Used as a liquid electrolyte in lithium-sulfur batteries, consisting of 1.0M LiTFSI in DOL:DME (1:1 vol%) with 1.0% LiNO3 additive. It enables efficient lithium-ion conduction, improves anode stability, and suppresses polysulfide shuttle effects, enhancing battery performance, cycle life, and safety in energy storage applications such as electric vehicles and portable devices.