What conductive agents are commonly used in lithium batteries

1. Commonly used conductive agents for lithium batteries include carbon black, conductive graphite, carbon nanotubes and carbon nanofibers (VGCF). 2. Characteristics of commonly used conductive agents for lithium batteries: A. Conductive carbon black is characterized by small particle size, particularly large specific surface area, and particularly good conductivity. It can be used for absorbing and retaining liquid in the battery, but the disadvantage is that the price is high. , It is difficult to disperse. B. The characteristic of conductive graphite is that the particle size is close to the particle size of the positive and negative active materials, the specific surface area is moderate, and the conductivity is good. It acts as a node of the conductive network in the battery. In the negative electrode, it can not only improve the conductivity of the electrode, Moreover, the capacity of the negative electrode can be increased. C. SP-Li is characterized by small particle size, similar to conductive carbon black, but moderate specific surface area, especially it exists in the form of branched chains in the battery, which is very beneficial to form a conductive network, but the disadvantage is that it is difficult to disperse. D. Carbon nanotubes are emerging conductive agents in recent years. They generally have a diameter of about 5 nanometers and a length of 10-20 microns. Not only can they serve as wires in the conductive network, but they also have an electric double layer effect and play a super The high rate characteristics of the capacitor and its good thermal conductivity are also conducive to the heat dissipation of the battery during charging and discharging, reduce the polarization of the battery, improve the high and low temperature performance of the battery, and extend the life of the battery. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the differences between ternary power lithium-ion batteries and lithium batteries