Recent Progress in and Perspectives on Emerging Halide Superionic Conductors for All-Solid-State Batteries

Abstract Rechargeable all-solid-state batteries (ASSBs) are considered to be the next generation of devices for electrochemical energy storage. The development solid-state electrolytes (SSEs) is one most crucial subjects in field storage chemistry. newly emerging halide SSEs have recently been intensively studied application ASSBs due their favorable combination high ionic conductivity, exceptional chemical and stability, superior mechanical deformability. In this review, a critical overview development, synthesis, stability remaining challenges given. design strategies optimizing conductivity SSEs, such as element substitution crystal structure design, summarized detail. Moreover, associated issues terms solvent compatibility, humid air corresponding degradation mechanisms discussed. particular, advanced situ/operando characterization techniques applied halide-based highlighted. addition, comprehensive understanding interface issues, cost scalable processing faced by practical provided. Finally, future perspectives on how high-performance electrode/electrolyte materials given, which instructive guiding conversion Graphical given facing SSEs. like elements substitution, structures Future materials.