Conversion Inorganic Interlayer of LiF/Graphene Composite in All-Solid-State Lithium Batteries

The issues at the interface between solid-state electrolyte (SSE) and electrodes limit the development of all-solid-state lithium batteries (ASSLBs). Herein, we report a LiF/graphene inorganic composite interlayer (ICI) which is in situ constructed at cathode/garnet interface by electrochemical pre-lithiation of fluorinated graphene (GF). The ICI with flexibility and ion-conductivity can improve the contact between cathode and garnet electrolyte, and thus enables the ASSLB stably operating for 60 cycles without any liquid conditions .