Description
Atomfair Silicon Composite Powder AF-SC-R01H-1350
1. Basic Product Information
| Item | Details |
|---|---|
| Product Model | AF-SC-R01H-1350 |
2. Physical & Chemical Performance Test Details
This inspection covers four core dimensions: appearance, particle size distribution, physical properties, and electrochemical performance. The measured results of each index are as follows:
| Test Category | Technical Index | Unit | Measured Value | Test Equipment |
|---|---|---|---|---|
| Appearance Inspection | Appearance | / | Black Powder | Visual Inspection |
| Particle Size Distribution | D10 | μm | 5.208 | Laser Particle Size Analyzer (Mastersizer 3000) |
| D50 | μm | 7.914 | Laser Particle Size Analyzer (Mastersizer 3000) | |
| D90 | μm | 12.366 | Laser Particle Size Analyzer (Mastersizer 3000) | |
| Span (Distribution Width) | / | 0.90 | / | |
| Physical Properties | Compacted Powder Resistivity (20MPa) | Ω·cm | 0.64 | Powder Resistivity & Compacted Density Tester (PRCN-3100) |
| Compacted Density (20MPa) | g/cm³ | 1.01 | Powder Resistivity & Compacted Density Tester (PRCN-3100) | |
| Tap Density | g/cm³ | 1.02 | Tap Density Tester (BT-312) | |
| Specific Surface Area | m²/g | 2.01 | Specific Surface Area & Porosity Analyzer (Tristar II Plus 3030) | |
| Electrochemical Performance | Reversible Capacity (2V) | mAh/g | 1564 | LAND Battery Test System (CT3002A) |
| First Efficiency (2V) | % | 93.94 | LAND Battery Test System (CT3002A) | |
| Reversible Capacity (0.8V) | mAh/g | 1352 | LAND Battery Test System (CT3002A) | |
| Efficiency (0.8V) | % | 81.21 | LAND Battery Test System (CT3002A) |
3. Professional Interpretation of Core Indicators
3.1 Particle Size Distribution Characteristics
- D10/D50/D90: These values represent that 10%, 50%, and 90% of the particles in the sample have a diameter smaller than the corresponding value, respectively. The median diameter D50 = 7.914μm is the core particle size parameter of the powder.
- Span Value: It is used to quantify the uniformity of particle size distribution. The measured value of 0.90 indicates a narrow distribution, meaning the powder particles are uniform with excellent consistency, which is beneficial to the stability of subsequent processing technology.
3.2 Physical Processing Performance
- Compacted / Tap Density: The compacted density at 20MPa is 1.01g/cm³, and the tap density is 1.02g/cm³. The close values of the two indicators show that the powder has good fluidity and excellent fillability, which can improve the energy density of the electrode sheet.
- Resistivity: The compacted resistivity at 20MPa is 0.64Ω·cm, a low value indicating good electrical conductivity of the powder, which can reduce the internal resistance of the battery and improve the rate performance.
- Specific Surface Area: 2.01m²/g, which is in a reasonable range. It not only ensures the wettability of the electrolyte but also avoids the increase of side reactions caused by excessive specific surface area, balancing the cycle life and first efficiency of the battery.
3.3 Core Electrochemical Performance
- 2V System Performance: Reversible capacity of 1564mAh/g and first efficiency of 93.94%. This combination of high capacity and high first efficiency meets the core requirements of high energy density batteries, effectively improving the overall capacity and energy utilization rate of the battery.
- 0.8V System Performance: Reversible capacity of 1352mAh/g and efficiency of 81.21%, which meets the product performance standards under the corresponding voltage window and is suitable for application in specific scenarios.
4. Comprehensive Conclusion
All test indicators of the submitted AF-SC-R01H-1350 product meet the product technical requirements. The powder has uniform particle size, excellent physical processing performance, and up-to-standard electrochemical performance. It is a qualified product and can be used for subsequent production and application.
