(State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China)
All-solid-state lithium-ion batteries (ASS-LIBs) is a promising next generation energy storage (EES) technology due to their high energy density and excellent safety. However, low capacity and short cycle life of ASS-LIBs restrict their application in EES. The cathodic capacity utilization and cycle life of ASS-LIBs are limited by the poor solid-solid interfacial stability of cathodic materials (including active material, electronic conductor, ionic conductor and the solid-state electrolyte). In this review, the stability of solid-solid interface of cathodic materials in ASS-LIBs and the optimization methods are overviewed and discussed, including chemical stability, electrochemical stability, mechanical stability and thermo stability. Meanwhile, the common stratagem for the stability of solid-solid cathodic interface optimization in ASS-LIBs are summarized. We hope that the review can provide a comprehensive information for the development and application of ASS-SIBs.