|
| MOQ: | 20g |
| Price: | 1-1000USD/Negotiable |
| standard packaging: | Plastic box |
| Delivery period: | 5-8 work days |
| payment method: | T/T |
Sodium iron phosphophosphate (NaFePO₄F), often referred to as NFPP, is a novel cathode material for sodium-ion batteries. It offers several advantages, particularly in terms of cost-effectiveness and resource sustainability, making it a focal point of research in the field of sodium-ion batteries.
NFPP is a cathode material based on iron and phosphorus compounds. It provides a relatively high theoretical specific capacity, typically around 120-130 mAh/g, which is comparable to some lithium-based cathode materials.
NFPP typically crystallizes in the olivine structure, similar to lithium iron phosphate (LFP). The synthesis of NFPP involves high-temperature solid-state reactions or sol-gel methods, often using precursors such as iron salts, phosphoric acid, and sodium salts.
NFPP is being explored for various sodium-ion battery applications, including:
Ongoing research aims to improve the performance of NFPP through structural modifications, doping, and optimization of synthesis processes. Enhancements in energy density, rate capability, and cycle life are key areas of focus to make NFPP a mainstream material for sodium-ion batteries.
In summary, NFPP represents a promising alternative to lithium-based cathodes, offering a balance of performance, cost, and sustainability for various energy storage applications.
| Test Item/Parameter | Unit | Specification | Test Result |
| Physical Indicators | |||
| Appearance | / | Gray-black powder, uniform color, no hard lumps | Gray-black powder, uniform color, no hard lumps |
| Particle Size Distribution D10 | μm | ≥0.4 | 0.576 |
| Particle Size Distribution D50 | μm | 2.5±0.5 | 2.255 |
| Particle Size Distribution D90 | μm | ≤8.5 | 6.502 |
| Particle Size Distribution D100 | μm | ≤22 | 13.360 |
| Compaction Density | g/cm³ | 1.9±0.1 | 1.89 |
| Specific Surface Area | m²/g | 18±3 | 18.214 |
| pH Value | / | 10±1 | 10.34 |
| Moisture | ppm | ≤1000 | 780 |
| Chemical Indicators | |||
| Main Element Content | Na | % | 14.9±0.5 |
| Fe | % | 24.2±0.5 | |
| P | % | 20.1±0.5 | |
| C | % | 2.5±0.5 | |
| Impurity Element Content | Cr | ppm | ≤50 |
| Zn | ppm | ≤50 | |
| Cu | ppm | ≤10 | |
| Ni | ppm | ≤50 | |
| Mn | ppm | ≤200 | |
| Mg | ppm | ≤100 | |
| Magnetic Substance Content | ppm | ≤1000 | 675 |
| **Half-Cell Data (1.5-4.0V)** | |||
| 0.1C Capacity | mAh/g | ≥95 | 99.99 |
| 1C Capacity | mAh/g | ≥95 | 95.54 |
| 5C Capacity | mAh/g | ≥90 | 93.35 |
| First Cycle Efficiency | % | 100±5 | 100.56 |
| Average Voltage | V | ≥2.8 | 2.89 |
| 100C Capacity Retention | % | ≥95 | 96.72 |
| 1 | Specific Capacity | mAh/g | 116 | 110 | ≥120 | ≥110* | Button cell, 4.25V-1.75V, 0.1C |
| 2 | First Charge Efficiency | % | 86.2 | 89.9 | ≥92 | ≥90* | Button cell, 0.1C first charge discharge efficiency not less than 90% |
| 3 | Voltage Platform (during discharge) | V | 3.02 | 3.03 | ≥3.0 | ≥3.4* | Button cell, 0.1C first discharge voltage not less than 3.0V |
| 4 | Rate Performance | % | 89.9 | 91.6 | ≥92 | ≥92* | Button cell, IC discharge ratio capacity not less than 0.1C discharge ratio capacity of 92% |
| 5 | High Rate Performance | % | 80 | 81.2 | ≥85 | ≥85* | Button cell, discharge ratio capacity not less than 0.1C discharge ratio capacity of 85% |
| 6 | Cycle Performance | % | 97.6 | 97.1 | ≥98 | ≥92* | Button cell, IC charge-discharge cycle 200 times after discharge ratio capacity not less than first discharge ratio capacity of 92% |
|
|
| MOQ: | 20g |
| Price: | 1-1000USD/Negotiable |
| standard packaging: | Plastic box |
| Delivery period: | 5-8 work days |
| payment method: | T/T |
Sodium iron phosphophosphate (NaFePO₄F), often referred to as NFPP, is a novel cathode material for sodium-ion batteries. It offers several advantages, particularly in terms of cost-effectiveness and resource sustainability, making it a focal point of research in the field of sodium-ion batteries.
