Used as a liquid electrolyte in lithium-sulfur batteries, formulated as battery-grade 1.0M lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) in a 1:1 volumetric mixture of 1,2-dimethoxyethane (DME) and 1,2-dioxolane (DOL). It enables efficient lithium-ion conduction and is compatible with lithium metal anodes and sulfur cathodes, supporting high energy density, fast charging, and extended cycle life in next-generation lithium-sulfur batteries for electric vehicles and portable electronics.