20 mS cm⁻¹ Li-argyrodite solid electrolyte produced <i>via</i> facile high-speed-mixing

Abstract

A novel efficient method is proposed to synthesize a large amount of Li_5.4PS_4.4Cl_1.6 precursor in only 5 minutes with a conductivity of 20 mS cm^-1 after sintering, which can replace the common ball-milling method. The ASSBs show excellent electrochemical performance with high loading (20 mg cm^-2) and great capacity retention (80% after 200 cycles). This is important for the industrial production of sulfide solid electrolytes for fabricating Ah-level ASSBs.