Solid-State Electrolytes for Lithium Sulfur Batteries

In this talk we review how solid-state electrolytes (SSEs) can be used to improve the performance of lithium sulfur batteries. The design strategy for a semi-solid lithium sulfur battery depends on which type of liquid electrolyte is used. For highly solvating liquid electrolytes, an impermeable SSE separator can be used to block the parasitic polysulfide redox shuttle. For sparingly solvating liquid electrolytes, a SSE powder cathode additive can be used to improve rate performance and active material utilization. The merits of each design will be discussed and compared with a particular focus on cell-level safety.