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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.
Select a tab below to learn more about each of our sulfide solid electrolyte materials, including links to our technical and safety data sheets, review ordering information, or request a quote.
Sulfide-based Electrolytes
Sulfide-based Electrolyte Materials
All of our sulfide solid electrolyte materials are offered in powder form and available in ready-to-ship quantities of 10 grams, 25 grams, 50 grams, 100 grams, 250 grams, 500 grams, and 1 kilogram. Larger bulk quantities are also available (upon request).
Click on the Product Names below to open the product page and learn more about each product (more product pages coming soon).
| Product Name | Product Description | Formula | Safety Data Sheet | Specification Sheet |
| NANOMYTE® SSE-10 » | “LSPS” – Lithium Tin Phosphorus Sulfide | Li10SnP2S12 | SDS (pdf) » | Specs (pdf) » |
| LPS | Lithium Phosphorus Sulfide (~5 µm) | β-Li3PS4 | SDS (pdf) » | (Request) |
| LPSCl | Lithium Phosphorus Sulfide Chloride (~5 µm) | Li6PS5Cl | SDS (pdf) » | Specs (pdf) » |
| Fine LPSCl | Lithium Phosphorus Sulfide Chloride (~1 µm) | Li6PS5Cl | SDS (pdf) » | Specs (pdf) » |
| LPSClI | Lithium Phosphorus Sulfide Chloride Iodide (~5 µm) | Li6PS5Cl0.9I0.1 | SDS (pdf) » | (Request) |
| Cl-rich LPSCl | Chloride-rich Lithium Phosphorus Sulfide Chloride (~5 µm) | Li5.5PS4.5Cl1.5 | SDS (pdf) » | Specs (pdf) » |
*Particle sizes for our sulfides are approximate, but cannot be confirmed for any particular lot.
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Page updated March 19, 2026