Si-Carbon Composite Anode for Lithium-ion Batteries

In this Si-Carbon composite, the Si amount is well controlled with Si as the active component that contributes to the high lithium storage capacity. At the same time, the graphite/amorphous carbon matrix significantly buffers the volume expansion of Si, improves electronic conductivity, and stabilizes the SEI layers of the Si particles. This is a commercial product used in pouch cells and cylindrical cells.

Tips

• 0.5%~2% CNT can be added to the negative electrode formula to improve the cycling performance
• Increasing the amount of electrolyte additive is helpful to improve the poor quality of the SEI film on the silicon anode.
• The use of a special binder (such as a PAA-based binder) can effectively improve the electrochemical performance of the material (such as cycling performance).