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Battery Powder Compaction Density Measurement System
SKU: IE0010
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MSE Supplies offers a Battery Powder Compaction Density Measurement System. The system is integrated with pressure application and thickness measurement modules. It can be set up to different modes, including single point, variable pressure, pressurization, and pressure relief, etc. These modes allow users to perform long-term stability evaluation and various material analysis and to acquire necessary information for R&D material evaluation and process optimization.
Importance of Powder Compaction Density
The compaction density of the powder is related to its particle size and distribution. It strongly affects the capacity, internal resistance and the cycling performance of lithium ion batteries. Theoretically speaking, the higher the compaction density, the higher the capacity of the lithium ion batteries can be, which is often used as one of the indicators in evaluating the energy density of the materials. The compaction density is also related to the intercalation and deintercalation of lithium ions occurred during the cycling. With appropriate compaction density, the capacity of lithium ion batteries can be increased, reducing internal resistance and polarization loss. The measurement of powder compaction density can be used as an effective parameter to monitor the differences between different batches of powder materials, which is essential to R&D material evaluation and process optimization.
Features:
- Integrated design with pressure application and thickness measurement modules
- Fully automatic measurement software system
- Various testing modes (single point, variable pressure, pressurization, and pressure relief, performance of the powder materials, etc.)
- Equipped with machine inspection standard parts, preprocessing equipment and automatic demoulding equipment
Testing Steps:
1. Evaluate the compaction density of positive and negative electrode powders and conductive materials of lithium-ion batteries
2. Monitor the long-term stability of the compaction density of the material
3. Evaluate the material stress-strain performance based on the result
4. Evaluate of material compression rebound performance based on the result
Technical Specifications:
| Parameter | 1000 Series | 5000 Series |
| SKU | IE0001 | IE0002 |
| Max force | 1T | 5T |
| Dimension, W×D×H (mm) | 330 x 402 x 780 | 370 x 565 x 1200 |
| Pressure Accuracy (%) | ± 0.3 F.S | |
| Thickness Range (mm) | 0 ~ 8 | |
| Thickness Accuracy (μm) | ± 10 | |
| Thickness Resolution (μm) | 0.5 | |
| Max Filling Capacity (mm) | φ13 x 8 | |
| Supply Voltage (V) | 220 / 110 (Optional) | |
| Power Consumption (W) | 450 | 2100 |
| Environmental Temperature (°C) | 10 ~ 35 | |
| Environmental Humidity at 40°C | < 80%RH | |
| Weight (kg) | 85 | 250 |
Examples:
1. Long-term Stability Evaluation of Nickel Cobalt Manganese Materials
Test mode: Multipoint Mode
Test Condition: 12MPa, 180MPa, hold pressure for 10s, a total of 30 days of testing.
Result: The above graphs show the compaction density in 30 days are all less than ±3σ, and the long-term stability of the compaction density of this sample is good.
2. Lithium Iron Phosphate Material Evaluation
Test mode: Variable Pressure Mode
Test Condition: 10-200MPa, sampling points at an interval of 20MPa, holding pressure for 10s, a total of 5 groups of tests.
Result: The above graphs show the compaction density of 5 groups under each pressure is less than 0.5%, and the data fluctuation range is less than 0.05g/cm3, indicating the repeatability of this equipment is good.
3. Lithium Cobalt Oxide Material Evaluation
Test mode: Steady State Mode
Test Condition: 10-200MPa, sampling points at intervals of 20MPa, holding pressure for 10s, and tested 4 samples in total.
Result: The above graphs show that the stress-strain curves of the four lithium cobalt oxide materials are different during the compression process, and the compression properties of the materials can be further evaluated in combination with the material particle size distribution.
4. Graphite and Carbon Material Evaluation
Test mode: Pressure Relief Mode
Parameters: 10-200MPa, sampling points at intervals of 20MPa, hold pressure for 10s, release pressure to 3MPa, hold pressure for 10s, test 4 samples in total.
Result: The above graphs show that the thickness rebound of graphite and carbon materials during the process of pressurization and decompression are different, and the rebound of graphite material is greater than hard carbon.