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Halogen-containing solid electrolytes (HSEs) offer safer, high-density all-solid-state batteries (ASSBs). This review explores HSE development, properties, and challenges for practical halide battery applications.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • All-solid-state batteries (ASSBs) are promising for enhanced safety and energy density due to solid-state electrolytes.
  • Halogen-containing solid electrolytes (HSEs) show potential for high ionic conductivity, deformability, and wide electrochemical windows.

Purpose of the Study:

  • To review the development of halide battery chemistry and HSEs for ASSBs.
  • To discuss the preparation, modification, properties, and challenges of HSEs in ASSBs.

Main Methods:

  • Review of existing literature on halide battery chemistry and HSEs.
  • Analysis of chemical action of halogens and ion transport mechanisms.
  • Discussion of preparation and characterization techniques for HSEs.

Main Results:

  • HSEs offer potential advantages but face challenges in preparation, characterization, and industrial scalability.
  • Understanding halogen chemistry and ion transport is crucial for optimizing HSE performance.
  • Current research highlights progress and remaining hurdles for halide-based ASSBs.

Conclusions:

  • HSEs are critical for advancing the safety and performance of next-generation rechargeable batteries.
  • Further research into low-cost, scalable preparation methods is needed for practical HSE applications.
  • Addressing current challenges will pave the way for widespread adoption of halide-based ASSBs.