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Sulfide-based Electrolytes
Solid Electrolytes for Lithium-ion Batteries
Sulfide-based solid electrolytes are one of the most highly sought and have emerged as a leading contender in the quest for safer and higher-performance solid-state batteries. NEI Corporation, a trusted manufacturer of sulfide-based solid electrolytes, is at the forefront of the transition to solid-state batteries. Our advanced materials provide the foundation for a new era of energy storage technology. Some key advantages of sulfide-based solid electrolytes include:
- High Ionic Conductivity – contributing to faster charge-discharge rates
- Wide Electrochemical Window – enabling compatibility with high-voltage cathode materials
- Potential for High Energy Density – contributing to increased battery capacity
Although it is important to note that these materials are air and moisture sensitve, the potential benefits of sulfide-based solid electrolytes make them a promising avenue for next-generation battery technologies.
Available Sulfide Compositions
Sulfide compounds with high Li-ion conductivity are not commonly available, and so the development of solid state electrolyte-based Li-ion batteries has been plagued by the lack of widespread availability of these difficult-to-produce materials. NEI has leveraged its expertise in advanced materials synthesis to develop a proprietary process for producing sulfide materials in a form suitable for lithium-ion battery applications. This capability positions NEI as a potential partner for researchers and manufacturers seeking to advance solid-state battery technology.
NEI’s sulfide-based electrolytes are available in quantities of 10g, 25g, 50g, 100g, 250g, 500g, and 1kg+. Browse our selection of materials below and request a quote today.
“LPSCl” – Lithium Phosphorous Sulfur Chloride
– Chemical Formula: Li6PS5Cl
– Crystal Structure: Argyrodite
– CAS Number: 1015037-41-8
– Particle Size: 5 µm (approximated)
– Minimum Quantity: 10 grams
“Fine LPSCl” – Lithium Phosphorous Sulfur Chloride
– Chemical Formula: Li6PS5Cl
– Crystal Structure: Argyrodite
– CAS Number: 1015037-41-8
– Particle Size: 1 µm (approximated)
– Minimum Quantity: 10 grams
“Cl-rich LPSCl” – Lithium Phosphorus Sulfide Chloride
– Chemical Formula: Li5.5PS4.5Cl1.5
– Crystal Structure: Argyrodite
– CAS Number: 1646795-48-3
– Particle Size: 5 µm (approximated)
– Minimum Quantity: 10 grams
“LSPS” – Lithium Tin Phosphorus Sulfide
– Chemical Formula: Li10SnP2S12
– Crystal Structure: Tetragonal
– CAS Number: Unassigned
– Particle Size: 8 µm (approximated)
– Minimum Quantity: 10 grams
“LPS” – β-phase Lithium Phosphorus Sulfide
– Chemical Formula: β-Li3PS4
– Crystal Structure: Orthorhombic
– CAS Number: 82857-67-8
– Particle Size: 5 µm (approximated)
– Minimum Quantity: 10 grams
“LPSClI” – Lithium Phosphorus Sulfur Chloride Iodide
– Chemical Formula: Li6PS5Cl0.9I0.1
– Crystal Structure: Argyrodite
– CAS Number: 122752-19-1
– Particle Size: 5 µm (approximated)
– Minimum Quantity: 10 grams
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Updated July 1, 2026