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About conductive agent?

The conductive agent is to ensure that the electrode has good charge and discharge performance. A certain amount of conductive material is usually added when the pole piece is made, and it plays the role of collecting micro-current between the active material and between the active material and the current collector to reduce the The contact resistance of the electrode accelerates the movement rate of electrons, and can also effectively increase the migration rate of lithium ions in the electrode material, thereby improving the charge and discharge efficiency of the electrode.

Carbon black conductive agent:

Conductive carbon black is characterized by small particle size, particularly large specific surface area, and particularly good electrical conductivity. It can absorb and retain liquid in batteries.

Commonly used lithium-ion battery conductive agents can be divided into traditional conductive agents (such as carbon black, conductive graphite, carbon fiber, etc.) and new conductive agents (such as carbon nanotubes, graphene and their mixed conductive paste, etc.).

The types of conductive agents on the market are SPUERLi, S-O, KS-6, KS-15, SFG-6, SFG-15, 350G, acetylene black (AB), Ketjen black (KB), vapor growth carbon fiber (VGCF) , carbon nanotubes (CNT) and so on.

In the latest research progress, the conductive agent selected for some lithium-ion batteries is a mixed slurry of two or three of CNT, graphene, and conductive carbon black.

Compounding conductive agents to make conductive pastes is a demand for industrial applications, and it is also the result of synergies among conductive agents to stimulate their use.

Whether it is carbon black, graphene or CNT, it is already very difficult to disperse when the three are used alone.

If you want to mix them evenly with the active material, you must disperse them before stirring the electrode slurry. Then put it into use.