Electrolyte Composition Governs Polysulfide Shuttling and Electrochemical Stability in Li/FeS₂ Batteries: Organic, Ionic Liquid, and Hybrid Electrolytes Compared
This study demonstrates that a hybrid organic–ionic liquid electrolyte optimizes Li/FeS₂ battery performance by simultaneously enhancing ionic transport and significantly suppressing polysulfide shuttling, thereby achieving superior electrochemical stability and reduced sulfur loss compared to conventional organic or pure ionic liquid electrolytes.