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).

Inquiry Cart 0