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. Atomfair 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.
| Chemical formula | Particle size | Specification | Ionic conductivity | Theoretical density |
|---|---|---|---|---|
| Li6PS5Cl | >5.0 um | 10g | >4.0 mS/cm,@27°C | 1.64 g/cm3 |
| 3.0 ± 0.5 um | >3.0 mS/cm,@27°C | |||
| <1.0 um | >2.0 mS/cm,@27°C |
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.
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.
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This material is highly moisture-sensitive and hydrolyzes on contact with water to release toxic hydrogen sulfide gas. Storage and handling must be performed exclusively in an inert atmosphere glovebox with a dew point below -40°C to prevent degradation.
- Moisture Sensitivity: Exposure to ambient moisture causes rapid hydrolysis, releasing H₂S and degrading ionic conductivity.
- Inert Atmosphere Requirement: Sealed bags must be opened and stored only in an argon or nitrogen glovebox.
- Packaging Integrity: The vacuum-sealed moisture-barrier bag must remain sealed until inside the glovebox.
- Resealing Protocol: After use, the bag must be resealed promptly and returned to inert storage.
- Containment Requirement: All handling must occur in a controlled environment with dew point < -40°C.
This procedure describes the safe transfer and use of moisture-sensitive LPSCl powder inside a glovebox. The steps ensure that the material remains protected from moisture and prevents hazardous H₂S release.
Required Equipment: Argon-filled glovebox with dew point below -40°C
- Transfer to glovebox
Transfer the sealed moisture-barrier bag into an argon-filled glovebox with a dew point below -40°C. - Open bag
Open the bag only inside the glovebox to prevent moisture exposure and H₂S release. - Use powder
Use the powder for electrolyte preparation within the glovebox, maintaining inert atmosphere throughout. - Reseal bag
Reseal the bag promptly after removing the desired amount of powder to preserve the remaining material.
How does the particle size of LPSCl (Li6PS5Cl) affect its ionic conductivity?
LPSCl ionic conductivity decreases with smaller particle size. The >5.0 µm grade delivers >4.0 mS/cm at 27°C, the 3.0±0.5 µm grade delivers >3.0 mS/cm, and the <1.0 µm grade delivers >2.0 mS/cm. This trade-off allows optimization between bulk conductivity and composite electrode interface design.
Which halide electrolytes are compatible with LPSCl for anode-side separator applications?
LPSCl can be paired with halide electrolytes LZC, LZCO, LNOC, and LIC for use as an anode-side separator. This compatibility is noted in the product description for all-solid-state battery architectures.
What are the storage and handling requirements for LPSCl sulfide electrolyte to prevent moisture degradation?
LPSCl is highly moisture-sensitive and hydrolyzes to release H2S. It ships vacuum-sealed in moisture-barrier bags and should be stored in an Ar or N2 glovebox. Handle exclusively in a controlled dry environment with dew point below –40 °C, and reseal promptly after opening.
Atomfair LPSCl (Li6PS5Cl) sulfide solid-state electrolyte powder offers a room-temperature ionic conductivity up to 10 mS/cm across three particle size grades, making it a primary candidate for ASSB separators and composite cathodes, but requires strict inert-atmosphere handling due to moisture sensitivity.
Positive
- High room-temperature ionic conductivity: Li6PS5Cl delivers ionic conductivity up to 10 mS/cm at 27°C, with the >5.0 µm grade exceeding 4.0 mS/cm, enabling bulk separator and composite cathode operation with minimal resistance.
- Multiple particle size grades for interface optimization: Available in >5.0, 3.0±0.5, and <1.0 µm sizes, allowing users to trade between higher bulk conductivity (coarse) and improved composite-electrode particle packing (fine) without changing chemistry.
Trade-offs
- Extreme moisture sensitivity requires inert glovebox handling: LPSCl hydrolyzes on contact with water to release H2S; storage and handling must be performed exclusively in an Ar or N2 glovebox with dew point below –40°C to prevent degradation.
- Conductivity decreases with smaller particle size: Ionic conductivity drops from >4.0 mS/cm (>5.0 µm) to >2.0 mS/cm (<1.0 µm), meaning fine grades optimized for cathode mixing inherently sacrifice some electrolyte transport performance.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
