What Is the Electrochemical Principle of Lithium Ion Batteries?
The main component of the positive electrode of the lithium ion battery is LiCoO2, and the negative electrode is mainly C.
- When charging:
Positive electrode reaction: LiCoO2 → Li1-xCoO2 + xLi+ + xe-
Negative reaction: C + xLi+ + xe- → CLix
Total battery reaction: LiCoO2 + C → Li1-xCoO2 + CLix
- When discharging:
The reverse reaction of the above reaction occurs during discharge.