Emerging Halide Superionic Conductors for All-Solid-State Batteries: Design, Synthesis, and Practical Applications

Recently, halide superionic conductors have emerged as promising solid electrolyte (SE) materials for all-solid-state batteries (ASSBs), owing to their inherent properties combining high Li+ conductivity, good chemical and electrochemical oxidation stabilities, and mechanical deformability, compared to sulfide or oxide SEs. In this Review, recent advances in halide Li+- and Na+-conducting SEs are comprehensively summarized. After introducing the ionic diffusion mechanism and related governing factors of the crystal structures, we discuss the design strategies, such as the substitution and synthesis protocols, of the halide materials for further improving their properties. We review theoretical and experimental…

• NS
  National Science Foundation

  Awards: 1940166, 2118838
• UO
  University of Maryland
• YU
  Yonsei University

  Award: 2021-22-0326
• MO
  Ministry of Science, ICT and Future Planning

  Award: NRF-2018R1A2B6004996
• SS
  Samsung Science and Technology Foundation

  Award: SRFC-MA2102-03
• KE
  Korea Evaluation Institute of Industrial Technology

  Award: 20007045