Lithium sulfide
Product name: Lithium sulfide
Synonym(s): (lithiosulfanyl)lithium
CAS Number: 12136-58-2
Introduction
| grade | battery grade |
| Quality Level | 300 |
| assay | 99.98% trace metals basis |
| form | powder |
| composition | Li2S |
| reaction suitability | reagent type: catalyst core: lithium |
| density | 1.66 g/mL at 25 °C (lit.) |
| application(s) | battery manufacturing battery manufacturing |
| storage temp. | 2-8°C |
| SMILES string | [Li]S[Li] |
| InChI | 1S/2Li.S |
| InChI key | ZWDBUTFCWLVLCQ-UHFFFAOYSA-N |
General description
Lithium sulfide powder is a high-purity, inorganic compound that appears as a white to yellowish crystalline powder. It has a molecular weight of 45.95 g/mol and a density of 1.82 g/cm³. Lithium sulfide is a strong nucleophile and has the chemical formula Li₂S. It readily reacts with water to produce lithium hydroxide and hydrogen sulfide gas. It is also soluble in some organic solvents, such as pyridine and dimethyl sulfoxide.
Application
High-purity lithium sulfide is primarily used as a precursor in the synthesis of other lithium compounds such as lithium thioacetate, lithium tetrafluoroborate, and thio-LISICONs, which are used in lithium-ion batteries among other applications. High-purity lithium sulfide can also be used directly in battery applications as a cathode material in lithium-sulfur batteries. With a theoretical capacity of up to 1166 mAh/g, almost four times that of lithium cobalt oxide, lithium sulfide has gained attention as next-generation cathode material. Additionally, lithium sulfide is used as a precursor in the semiconductor industry for the production of thin-film transistors (TFTs) and other electronic devices, especially lithium sulfide-phosphorus oxide (Li2S-P2O5) TFTs. It is also used in the chemical manufacturing industry as a precursor for lithium hydride, lithium borohydride, and lithium amide, among many other applications.
