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Low Temperature Conductivity Study of Multi organic Solvent Electrolyte for Lithium-Sulfur Rechargeable Battery Application

Author(s): Maziar Bashuri

Over a wide temperature range of 40°C to 60°C, the conductivity of an electrolyte plays a crucial role in determining the performance of any battery. The conductivity of lithium bis(rifluoromethanesulfonyl)imide (LiTFSI) in a multisolvent organic electrolyte system at various salt concentrations ranging from 0.2 M to 2.0 M is reported in this study across a temperature range of 40°C to 60°C. In an experimental research done over a wide temperature range, the maximum conductivity was obtained at salt concentrations ranging from 1.0 M to 1.4 M for equal molar solvents. The optimum salt amount and maximum conductivity in a specific solvent composition ratio (i.e., 3 : 2 : 1) are reported for all temperatures. The conductivity of the salt concentration as a function of temperature did not suit the Arrhenius plot, but it resembled the Vogel–Tamman–Fulcher plot behaviour. The purpose of this conductivity investigation was to determine the electrolyte's overall operational temperature limit in a lithium-sulfur battery.

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