The main composition of the positive electrode of lithium-ion battery is LiCoO2, and the negative electrode is mainly C,

Cathode reaction: LiCoO2 → Li1-xCoO2 + XLI + + Xe-

Negative reaction: C + XLI + + XE - → Clix

Total reaction: LiCoO2 + C → Li1-xCoO2 + Clix

The reverse reaction of the above reaction occurs during discharge.