Ionic conductivity

Electronegativity

Engineering

Electrochemistry

Metallurgy

Materials science

Electrochemical window

Power (physics)

Inorganic chemistry

Chemical engineering

Physical chemistry

Thermodynamics

Physics

Nanotechnology

Organic chemistry

Chemical stability

Energy storage

Conductivity

Chemistry

Electrode

Sulfide

Electrolyte

Fast ion conductor

Advanced Materials

Due to their high ionic conductivity and adeciduate mechanical features for lamination, sulfide composites have received increasing attention as solid electrolyte in all-solid-state batteries. Their smaller electronegativity and binding energy to Li ions and bigger atomic radius provide high ionic conductivity and make them attractive for practical applications. In recent years, noticeable efforts have been made to develop high-performance sulfide solid-state electrolytes. However, sulfide solid-state electrolytes still face numerous challenges including: 1) the need for a higher stability voltage window, 2) a better electrode–electrolyte interface and air stability, and 3) a cost-effective approach for large-scale manufacturing. Herein, a comprehensive update on the properties (structural and chemical), synthesis of sulfide solid-state electrolytes, and the development of sulfide-based all-solid-state batteries is provided, including electrochemical and chemical stability, interface stabilization, and their applications in high performance and safe energy storage.

Sulfide‐Based Solid‐State Electrolytes: Synthesis, Stability, and Potential for All‐Solid‐State Batteries