Recent Advances in Electrolytes for Lithium–Sulfur Batteries

The rapidly increasing demand for electrical and hybrid vehicles and stationary energy storage requires the development of “beyond Li‐ion batteries” with high energy densities that exceed those of state‐of‐the‐art Li‐ion batteries. Li–S batteries, which have very high theoretical capacities and energy densities, are believed to be one of the most promising candidates. The sulfur‐based electrochemical reaction requires novel electrolytes to replace the classical carbonate‐based electrolyte systems inherited from Li‐ion batteries because carbonates are incompatible with the intermediate polysulfides in Li–S batteries. In addition, the theoretical specific capacities and projected energy densities of Li–S…