What are the main points of control of microporous copper foil aluminum foil on lithium ion batteries?

Key points of control of microporous copper foil aluminum foil on lithium ion battery

1. Coating anti-leakage;

During the coating process, the microporous copper foil aluminum foil should prevent the slurry viscosity from being too low, causing the slurry to leak from the pores of the foil during the extrusion coating process. The foils with different pore sizes and porosity have different viscosity requirements for the slurry. . Taking a microporous aluminum foil with a porosity of 17% and a pore diameter of 0.35 mm as an example, the test shows that the viscosity of the positive electrode material is about 8000, and the minimum is not lower than 6000. In the extrusion coating process, the transmission speed needs to be properly adjusted. (The slurry is allowed to stand for too long, and it is easy to infiltrate to the other side, and rapid drying can be solved)

2. The burr control of the pole piece cutting;

Finally, I hope that my friends who have completed microporous copper foil or aluminum foil for lithium-ion battery experiments can share data and communicate.

Another: Microporous copper foil is used for lithium capacitors, super capacitors, nickel-cadmium, nickel-metal hydride batteries the performance improvement is very obvious the reason for the non-scale promotion is the cost. The machining method is used to make holes, and the production efficiency is extremely high. It is expected that the cost after mass production is limited than the conventional double-light copper foil (the estimated final price is around 130,000/ton).

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