Low Temperature Conductivity Study of MultiOrganic Solvent Electrolyte for Lithium-Sulfur Rechargeable Battery Application: Recent Study | Chapter 12 | Current Research and Development in Chemistry Vol.1
The conductivity of an electrolyte plays a significant role in deciding the performance of any battery over a wide temperature range from –40°C to 60°C. In this work, the conductivity of lithium bis (trifluoromethanesulfonyl) imide (LiTFSI) at a varied salt concentration range of 0.2 M to 2.0 M in a multi-solvent organic electrolyte system over a wide temperature range –40°C to 60°C are reported. The mixed solvents used were 1, 3-dioxolane (DOL), 1, 2-dimethoxyethane (DME), and tetraethylene glycol dimethyl ether (TEGDME) with an equal ratio of DOL: DME: TEGDME (1:1:1 by volume). The experimental analysis performed over the wide temperature range revealed the maximum conductivity at salt concentrations ranging from 1.0 M to 1.4 M for equal molar solvents. The optimum salt concentration and maximum conductivity in a different solvent composition ratio (i.e., 3:2:1) for all the temperatures is reported herein. The temperature-dependence conductivity of the salt concentration did not fit...