Li2 S1
semiconductor· Li2 S1
Lithium sulfide (Li₂S) is an ionic semiconductor compound belonging to the lithium chalcogenide family, characterized by a rock-salt crystal structure. While primarily investigated as a research material rather than a widespread commercial product, Li₂S is notable as a solid electrolyte and cathode material in next-generation lithium-metal and all-solid-state battery systems, where it offers high ionic conductivity and wide electrochemical stability windows compared to conventional liquid electrolytes. Engineers consider this material for energy storage applications where its structural rigidity and ionic transport properties could enable safer, higher-energy-density battery designs.
all-solid-state batterieslithium-metal battery cathodessolid electrolytesenergy storage researchnext-generation batterieshigh-energy-density power systems
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | — | ksi | — | — | |
Shear Modulus(G) | — | ksi | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | — | eV | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Formation Energy(ΔHf) | — | 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.