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<p>Halide solid-state electrolytes (HSSEs) hold great promise for all-solid-state batteries, but their ionic conductivity and electrochemical stability still remain key challenges in practical applications. This review systematically links the evolutionary trajectory of HSSEs, crystal structure–property relationships across different halide systems, sublattice engineering strategies, and rational crystal system design as new synergistic pathways to achieve significantly enhanced electrochemical performance. Finally, we also discuss challenges and machine learning for halide development.</p>

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Sublattice engineering and crystal system design: microscopic pathways to enhanced performance in halide solid-state electrolytes

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年8月4日

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  • Yichen Xue,
  • Tianhong Zhou,
  • Hang Li,
  • Yingpeng Liao,
  • Jiarui Yao,
  • Yan Zhao

摘要

Halide solid-state electrolytes (HSSEs) hold great promise for all-solid-state batteries, but their ionic conductivity and electrochemical stability still remain key challenges in practical applications. This review systematically links the evolutionary trajectory of HSSEs, crystal structure–property relationships across different halide systems, sublattice engineering strategies, and rational crystal system design as new synergistic pathways to achieve significantly enhanced electrochemical performance. Finally, we also discuss challenges and machine learning for halide development.