LPSCl Argyrodite Sulfide Solid Electrolyte, Multi-Particle Sizes
Ionic conductivity up to 10 mS/cm — among the highest reported for argyrodite-type sulfide electrolytes worldwide. Choose from 3 optimized compositions (Li₆PS₅Cl, Li₅.₅PS₄.₅Cl₁.₅, Li₅.₅PS₄.₅(Cl,Br)₁.₅) and particle sizes from >5 µm down to <0.5 µm for ASSB research.
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Name: LPSCl Argyrodite Sulfide Solid Electrolyte (Li₆PS₅Cl Family) — Multi-Particle Sizes
Material Form: Crystalline powder (multiple particle size grades)
Product Code: XN-LPSCL
Description:
LPSCl is a family of argyrodite sulfide solid-state electrolytes built around the Li₆PS₅Cl framework, delivering some of the highest room-temperature ionic conductivities reported for sulfide electrolytes — up to 10 mS/cm. As a result, LPSCl is the most widely deployed sulfide chemistry in commercial all-solid-state battery (ASSB) development. Xnergy supplies three composition variants (Li₆PS₅Cl, Li₅.₅PS₄.₅Cl₁.₅, and Li₅.₅PS₄.₅(Cl,Br)₁.₅) across multiple particle size grades, enabling customers to optimize for either bulk conductivity or composite electrode interface design.
Application:
This material serves as a primary electrolyte for all-solid-state lithium batteries, including catholyte for high-loading composite cathodes, anode-side separator paired with halide electrolytes (LZC, LZCO, LNOC, LIC), and bulk separator in pellet and pouch cell architectures. Furthermore, it supports Li-S battery research, ASSB cell prototyping, and pilot-scale solid-state battery manufacturing.
Specifications — Li₆PS₅Cl (Standard Argyrodite):
| Composition | Primary Particle Size (SEM) | Ionic Conductivity @ 27 °C | Electronic Conductivity @ 27 °C |
|---|---|---|---|
| Li₆PS₅Cl | > 5.0 µm | > 4.0 mS/cm | < 1 × 10⁻⁸ S/cm |
| Li₆PS₅Cl | 3.0 ± 0.5 µm | > 3.0 mS/cm | < 1 × 10⁻⁸ S/cm |
| Li₆PS₅Cl | < 1.0 µm | > 2.0 mS/cm | < 1 × 10⁻⁸ S/cm |
Specifications — Li₅.₅PS₄.₅Cl₁.₅ (Cl-Rich Variant):
| Composition | Primary Particle Size (SEM) | Ionic Conductivity @ 27 °C | Electronic Conductivity @ 27 °C |
|---|---|---|---|
| Li₅.₅PS₄.₅Cl₁.₅ | > 5.0 µm | > 10 mS/cm | < 1 × 10⁻⁸ S/cm |
| Li₅.₅PS₄.₅Cl₁.₅ | 3.0 ± 0.5 µm | > 7.0 mS/cm | < 1 × 10⁻⁸ S/cm |
| Li₅.₅PS₄.₅Cl₁.₅ | < 1.0 µm | > 5.0 mS/cm | < 1 × 10⁻⁸ S/cm |
Specifications — Li₅.₅PS₄.₅(Cl,Br)₁.₅ (Mixed Halide):
| Composition | Primary Particle Size (SEM) | Ionic Conductivity @ 27 °C | Electronic Conductivity @ 27 °C |
|---|---|---|---|
| Li₅.₅PS₄.₅(Cl,Br)₁.₅ | 3.0 ± 0.5 µm | > 7.0 mS/cm | < 1 × 10⁻⁸ S/cm |
| Li₅.₅PS₄.₅(Cl,Br)₁.₅ | < 1.0 µm | > 5.0 mS/cm | < 1 × 10⁻⁸ S/cm |
| Li₅.₅PS₄.₅(Cl,Br)₁.₅ | < 0.5 µm | > 4.0 mS/cm | < 1 × 10⁻⁸ S/cm |
Values measured by Xnergy on cold-pressed pellets at 27 °C. Typical values for reference; not guaranteed unless otherwise specified.
Characteristics:
Ultra-high ionic conductivity (up to 10 mS/cm)
Li₅.₅PS₄.₅Cl₁.₅ at >5 µm grade delivers >10 mS/cm — among the highest reported for any solid electrolyte. Moreover, the negligible electronic conductivity (<10⁻⁸ S/cm across all variants) prevents internal short-circuiting and self-discharge in finished cells.
Three composition variants for application optimization
Standard Li₆PS₅Cl provides the most extensively studied chemistry with rich literature support. Cl-rich Li₅.₅PS₄.₅Cl₁.₅ delivers maximum bulk conductivity. Mixed-halide Li₅.₅PS₄.₅(Cl,Br)₁.₅ offers tunable lattice properties for specific cell architectures.
Multi-grade particle size from micron to sub-micron
Coarse grades (>5 µm) maximize pellet conductivity for separator layers. Mid-range grades (3 µm) balance conductivity with processability. Fine and sub-micron grades (<1 µm, <0.5 µm) provide larger surface area for catholyte mixing and intimate cathode interface contact in composite electrodes.
Cold-pressable for ASSB assembly
All variants can be densified at room temperature without high-temperature sintering. Therefore, customers can fabricate coin cells, pellet cells, and pouch cells using standard hydraulic press equipment.
Packaging & Storage:
The material ships vacuum-sealed under inert atmosphere in moisture-barrier aluminum-laminated bags. Therefore, customers should store sealed in an Ar or N₂ glovebox, protected from moisture. Because LPSCl sulfide electrolytes are highly moisture-sensitive — they hydrolyze on contact with water to release H₂S — handle exclusively in a controlled dry environment with dew point < –40 °C. Reseal promptly after opening.
Safety:
For research and industrial use only. Hydrolysis of sulfide electrolytes releases hydrogen sulfide (H₂S), a toxic gas. Handle exclusively in a glovebox or well-ventilated dry environment. Wear full PPE (chemical-resistant gloves, lab coat, safety goggles, respirator if outside glovebox). Refer to SDS for complete safety information.
Note: Values listed above are typical and for reference only. Performance may vary depending on cell architecture, cathode selection, and test protocol. Compare with our other solid electrolytes: LGPS (Li₁₀GeP₂S₁₂), LNOC (LiNbOCl₄) at ~7 mS/cm, LIC (Li₃InCl₆) at 1.4 mS/cm, and LZCO (Li₂ZrOCl₄) at 1.55 mS/cm. Pair with our high-purity Li₂S powder for in-house electrolyte synthesis.
