Toward Scalable Liquid-Phase Synthesis of Sulfide Solid Electrolytes for All-Solid-State Batteries

All-solid-state batteries (ASSBs) are promising to be next-generation battery that provides high energy density and intrinsic safety. Research in the field of ASSBs has so far focused on development highly conductive solid electrolytes (SEs). The commercialization requires well-established large-scale manufacturing for sulfide SEs with ionic conductivity. However, synthesis remains at laboratory scale limited scalability owing their air sensitivity. liquid-phase would an economically viable technology SEs. Herein, we review a chemical perspective offers scalability, low cost, reaction kinetics. This guideline desirable solvent selection based solubility polarity characterized by donor number dielectric permittivity solvents. Additionally, offer deeper understanding recent works scalable using solubilizers reactant agents. We present outlook universal toward sulfide-based ASSBs.