Molecular Design of Nitrile Electrolytes Enabling Lithiated Silicon–Sulfur Batteries with Quasi‐Solid‐State Sulfur Reaction

at 0.1C, and achieves a high capacity retention of 90.2% over 100 cycles at 0.2C with an average Coulombic efficiency of 99.9%. This work highlights the essence of molecular engineering for manipulating the primary reactions and interphasial behaviors at both electrodes toward high performance sulfur batteries.