Reassessing host selection in Cl-rich argyrodite electrolytes: the stability–conductivity trade-off under industrial dry-room conditions

Abstract

Under simulated industrial dry-room conditions, Cl-rich argyrodite Li_5.4PS_4.4Cl_1.6 better preserves its structure, Li-ion transport, electronic insulation and cell performance than the high-conductivity Li_5.5PS_4.5Cl_1.5, owing to a pre-existing amorphous LiCl surface layer. These results refine host selection criteria for Cl-rich argyrodite electrolytes.