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.
关键词
全固态电池/硫化物固态电解质/Li6PS5Cl/离子电导率/硫银锗矿型/高能球磨/固相合成
Key words
all-solid state battery/sulfide solid electrolyte/Li6PS5Cl/ionic conductivity/argyrodite type/high energy ball milling/solid-phase synthesis
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