If you make a battery, the contents of the battery are harmful to people's health. It is not recommended to go. You should bring a gas mask or a mask to work. I opened a battery ingredient bucket without knowing it before, and I couldn't eat it for a day after pumping it. If I am making a package, it basically has no effect on my body (individual stations need to be exposed to organic solvents), which is harmful.
Matters needing attention
Storage requirements: In an environment with a temperature of 20 5℃ and a humidity of no more than 50%, the aluminum foil should be protected from corrosion by air and water vapor during transportation.
The product is divided into two types: A and B. Its key features are: A is black in appearance, and the conventional coating thickness is 4~8μm on both sides, which makes the conductivity more prominent; The appearance of type B is light gray, and the thickness of conventional coating on both sides is 2 ~ 3 μ m. Several layers can be welded less in the coating area, and the skip gap can be recognized by the coating machine.
B-type (gray) carbon-coated aluminum foil can be directly welded in the coating area by ultrasonic welding, which is only suitable for welding the tab of wound battery (the pole piece has at most 2-3 layers), but the power and time of ultrasonic welding need to be slightly adjusted.
The heat dissipation of carbon layer is worse than that of aluminum foil, so it is necessary to fine-tune the tape speed and baking temperature when coating.
This product has greatly improved the comprehensive performance of lithium batteries and capacitors, but it can not be used as the main factor to change some performance of batteries, such as battery energy density, high and low temperature performance, high voltage and so on.
Refer to the above content: Baidu Encyclopedia-Lithium Battery