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High-Purity Lithium Sulfide for Sulfide Solid Electrolytes

Everlyte supplies 3N-grade high-purity lithium sulfide across a range of particle-size distributions, helping customers manufacture high-quality solid electrolytes.

fine-particle high-purity lithium sulfide
High-Purity Li₂S

Fine-Particle High-Purity Lithium Sulfide

Manufactured through Everlyte's proprietary scalable process using lower-cost lithium sources, the product is designed for scaled production of Li₆PS₅Cl, Li₅.₅PS₄.₅Cl₁.₅, Li₃PS₄, LPSCB, LGPS and other sulfide solid electrolyte chemistries.

  • Critical impurities and moisture are tightly controlled
  • Average particle size can be as low as 1 μm
  • Standard packaging is 2–5 kg per container, with larger packaging formats also supported
  • Evaluation samples are available
  • Customization in particle size, product characteristics and packaging can be provided based on customer process requirements
Request Samples or COA
Specification

Published Product Specifications

The table below presents the published control specifications and test methods from the current product COA. Actual batch results are reported in the corresponding COA.

Test ItemELS-B2 SpecificationMethodology
Purity≥99.9%Metal basis
Na≤50 ppmICP
K≤30 ppmICP
Fe≤10 ppmICP
Al≤10 ppmICP
Ti≤10 ppmICP
Si≤10 ppmICP
Carbon Content≤0.03%High-frequency combustion–infrared absorption
Oxygen Content≤0.1%Inert-gas fusion–infrared absorption
Moisture Content≤50 ppmMoisture analyzer
Particle Size DistributionD50: 2.0±0.2 μm
D10, D90 and Dmax are reported in the batch COA		Laser diffraction
A representative batch measured D10 1.2 μm, D50 1.9 μm, D90 4.3 μm and Dmax 8.0 μm. These values apply only to that batch and are not fixed specifications for every lot.
Characterization

Representative Product Analysis

XRD, SEM and particle-size analysis are used to evaluate phase, morphology and powder size distribution. Contact us for the latest batch COA.

XRDSEMParticle SizeBatch-specific COA
Everlyte Li₂S XRD, SEM and particle-size analysis
01 / STORAGE

Storage

Store sealed under a dry inert atmosphere and prevent exposure to air and moisture.

02 / SAFETY

Safety

Lithium sulfide may release hydrogen sulfide upon contact with water and should be handled by trained professionals with appropriate safety protective measures in place.

03 / CUSTOMIZATION

Customization

Particle-size distribution, packaging and selected specifications can be evaluated for customer processes.

Technical Insight

Further Reading: High-Purity Lithium Sulfide Knowledge Base

A practical overview of Li₂S purity, oxygen, moisture, carbon, particle size and scalable supply.

Read the technical article