Electrode Balancing

Electrode balancing involves taking equal amount of capacities of anode and cathode. Anode should get enough lithium ions from cathode or otherwise the complete anode is not utilized in charging and discharging. It should also be noted that extra lithium from cathode would lead to lithium deposition on anode and may crea te dendrites through the separator, leading to short circuit of the cell. Therefore anode should always be slightly more than cathode.

Balancing of the cathode requires experimental optimization by doing many cells. Coin cell may not be the best choice for optimizing. Electrodes (both anode and cathode) with stable capacity over initial cycles would be easier to balance, since change in capacity will confuse you. Electrolyte concentration is also important to optimize, especially when the capacity changes in the initial cycles drastically.