Charge-Discharge Data:

• Initial Coulombic Efficiency: ≥ 85%

• Specific Capacity:

  • Initial Discharge Capacity: 120-130 mAh/g

  • Capacity Retention: ≥ 90% after 100 cycles

• Charge/Discharge Rate Capability:

  • At 0.1C: 125-130 mAh/g

  • At 1C: 100-110 mAh/g

  • At 5C: 70-80 mAh/g

• Cycling Stability: Less than 5% capacity fade over 100 cycles at 0.5C

• Voltage Window: 2.5V to 4.0V (vs. Na/Na⁺)

Additional Data:

• XRD Patterns: Confirm the NASICON structure with distinct peaks.

• SEM: Reveals uniform particle size and morphology.

• EIS: Low impedance indicating efficient charge transfer.

Specifications:

• Appearance: Black powder

• Composition: Sodium Vanadium Phosphate [Na₃V₂(PO₄)₃]

• Particle Sizes:

  • D10: 13 +/-1 µm

  • D50: 20 +/-1 µm

  • D90: 35 +/-1 µm

• TAP Density:  0.95 g/cm³

• Carbon Content: 3%

• pH: 8

• First Discharge Capacity at 10C: ≥105 mAh/g