Air-Stable Prussian White (Na₂Fe[Fe(CN)₆]) Cathode Powder for Sodium-Ion Batteries
Key Specifications:
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Chemical Formula: Na<sub>1.92</sub>Fe[Fe(CN)<sub>6</sub>]·0.6H<sub>2</sub>O
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Capacity: 155-160 mAh/g (0.1C, 2.0-4.0V vs. Na+/Na)
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Average Voltage: 3.2 V
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Purity: ≥99.9% (ICP-MS)
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Tap Density: 1.8-2.0 g/cm³
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Particle Size: D50 5-8 μm (adjustable)
Advanced Features:
✓ Patented Oxygen-Free Synthesis – <0.5% Fe(CN)₆ vacancies vs. 3-5% in conventional Prussian White
✓ Carbon Nano-Coating – 5nm layer improves conductivity to 10⁻³ S/cm
✓ Phase Stability – ≤1% lattice distortion after 100 cycles (in-situ XRD verified)
Applications:
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Stationary energy storage (ESS)
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Low-cost EV batteries
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Aqueous sodium-ion systems
