Such an observation supports low current efficiency. It hasbeen already reported that electrolysis of cupric chloride causes corrosion of copper cathode and causes precipitation of CuCl [23].
Although the reduction in current efficiency associated with ferric and cupric ions is expected, it is useful to note that reasonable cur-rent efficiencies are achievable without the use of a diaphragm cellor anode bags. In an industrial application, electrolyte flow con-trol or separation of anolyte and catholyte would result in greaterefficiencies.