Products Description
1) 0.5%~2% of CNT can be added to the negative electrode formula, which helps improve cycling performance
2) The amount of electrolyte additive is increased compared to that used in graphite negative electrode electrolyte additive, which contributes to improving the poor SEI film of silicon negative electrode
3) Use special adhesive for silicon-carbon materials (such as PAA series adhesive) to effectively improve the electrochemical performance of the materials (such as cycling performance, etc.)
Features: Ultra-high capacity.
Applicable scope: High-capacity batteries (especially suitable for cylindrical batteries).
Application fields: 3C special field.
Technical Parameters
Specification | |
D50 (um) | 7.4 |
BET (m2/g) | 1.13 |
Tap density (g/cm3) | 0.99 |
Gram capacity (mAh/g) | 957.1 |
Voltage (V) | 0.005~2.0v |
Gram capacity power-off test conditions | 25℃ 0.1C 0.005~2.0v |
Silicon-carbon alloy (950)–trace elements (ppm) | ||||||||||||
S | Zn | Co | Ni | Mn | Fe | Cr | Mg | Ca | Cu | Al | Na | K |
0.33 | 0.04 | 0 | 1.3 | 3.99 | 10.31 | 1.49 | 7.96 | 0 | 1.39 | 0 | 16.85 | 60.92 |
Storage:
1. Storage conditions: sealed storage at room temperature
2. Shelf life: 2 years from the production date
Physical Property:
Item | Unit | Analysis Result | Method | |
Particle Size | Dv10 | μm | 4.3 | Laser diffraction method, Malvern MS3000 particle size analyzer, UK. Laser dispersion conditions: 1% Nonidet p40 dispersant and the substance to be tested were ultrasonicated for 1 minute. |
Dv50 | pm | 7.4 | ||
Dv90 | μm | 12.5 | ||
Dv99 | μm | 17 | ||
Dn10 | μm | 2.9 | ||
Tap Density | g/cm³ | 0.99 | FZS4-4B automatic densitometer from Beijing Iron and Steel Research Institute. | |
Surface Area | m²/g | 1.13 | Multi-point BET method, US Quantachrome NOVA 4200E surface area tester, adsorbent: high-purity N₂. | |
Discharge Capacity | mAh/g | 957.1 | Half-cell test, US Arbin multi-channel cell test system. German Braun Labstar (1200780) glove box 0.05C to 5.0mV, 0.05mA to 5.0mV, 0.01mA to 5mV, 0.05C to 2.0V. | |
First Discharge Efficiency | % | 81.3 |