ONEX 18650

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.

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