Lithium sulfide is a sulfide of lithium with the molecular formula Li₂S. It is soluble in water, soluble in ethanol and acids, but insoluble in alkali.

Properties

Chemical Formula : Li₂S

Appearance: White powder

Density : 1.66 g/mL at 25℃(lit.)

Melting point : 938°C          

Boiling point : 1372°C

Uses

It can be used as a potential electrolyte material in rechargeable lithium-ion batteries.