Description

Lithium Sulfide is an inorganic compound with the chemical formula Li₂S, serving as a key precursor in advanced material synthesis. Its primary commercial value lies in its role as a critical component for solid-state electrolytes and cathode materials in next-generation lithium-sulfur and solid-state batteries. This material is essential for manufacturers and R&D teams in the energy storage, battery technology, and specialty chemical sectors seeking to develop higher energy density and safer battery systems.

Application

• Solid-State Battery Electrolytes: A fundamental raw material for synthesizing sulfide-based solid electrolytes (e.g., Li₃PS₄, Li₁₀GeP₂S₁₂) which enable safer, high-performance all-solid-state batteries.
• Lithium-Sulfur Battery Cathodes: Used as a precursor or direct active material in the cathode construction of Li-S batteries, contributing to their high theoretical energy density.
• Chemical Synthesis: Acts as a strong nucleophile and reducing agent in organic and inorganic synthesis for producing various lithium-containing compounds and sulfur derivatives.
• Phosphor and Luminescent Materials: Employed in the preparation of sulfide-based phosphors for displays, lighting, and optoelectronic devices.
• Solid Lubricants and Coatings: Imparts specific lubricating properties in high-temperature or specialized coating formulations.
• Research & Development: Serves as a critical reagent in academic and industrial labs for developing new energy storage concepts and material science innovations.

Basic Information

Product Name	Lithium Sulfide
CAS No.	12136-58-2
Molecular Formula	Li₂S
Molecular Weight	45.95 g/mol
Synonyms	Lithium sulfide (Li₂S); Dilithium monosulfide; Dilithium sulfide; Lithium monosulfide; Lithiumsulfid; EINECS 235-228-1
EINECS	235-228-1

Quality Control

Our Lithium Sulfide is produced and handled under stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay, impurity profiling (heavy metals, anions), and physical characterization. Certificates of Analysis (COA) documenting all test results are provided and can be tailored to meet specific customer or regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, this material must be stored under a dry, inert atmosphere (e.g., argon or nitrogen) in a cool, dry place. Recommended storage temperature is 15-25°C. Keep the container tightly sealed in a dry environment to prevent degradation and ensure long-term stability.

Specification

Item	Specification
Appearance	Yellowish to white crystalline powder or lumps
Identification (IR)	Conforms
Assay (Li₂S)	≥ 99.9%
Water Content (KF)	≤ 0.1%
Chloride (Cl)	≤ 50 ppm
Sulfate (SO₄)	≤ 100 ppm
Heavy Metals (as Pb)	≤ 10 ppm
Particle Size (D50)	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.