Solid-Phase Synthesis and Properties of Sulfide Solid Electrolyte Li6PS5Cl
An argyrodite-type sulfide solid electrolyte Li6PS5Cl(LPSC)was solid-phase synthesized by adopting high energy ball milling in combination with heat treatment.It is found that prolonging ball milling time is conducive to crushing,mixing,grain refinement and amorphization reaction process of raw material powder;increasing sintering temperature is beneficial to the formation of a single pure phase,but too high temperature for sintering can make electrolyte melted and decomposed,leading to destroyed crystal structure.It is found that after 10 hours of ball milling and 8 hours of sintering at 550 ℃,the synthesized sulfide solid electrolyte exhibits higher ionic conductivity,reaching 3.57×10-3 S/cm.
all-solid state batterysulfide solid electrolyteLi6PS5Clionic conductivityargyrodite typehigh energy ball millingsolid-phase synthesis
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