Sodium Iron Pyrophosphate Phosphate (Na₄Fe₃(PO₄)₂P₂O₇), commonly abbreviated as NFPP, is an advanced polyanionic cathode material widely used in sodium-ion batteries (SIBs) and next-generation electrochemical energy storage systems. Featuring a robust mixed phosphate-pyrophosphate framework, NFPP offers excellent structural stability, high safety, long cycle life, and favorable rate capability.
VIMATERIAL offers high-quality NFPP powders with customizable specifications, including particle size distribution, tap density, morphology, carbon coating options, and surface characteristics. Contact us for more information.
Formula: Na₄Fe₃(PO₄)₂P₂O₇
Appearance: Typically gray to dark gray powder.
Crystal Structure: Mixed phosphate-pyrophosphate polyanionic framework with stable three-dimensional sodium-ion diffusion channels.
Density: ~3.0–3.3 g/cm³.
Theoretical Capacity: ~129 mAh/g.
Operating Voltage: Approximately 3.0–3.2 V vs. Na⁺/Na.
Voltage Plateau: Around 3.1 V, providing a good balance between energy density and long-term cycling stability.
Cathode Material for Sodium-Ion Batteries: Na₄Fe₃(PO₄)₂P₂O₇ is widely used as a cathode material for sodium-ion batteries due to its stable phosphate-pyrophosphate framework, favorable operating voltage, and excellent cycling performance. Its open sodium-ion diffusion channels facilitate efficient Na⁺ transport, enabling reliable charge-discharge operation and long-term electrochemical stability.
Grid-Scale Energy Storage Systems: Owing to its outstanding safety, long cycle life, and cost-effective iron-based composition, NFPP is particularly suitable for stationary energy storage applications, including renewable energy integration, grid energy storage, peak shaving, frequency regulation, and backup power systems where durability and operational safety are critical.
Long-Life and High-Safety Sodium-Ion Batteries: The robust polyanionic framework of NFPP undergoes minimal structural change during repeated sodium-ion insertion and extraction, making it an ideal cathode material for sodium-ion batteries requiring extended service life, high reliability, and enhanced thermal stability.
Sustainable and Cost-Effective Energy Storage Devices: As a cobalt-free and nickel-free cathode material composed of earth-abundant elements, it offers an environmentally friendly and economically attractive solution for next-generation sodium-ion batteries and advanced electrochemical energy storage systems that demand both sustainability and scalable manufacturing.
Abundant and low-cost elements: Iron-based composition reduces raw material costs.
Excellent cycling stability: Stable phosphate-pyrophosphate framework maintains structural integrity during repeated sodium-ion insertion/extraction.
Good rate capability: Efficient sodium-ion transport pathways support practical charge and discharge rates.
Superior safety: Excellent thermal and chemical stability compared with many conventional cathode materials.
Environmentally friendly: Cobalt-free and nickel-free composition with reduced environmental impact.
Long service life: Suitable for large-scale and long-duration energy storage applications.
Handling: As a fine powder, appropriate personal protective equipment (PPE), including gloves, safety glasses, and dust protection, should be used to minimize exposure to airborne particles.
Storage: Store in a cool, dry environment away from moisture, heat sources, and contaminants. Keep containers tightly sealed to preserve material quality and maintain electrochemical performance during long-term storage.
Q1: What is Sodium Iron Pyrophosphate Phosphate?
A: NFPP is an advanced iron-based polyanionic cathode material for sodium-ion batteries. It features a stable phosphate-pyrophosphate framework that provides excellent safety, long cycle life, and reliable electrochemical performance.
Q2: What are the main advantages of NFPP compared with other sodium-ion cathode materials?
A: NFPP offers several advantages, including low material cost, abundant raw materials, excellent thermal stability, long cycling life, and an environmentally friendly composition free of cobalt and nickel.
Q3: What are the primary applications of NFPP?
A: It is primarily used as a cathode material for sodium-ion batteries in grid-scale energy storage systems, renewable energy storage, backup power systems, and other applications requiring long cycle life and high operational safety.
Q4: Can it be customized for specific battery applications?
A: Yes. NFPP powders can be customized according to customer requirements, including particle size distribution, tap density, morphology, carbon coating, and other physical and electrochemical properties.
VI HALBLEITERMATERIAL GmbH (VIMATERIAL) employs a stringent quality assurance system to ensure the reliability of our product quality. Strict quality control is implemented throughout the entire production chain, and for defective products, we strictly enforce the principle of rework and redo. Each batch is released only after passing detailed specification tests.
Every batch of our materials is independently tested, and, if necessary, we send samples to certified companies for testing. We provide these documents and analysis certificates with the shipment to certify that our products meet the required standards.
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