High Capacity Prussian White Cathode Material For Sodium Ion Batteries
Packaging:Sealed container
Appearance:Light gray-white powder, free of impurities, agglomeration, or large particles
SEM:3,000× magnification
Tap Density (g/cm³):0.6
Specific Surface Area (m²/g):25
Na Content (%):27±1%
Fe+Mn Content (%):55±1%
Specific Capacity (mAh/g):158
MOQ: 10g
Leading time: 5-7 working days
High-Capacity Prussian White (NaₓFe[Fe(CN)₆]) Cathode Material for Sodium-Ion Batteries
1. Introduction
Prussian White (PW, NaₓFe[Fe(CN)₆]) is a low-cost, high-capacity cathode material for sodium-ion batteries (SIBs). As a derivative of Prussian blue analogs (PBAs), it leverages an open framework structure with fast Na⁺ diffusion and excellent structural stability, making it ideal for large-scale energy storage systems.
2. Key Features
- Chemical Formula: NaₓFe[Fe(CN)₆] (typically 1.6 ≤ x ≤ 2.0 for full Na⁺ insertion)
- Crystal System: Cubic (Fm-3m space group)
- Framework: Open 3D channels enable rapid Na⁺ migration (10⁻¹⁰–10⁻¹¹ cm²/s diffusion coefficient).
3. Technical Specifications & Test Data
| No. | Item | Requirement | Test Method | Result |
|---|---|---|---|---|
| 1 | Packaging | Sealed container | Visual inspection | Compliant |
| 2 | Appearance | Light gray-white powder, free of impurities, agglomeration, or large particles | Visual inspection | Compliant |
| 3 | D10 (μm) | 0.39 | Laser particle analyzer | Compliant |
| 4 | D50 (μm) | 0.80 | Laser particle analyzer | Compliant |
| 5 | D90 (μm) | 1.6 | Laser particle analyzer | Compliant |
| 6 | Tap Density (g/cm³) | 0.6 | Tap density tester | 0.8 |
| 7 | Specific Surface Area (m²/g) | 6.25 | BET nitrogen adsorption | 6.41 |
| 8 | Na Content (%) | 27±1% | ICP-OES | 27.7% |
| 9 | Fe+Mn Content (%) | 55±1% | ICP-OES | 55.2% |
| 11 | Specific Capacity (mAh/g) | 158 | Coin cell half-cell test | 145 |
| 12 | SEM | 3,000× magnification | Provided during R&D phase | Compliant |
4. Material Advantages
✅ Ultra-Low Cost: Iron/cyanide-based precursors reduce raw material expenses by ~60% vs. layered oxides.
✅ High Safety: Strong Fe-C≡N bonds suppress thermal runaway risks.
✅ Scalable Synthesis: Simple co-precipitation process (room temperature, aqueous solutions).