In a rechargeable battery, the cathode is the positive electrode during discharge, and it plays a critical role in storing and releasing lithium ions. It is one of the two main components in a battery cell (along with the anode) and largely determines the battery’s voltage, energy density, thermal stability, and cost.
Role in Performance:
Determines voltage of the cell (via redox potential)
Affects charge/discharge rate capability
Influences degradation and calendar aging
