Abstract: Lithium-sulfur (Li-S) battery employing lithium as the anode and sulfur as the cathode possesses the highest theoretical energy density of 2600 W·h·kg-1 among the rechargable batteries consisted by the solid-state active materials. Sulfur and lithium resources are also abundant and low cost. To replace the organic liquid electrolyte by the solid electrolyte, the all-solid-state battery systems are expected to solve the safety issues and improve the cycling stability of Li-S batteries. It is becoming the hot topic in reaseach and development of rechargeable batteries. This paper presents a comprehensive review of the progress of all solid-state Li-S batteries in recent years, including solid electrolytes, sulfur-based cathodes, lithium-based anodes, electrode/electrolyte interface, and cell fabrication methods. The developments of all solid-state Li-S batteries are prospected as well.

Key words: all solid-state lithium sulfur batteries, solid electrolyte, sulfur cathode, lithium anode, electrode/electrolyte interface