The chemistry of halide-based solid electrolytes: unlocking advances in solid-state Li-ion batteries

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Liquid electrolytes in lithium-ion batteries (LIBs) present safety risks due to flammability.
• Solid-state batteries (SSBs) promise higher energy density and improved safety.
• Halide-based materials are emerging as promising inorganic solid electrolytes for SSBs.

Purpose of the Study:

• To review recent advancements in halide solid electrolytes for SSBs.
• To discuss the design, synthesis, and electrochemical performance of these materials.
• To identify challenges in integrating halide solid electrolytes into functional SSBs.

Main Methods:

• Literature review of recent research on halide solid electrolytes.
• Analysis of material properties, including ionic conductivity and mechanical stability.
• Evaluation of electrochemical performance data and integration challenges.

Main Results:

• Halide solid electrolytes exhibit remarkable ionic conductivity and mechanical properties.
• Advances in design and synthesis have improved their electrochemical performance.
• Key challenges remain in achieving seamless integration into practical SSB devices.

Conclusions:

• Halide solid electrolytes are crucial for advancing SSB technology.
• Continued research is needed to overcome integration challenges for widespread adoption.
• SSBs with halide electrolytes are poised to contribute to sustainable energy solutions.