaces·Vera BocharovaZaneta Wojnarowska

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