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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 the Arrhenius plot but it resembled the Vogel-Tamman-Fulcher plot behaviour. The present conductivity study was carried out to evaluate the overall operable temperature limit of the electrolyte used in the lithium-sulfur battery.

Author(s) Details

Ravindar Dharavath
Power Supply Systems Lab, Research Centre Imarat, Hyderabad 500069, Telangana, India.

View Book: - http://bp.bookpi.org/index.php/bpi/catalog/book/162

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