Materials / grade-specific review
Sodium-Ion Electrolyte (NaPF6)
1.0 M NaPF6 in EC/DEC with 5% FEC, matched to hard-carbon anodes and layered-oxide or Prussian-blue cathodes.
APPLICATION & GRADE
Grade / designation: SZ-M1-EL03
Grade and specification to be confirmed
Discuss Material Requirements ↗Typical applications
Hard-carbon / layered-oxide sodium cells
Prussian-blue analogue cathode work
Sodium-ion coin-cell assembly
Low-temperature sodium storage studies
Grade & supply review
Salt and concentration — LiPF6, LiFSI, NaPF6 or a blend
Solvent ratio and co-solvent selection
Additive package (VC, FEC, LiDFOB, PS, aluminium passivator)
Water and HF limits, volume, and septum-vial packing
Representative image. Actual material appearance varies by grade and lot — request a current photograph or sample.
About this material
Sodium-ion cells cannot use the lithium formulation: NaPF6 has different solubility, and the SEI on hard carbon needs a higher fluoroethylene carbonate content to stay stable. This blend uses EC/DEC at 1:1 with 5% FEC, which gives 6–8 mS/cm and a stable interface on hard carbon.
Sodium salts are more hygroscopic than lithium salts, so the water specification matters more here, not less. Keep the electrolyte below 20 ppm and the assembled cell will show the flat first-cycle efficiency that hard-carbon half cells are supposed to show.
Documentation, controls and care
Quality controls
- Certificate of analysis per batch
- Moisture by Karl Fischer, reported per lot
- Trace metal screening
- Retained samples held for 12 months
Handling & storage
- Store sealed under dry air or argon, away from light and ignition sources.
- Hygroscopic — dispense into a septum vial rather than reopening the stock bottle.
- Wear nitrile gloves, eye protection and a lab coat; consult the SDS before handling.
Grades on this page are references used to describe capability; they are not a fixed product list.
Specification values are typical windows compiled from public technical references and supplier
datasheets, and are provided for selection guidance only. The specification delivered against your
order is agreed in writing, and measured values are confirmed on the batch certificate of analysis.
Materials listed here may be hazardous; they must be handled by qualified personnel under applicable
regulations.
Material specifications
| Composition | 1.0 M NaPF6 in EC/DEC (1:1 by volume) |
|---|---|
| Additive | 5 wt% fluoroethylene carbonate (FEC) |
| Conductivity | 6–8 mS/cm at 25 °C |
| Water content | ≤20 ppm (Karl Fischer) |
| Free HF | ≤50 ppm |
| Oxidation stability | >4.2 V vs Na/Na⁺ |
| Density | 1.15–1.22 g/cm³ at 25 °C |
| Colour | ≤50 APHA, clear |
| Operating window | −20 to 55 °C |
| Pack sizes | 50 mL / 250 mL / 1 L |
Grade & packaging options
Custom particle size or purity windows
Pilot and production quantities
Technical review call with our materials team
Supply boundaries
Reference grade, not a fixed catalogue item. Capacity, particle size, coating, purity and packaging are set to the specification your process needs — the delivered grade may differ from the values shown here.
Packaging & handling
Laboratory pack | 50 mL / 250 mL septum bottle
Pilot pack | 1 L / 5 L nitrogen-capped container
Production pack | 20 L drum, argon blanket
Information for material review
Cell chemistry, format and voltage window
Target capacity, areal loading or formulation
Process route — NMP/PVDF, aqueous, or dry
Quantity per lot, packing and delivery schedule
Training in China
Training at our China facility is available for this product. Scope, schedule and language are agreed for each project.
Related products
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