Electrolyte for a Lithium-Sulfur Battery Including an Ether-Based Solvent and Lithium-Sulfur Battery Including the Same

DEE-DME-Based Lithium-Sulfur Battery Electrolyte Technology

This technology relates to an electrolyte that improves reaction stability and performance in lithium-sulfur batteries by optimizing an ether-based mixed solvent and lithium-salt composition.

Conventional lithium-sulfur batteries have suffered from polysulfide accumulation and poor long-term stability, resulting in shortened lifespan. This technology applies an electrolyte in which DEE and DME are mixed at a specific volume ratio to control the solvation structure and stabilize the reactions of sulfur-based active materials.

As a result, it can rapidly induce LiPS conversion reactions and suppress accumulation, thereby improving the efficiency, cycle life, and high-power driving stability of lithium-sulfur batteries.

Key Features:

• It uses an ether-based mixed solvent including DEE and DME as the electrolyte.
• It optimizes the solvation structure and interfacial reactions through a combination of lithium salts and additives.
• It improves long-term life by enhancing reaction stability of the sulfur cathode active material and lithium-metal anode.