Bulk-Type All-Solid-State Lithium Secondary Battery with Li₂S-P₂S₅ Thin-Film Separator

抄録

Bulk-type all-solid-state batteries currently use a compressed powder pellet with the thickness of several hundred micrometers as a solid electrolyte separator. In this study, all-solid-state lithium secondary batteries (In/LiCoO₂) with a thin Li₂S-P₂S₅ solid electrolyte separator were constructed; their charge-discharge performance was investigated. The all-solid-state batteries using the Li₂S-P₂S₅ separator with a thickness of 3 µm were charged and discharged with the capacity of 93 mAh g⁻¹. This result suggests that bulk-type all-solid-state batteries were successfully prepared with the solid electrolyte separator with several micrometer thicknesses.