Lithium Sulfide Li2S | Li2S+GeS2+P2S5/Li2S+SiS2+Al2S3 Featured Image

Lithium Sulfide Li₂S | Li₂S+GeS₂+P₂S₅/Li₂S+SiS₂+Al₂S₃

Description

Lithium Sulfide Li₂S 3N 4N (99.9%, 99.99%) is yellowish white crystal, CAS 12136-58-2, MW 45.95, density 1.66g/cm³, melting point 938°C, boiling point 1372°C, reacts strongly with water and soluble in water, ethanol and acid but insoluble in alkali. Lithium Sulfide exists in two forms of orthorhombic and cubic structure with density of 1.75g/cm³ and 1.63g/cm³ respectively. Being an anti-fluorite compound semiconductor and its cubic Li₂S an indirect band-gap semiconductor of 3.865 eV, Lithium Sulfide is specially designed for high performance batteries application where can be either applied as electrode material or as precursor for solid electrolytes. Compared with organic liquid or gel electrolyte, solid electrolyte Lithium Sulfide has the advantages of high safety, thermal stability and electrochemical stability, greater lithium ion conductivity and is safe in a wide voltage range.

Applications

Lithium Sulfide Li₂S and Li₂S+GeS₂+ P₂S₅and Li₂S+SiS₂+ Al₂S₃are considered to be a promising cathode material for safer energy storage cells, which has long life, high volume and high energy characteristics, and will become the development trend of electrolyte material in rechargeable lithium-ion batteries, glass rubber, friction equipment and for light and safe portable electronic devices etc. Sulfide Solid Electrolytes Lithium Sulfur Li₂S and Li₂S+GeS₂+ P₂S₅and Li₂S+SiS₂+ Al₂S₃ are also growing an important part of clean energy system for power supply and energy storage equipment for military, electric vehicle, ship and aerospace.

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Technical Specification

Sulfide Compounds

Sulfide Compounds mainly refer to the metal elements and metalloid compounds, which have stoichiometric composition changing within a certain range to form a compound-based solid solution. Inter-metallic compound is of its excellent properties between the metal and ceramic, and become an important branch of the new structural materials. Sulfides Compound of Arsenic Sulfide As₂S₃, Bismuth Sulfide Bi₂S₃, Gallium Sulfide Ga₂S₃, Germanium Sulfide GeS₂, Indium Sulfide In₂S₃, Lithium Sulfide Li₂S, Molybdenum Sulfide MoS₂, Selenium Sulfide SeS₂, Sliver Sulfide Ag₂S, Solid Electrolytes Li₂S+GeS₂+P₂S₅and Li₂S+SiS₂+ Al₂S₃multi-element sulfide composite electrode material, Tin Selenide SnS₂, Titanium Sulfide TiS₂, Zinc Sulfide ZnS and its (Li, Na, K, Be, Mg, Ca) compounds and Rare Earth compounds can also be synthesized in form of powder, granule, lump, bar, crystal and substrate

Lithium Sulfide Li₂S 3N 4N (99.9%, 99.99%) and Solid Electrolyte Materials Li₂S+GeS₂+ P₂S₅and Li₂S+SiS₂+ Al₂S₃99.99% 4N at Western Minmetals (SC) Corporation can be delivered in form of powder -60mesh, -80mesh, granule 1-6mm, lump 1-20mm, chunk, blank, bulk crystal and single crystal etc or as customized specification to reach the prefect solution. Lithium Sulfide Li₂S 250g, 500g in polyethylene bottle, or 1kg-5kg in composite bag, carton box outside.

No.	Item	Standard Specification
No.	Item	Formula	Purity	Size & Packing
1	Arsenic Sulfide	As₂S₃	5N	-60mesh, -80mesh powder, 1-20mm irregular lump, 1-6mm granule, target or blank. 500g or 1000g in polyethylene bottle or composite bag, carton box outside. Sulfide compounds composition is available upon request. Special specification and application can be customized for perfect solution.
2	Bismuth Sulfide	Bi₂S₃	4N
3	Cadmium Sulfide	CdS	5N
4	Gallium Sulfide	Ga₂S₃	4N 5N
5	Germanium Sulfide	GeS₂	4N 5N
6	Indium Sulfide	In₂S₃	4N
7	Lithium Sulfide	Li₂S	3N 4N
8	Molybdenum Sulfide	MoS₂	4N
9	Selenium Sulfide	SeS₂	4N 5N
10	Silver Sulfide	Ag₂S	5N
11	Tin Sulfide	SnS₂	4N 5N
12	Titanium Sulfide	TiS₂	3N 4N 5N
13	Zinc Sulfide	ZnS	3N
14	Sulfide Solid Electrolytes	Li₂S+GeS₂+P₂S₅	4N
14	Sulfide Solid Electrolytes	Li₂S+SiS₂+ Al₂S₃	4N

No.	Item	Standard Specification
No.	Item	Purity	Impurity PPM Max each
1	Lithium Sulfide Li₂S	3N 99.9%	Co 35, Cu 20, Al/Bi/Sb 30, Mg 50, Pb/Mn/As/Te 10, Fe/Ti/Si 80, Na 100
2	Lithium Sulfide Li₂S	4N 99.99%	Ag/Al/Cu/Mg/Ni/Cd/Zn/Pb/As 1.0, Ca 4.0, Fe/Si 5.0, Mn 3.0
3	Phosphorous Sulfide P₂S₅	3N 99.9%	Ag/Cu/Mg/Bi/Sb/Zn/Pb 50, Al/Co 40, Au 30, Fe 90

Sulfide Solid Electrolytes

Sulfide Solid Electrolytes Li₂S+GeS₂+P₂S₅and Li₂S+SiS₂+Al₂S₃ 3N 4N (99.9%, 99.99%) All-solid-state lithium battery with non combustible solid electrolyte can avoid the risk of inflammable and explosive, short life and low energy density, meanwhile solid electrolytes can also effectively inhibit the formation of lithium dendrite to improve service life of the battery. Among which sulfide-based solid electrolytes have become more widespread and attracted significant attention because they possess high conductivities and good mechanical properties for the formation of effective interfaces between solids. The most typical sulfide crystalline solid electrolyte is thio-LISICON, a lithium superionic conductor found in the Li₂S-GeS₂-P₂S₅ system, which demonstrates highest lithium-ion conductivity of 2.2 × 10^-3s cm^-1 at room temperature, together with negligible electronic conductivity, high electrochemical stability, wide operating voltage window. Li₂S+GeS₂+ P₂S₅and Li₂S+SiS₂+ Al₂S₃, a novel and promising solid electrolytes prepared by a high-energy ball-milling process or by a conventional melt-quenching method, act as both an ionic conductor and a separating membrane in all-solid-state rechargeable lithium batteries.