2.3 Sodium Iron Pyrophosphate NFPP Sodium Ion Battery Cathode Material

High-pressure Compaction 2.3 Sodium Iron Pyrophosphate NFPP Sodium Ion Battery Cathode Material Solid-state Sodium Battery

Product Overview​​

High-tap-density (2.3 g/cm³) Na₄Fe₃(PO₄)₂P₂O₇ (NFPP) is an advanced polyanionic cathode material for solid-state sodium-ion batteries, offering exceptional structural stability, high volumetric energy density, and ultra-long cycle life (>4,000 cycles). Its unique 3D open-framework architecture enables efficient Na⁺ diffusion, making it ideal for high-performance solid-state batteries in grid storage and EV applications.

Key Specifications​​

Material Advantages​​

1. ​​High Volumetric Energy Density​​

   • Ultra-high tap density (2.3 g/cm³) enables compact electrode design, critical for solid-state batteries.
   • Theoretical capacity: 129 mAh/g (3 Na⁺ intercalation).

2. ​​Solid-State Compatibility​​

   • Minimal volume change (<4%) during cycling, reducing interfacial stress with solid electrolytes.
   • Stable with sulfide/oxide solid electrolytes (e.g., Na₃PS₄, Na₃Zr₂Si₂PO₁₂).

3. ​​Cost-Effectiveness​​

   • Raw material cost: ~$1.3k/ton(vs.$3.5k/ton for layered oxides).
   • Low sintering temperature (550–650°C vs. 900°C for oxides).

      

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   • Safety & Environmental Benefits​.​

   • Non-toxic, non-flammable, and free of critical metals (Co, Ni).
      

Applications​​

• ​​Solid-State Sodium Batteries​​: Grid-scale storage, EV power packs.
• ​​Low-Temperature Operations​​: Stable performance at -20°C.
• ​​High-Safety Systems​​: Aerospace, medical devices.

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NFPP sodium ion battery cathode material

2.3 Sodium Iron Pyrophosphate NFPP Sodium Ion Battery Cathode Material Images