1 The adhesion between the negative electrode material and the copper foil (related to the coating machine)
2 The ductility of the copper foil (related to the calendering)
p>3 Copper foil is exposed to high temperatures. Thermal resistance (related to the coating machine)
4 The condition of the electrode plate after coating
5 The negative electrode formula may need to be changed
6 Disassembly after charging and discharging The battery confirms the adhesion between the negative electrode material and the copper foil
Once a lithium battery is broken, it can no longer be used. .
Generally, most of the batteries that can break the aluminum skin are lithium poly batteries. The compounds inside are quite reactive and will react violently when exposed to air. But it won't explode yet.
It is therefore not recommended to throw it directly into the trash. Firstment, it will be bad if someone touches it. Second, it is easy to react and is corrosive.
It is recommended to put it in the trash. Rinse the battery with plenty of water. Lithium batteries basically do not contain heavy metals or other highly toxic substances. Most compounds will be hydrolyzed to low or non-toxic salts and enter sewers. At the same time, as your quantity is small, the impact on ecology is not great. . .
The insoluble parts are the aluminum skin, the copper foil and the plastic layer. . These things do not pollute, you can throw them away directly or play with them. . .