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Cholesterol based imidazolium ionic liquid crystal: Synthesis, characterization and its dual application as an electrolyte and electrode material

Abstract

New ionic liquid crystal (ILC) containing cholesterol and bearing a terminal imidazolium moiety was synthesised and its mesophase behaviour was investigated by polarising optical microscopy (POM), differential scanning calorimetry (DSC) and X-ray diffraction (XRD) studies. The ILC displayed an intercalated lamellar mesophase having a wide phase range. Cyclic voltametry studies of the synthesised ILC revealed electrochemical stability with a good electrochemical window. Further, electrochemical performance of the ILC was evaluated as an electrolyte (0.5% in ethanol) for supercapacitor application using three electrode system consisting of graphene oxide – manganese dioxide (100m) coated carbon fiber electrode, silver-silver chloride (Ag-AgCl) reference and platinum foil counter electrodes. Among three different ratios of graphene oxide – manganese dioxide (1:1, 1:0.5, 0.5:1) investigated, the electrode containing 0.5:1 wt% of graphene oxide – manganese dioxide over carbon fiber showed good capacitive behaviour with a specific capacitence of 157.5 Fg-1 at a constant current density of 0.5 Ag-1 along with a good cyclic stability. In addition ILC was also studied as an electrode material in combination with carbon paste for investigating electron transfer reaction.

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Publication details

The article was received on 01 Oct 2018, accepted on 28 Nov 2018 and first published on 29 Nov 2018


Article type: Paper
DOI: 10.1039/C8NJ04988B
Citation: New J. Chem., 2018, Accepted Manuscript
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    Cholesterol based imidazolium ionic liquid crystal: Synthesis, characterization and its dual application as an electrolyte and electrode material

    M. Rajkumar, S. Selvam, V. Ganesh and S. Umadevi, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ04988B

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