MSE PRO Sodium Iron Phosphate (NaFePO₄) Powder for Sodium Ion Battery Cathode, 50g

MSE PRO™ Sodium Iron Phosphate (NaFePO₄) Powder for Sodium Ion Battery Cathode 

Sodium-ion batteries (SIBs) have been recognized as one of the most potential technologies for low-cost rechargeable batteries due to the abundant resource of sodium from ocean or iron sand. SIBs possess a similar cell configuration and working mechanism for energy storage with lithium-ion batteries (LIBs). However, sodium ion (Na⁺) intercalation and storage, owing to larger ionic radius of 1.02 Å and heavier weight of 22.99 g.mol⁻¹ compared with Li⁺ (0.76 Å & 6.94 g.mol⁻¹), are more challenging than LIBs.

Phosphate-based electrodes have been considered as promising SIB cathode materials. Maricite sodium iron phosphate has a stable structure of open-framework with long charge-discharge cycle life and high theoretical capacity (155 mAhg⁻¹). When being charged, the iron is partially oxidized to the +3 state, with some sodium ions moving to the electrolyte, resulting in a range of compounds Na_xFePO₄ with 0.5<x<1. 

The NaFePO₄ powders are covered with 3 wt% carbon to improve the electrical conductivity and electrolyte wetting.

More SIB cathode materials such as Sodium Manganese Phosphate (NaMnPO₄) and Sodium manganese oxide (Na_0.44MnO₂) are also available from MSE Supplies LLC, please contact us. 

Product Number (SKU): PO0220

Package Size: 50g/bottle

Specifications:

• Chemical Name: Sodium Iron Phosphate
• Appearance: Dark grey powder
• Molecular Formula: NaFePO₄ (NFP)
• Particle Size: ≤ 3 µm
• Purity: ≥ 99.9% 
• Structure: Orthorhombic (Maricite)
• Chemical Composition: NaFePO₄ (97 wt%), Carbon (3 wt%)
• This is a material for research use. Other information might be limited. 

Other Impurity Content (Max. ppm)

References:

1. "Achieving highly electrochemically active maricite NaFePO4 with ultrafine NaFePO4@C subunits for high rate and low temperature sodium-ion batteries." Chemical Engineering Journal, 2021, 405: 126689.

2. "Carbon encapsulated maricite NaFePO4 nanoparticles as cathode material for sodium-ion batteries." Colloids and Surfaces A: Physicochemical and Engineering Aspects 583 (2019): 123957.

3. "Self-Standing, Collector-Free Maricite NaFePO4/Carbon Nanofiber Cathode Endowed with Increasing Electrochemical Activity." Energy & Fuels 35.22 (2021): 18768-18777.

4. "Remarkable enhancement in the electrochemical activity of maricite NaFePO4 on high-surface-area carbon cloth for sodium-ion batteries." Carbon 146 (2019): 78-87.