Effect of lithium chloride on the density and dynamic viscosity of choline chloride/urea deep eutectic solvent in the temperature range (303.15–358.15) K. (January 2019)

• Record Type: Journal Article
• Authors: Dhingra, Divya; Bhawna, ; Pandey, Siddharth
• Is Part Of: Journal of chemical thermodynamics. Volume 130(2019)
• Page Start: 166
• Page End: 172
• Publication Date: 2019-01
• Subjects: Deep eutectic solvents -- LiCl -- Density -- Dynamic viscosity -- Temperature dependence of density -- Temperature dependence of dynamic viscosity; Thermodynamics -- Periodicals; Thermochemistry -- Periodicals; Thermodynamique -- Périodiques; Thermochimie -- Périodiques; Thermochemistry; Thermodynamics; Periodicals; 541.369
• DOI: 10.1016/j.jct.2018.10.003
• Languages: English
• ISSNs: 0021-9614

Abstract

Abstract: Deep eutectic solvents (DESs) have emerged as superior alternatives to ionic liquids. Lithium salt-added DES mixtures may possess favorable properties as novel electrolyte media for Li-ion batteries. Densities and dynamic viscosities of LiCl-added DES reline (constituted of salt choline chloride and H-bond donor urea in 1:2 mol ratio) mixtures up to ∼0.2 molal LiCl [ m (LiCl)] in the temperature range (303.15–358.15) K are presented. Decrease in density with increasing temperature is found to follow a simple linear expression. The density of LiCl-added reline also increases linearly with increasing m (LiCl) in the investigated temperature range. The temperature dependence of the dynamic viscosity of the (reline + LiCl) mixtures follows simple Arrhenius-type expression. The dynamic viscosity of LiCl-added reline mixture at a given temperature increases exponentially with increasing m (LiCl); the exponential increase being more prominent at lower temperatures. The trends in density and dynamic viscosity with temperature and m (LiCl) for LiCl-added DES reline are rather simplistic in comparison to Li salt-added ionic liquid mixtures.