1. improve the conductivity and stability of electrolyte: ethylenediamine can be used as an effective electrolyte additive, which can improve the conductivity and stability of electrolyte, thus promoting the electrolytic reaction.
2. Promote the deposition of copper: ethylenediamine can be used as a complexing agent to form a stable complex with copper ions, thus reducing the deposition rate and amount of copper ions and improving the effect and rate of electrolytic copper removal.