Li1 S1

semiconductor
· Li1 S1

Lithium sulfide (Li₂S) is an ionic semiconductor compound belonging to the family of lithium chalcogenides, characterized by a rock-salt crystal structure. This material is primarily investigated in battery research and solid-state electrolyte applications, where its high ionic conductivity and wide electrochemical window make it a promising candidate for next-generation lithium-ion and lithium-metal batteries seeking improved energy density and safety. Compared to conventional liquid electrolytes, lithium sulfide-based systems offer enhanced thermal stability and potential for higher voltage operation, though engineering implementation faces challenges related to manufacturing scalability and interfacial stability with electrode materials.

solid-state battery electrolyteslithium-metal battery researchhigh-energy-density energy storagethermal management applicationselectrochemical devices

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Bulk Modulus(K)
5,990.1
ksi—
Shear Modulus(G)
147.9
ksi—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)
0.02290
eV—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Formation Energy(ΔHf)
-0.6910
eV/atom—
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Export Control

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.
Li1 S1 — Properties & Data | MatWorld