Mg3S

Mg₃S is an inorganic ceramic compound composed of magnesium and sulfur, belonging to the family of metal sulfide ceramics. While not widely deployed in legacy industrial applications, it represents a research-stage material of interest in electrochemistry and solid-state chemistry, particularly as a potential electrolyte or cathode material for next-generation energy storage systems. Its potential in sulfide-based solid electrolytes stems from ion-conducting properties sought for all-solid-state batteries and other electrochemical devices, though maturity and scalability remain active areas of investigation.