1. General information on co-deposition

Due to the complexity of the electrolytes used, the codeposition of metal alloys is less straightforward than the electrodeposition of a single metal. For two metal cations, ${\text{M}}_{\text{1}}^{\text{n+}}$ and ${\text{M}}_{\text{2}}^{\text{n+}}$ , to reduce simultaneously at the cathode, they must be brought to the same discharge potential E _d during electrolysis [1] . To achieve this, it is necessary to impose a potential difference across the electrolytic reactor...