Li2S All Solid State Battery Raw Materials Anhydrous High Purity Lithium Sulfide
Model:Li2S
Test Standard:GB/T 11064
Purity:≥99.9% (4N grade)
Crystal Structure:Cubic (anti-fluorite)
Melting Point:938°C
Density:1.66 g/cm³
Particle Size:D50 ≤5 μm (customizable)
Moisture Sensitivity:<0.1 ppm H₂O (Ar-sealed)
MOQ: 10g
Leading time: 5-7 working days
Lithium Sulfide Li2S All-solid-state Battery Raw Material Anhydrous High-purity Lithium Sulfide Purity 99.9%
Product Overview
Lithium sulfide (Li₂S, purity ≥99.9%) is a critical precursor material for sulfide-based solid-state electrolytes (SSEs) and lithium-sulfur (Li-S) batteries. As a white-to-yellow crystalline powder with an anti-fluorite structure, it enables ultra-high ionic conductivity (>10⁻³ S/cm) in SSEs like Li₆PS₅Cl and Li₁₀GeP₂S₁₂, while serving as a pre-lithiated cathode in Li-S systems.
Key Specifications
| Parameter | Standard | Result (ppm) |
|---|---|---|
| Test Standard | GB/T 11064 | – |
| Test Items | ||
| Sodium (Na) | – | 34.24 |
| Calcium (Ca) | – | 30.24 |
| Magnesium (Mg) | – | 4.55 |
| Iron (Fe) | – | 3.54 |
| Aluminum (Al) | – | 4.22 |
| Copper (Cu) | – | 2.89 |
| Lead (Pb) | – | 1.09 |
| Zinc (Zn) | – | ND (Not Detected) |
| Nickel (Ni) | – | 3.32 |
| Manganese (Mn) | – | 1.34 |
| Potassium (K) | – | 4.01 |
| Cadmium (Cd) | – | 8.39 |
| Chromium (Cr) | – | 9.6 |
| Phosphorus (P) | – | 9.0 |
| Silicon (Si) | – | ND (Not Detected) |
Material Advantages
- Solid-State Battery Performance
- Enables SSEs with ionic conductivity rivaling liquid electrolytes (10⁻²–10⁻³ S/cm).
- Reduces interfacial impedance in sulfide-based SSEs (e.g., Li₆PS₅Cl) by 50% vs. oxide alternatives.
- Lithium-Sulfur Battery Applications
- Theoretical energy density of 2,600 Wh/kg (vs. 300 Wh/kg for NMC).
- Pre-lithiated design eliminates need for external lithium sources.
- Industrial Scalability
- Compatible with roll-to-roll (R2R) production for SSE membranes (20–40 μm thickness).
- Cost projected to drop to $200/kg by 2030 (currently ~$480/kg).
Applications
- Solid-State Electrolytes: Li₆PS₅Cl, Li₃PS₄, and LGPS-type SSEs.
- Li-S Battery Cathodes: Li₂S@C nanocomposites (500+ cycles achieved).
- Research: Prototyping of 500+ Wh/kg all-solid-state cells.