NFPP is a cathode material based on iron and phosphorus compounds. It provides a relatively high theoretical specific capacity, typically around 120-130 mAh/g, which is comparable to some lithium-based cathode materials.
NFPP typically crystallizes in the olivine structure, similar to lithium iron phosphate (LFP). The synthesis of NFPP involves high-temperature solid-state reactions or sol-gel methods, often using precursors such as iron salts, phosphoric acid, and sodium salts.
NFPP is being explored for various sodium-ion battery applications, including:
Ongoing research aims to improve the performance of NFPP through structural modifications, doping, and optimization of synthesis processes. Enhancements in energy density, rate capability, and cycle life are key areas of focus to make NFPP a mainstream material for sodium-ion batteries.
In summary, NFPP represents a promising alternative to lithium-based cathodes, offering a balance of performance, cost, and sustainability for various energy storage applications.
| Test Item/Parameter | Unit | Specification | Test Result |
| Physical Indicators | |||
| Appearance | / | Gray-black powder, uniform color, no hard lumps | Gray-black powder, uniform color, no hard lumps |
| Particle Size Distribution D10 | μm | ≥0.4 | 0.576 |
| Particle Size Distribution D50 | μm | 2.5±0.5 | 2.255 |
| Particle Size Distribution D90 | μm | ≤8.5 | 6.502 |
| Particle Size Distribution D100 | μm | ≤22 | 13.360 |
| Compaction Density | g/cm³ | 1.9±0.1 | 1.89 |
| Specific Surface Area | m²/g | 18±3 | 18.214 |
| pH Value | / | 10±1 | 10.34 |
| Moisture | ppm | ≤1000 | 780 |
| Chemical Indicators | |||
| Main Element Content | Na | % | 14.9±0.5 |
| Fe | % | 24.2±0.5 | |
| P | % | 20.1±0.5 | |
| C | % | 2.5±0.5 | |
| Impurity Element Content | Cr | ppm | ≤50 |
| Zn | ppm | ≤50 | |
| Cu | ppm | ≤10 | |
| Ni | ppm | ≤50 | |
| Mn | ppm | ≤200 | |
| Mg | ppm | ≤100 | |
| Magnetic Substance Content | ppm | ≤1000 | 675 |
| **Half-Cell Data (1.5-4.0V)** | |||
| 0.1C Capacity | mAh/g | ≥95 | 99.99 |
| 1C Capacity | mAh/g | ≥95 | 95.54 |
| 5C Capacity | mAh/g | ≥90 | 93.35 |
| First Cycle Efficiency | % | 100±5 | 100.56 |
| Average Voltage | V | ≥2.8 | 2.89 |
| 100C Capacity Retention | % | ≥95 | 96.72 |
| 1 | Specific Capacity | mAh/g | 116 | 110 | ≥120 | ≥110* | Button cell, 4.25V-1.75V, 0.1C |
| 2 | First Charge Efficiency | % | 86.2 | 89.9 | ≥92 | ≥90* | Button cell, 0.1C first charge discharge efficiency not less than 90% |
| 3 | Voltage Platform (during discharge) | V | 3.02 | 3.03 | ≥3.0 | ≥3.4* | Button cell, 0.1C first discharge voltage not less than 3.0V |
| 4 | Rate Performance | % | 89.9 | 91.6 | ≥92 | ≥92* | Button cell, IC discharge ratio capacity not less than 0.1C discharge ratio capacity of 92% |
| 5 | High Rate Performance | % | 80 | 81.2 | ≥85 | ≥85* | Button cell, discharge ratio capacity not less than 0.1C discharge ratio capacity of 85% |
| 6 | Cycle Performance | % | 97.6 | 97.1 | ≥98 | ≥92* | Button cell, IC charge-discharge cycle 200 times after discharge ratio capacity not less than first discharge ratio capacity of 92% |
