Abstract
Using a rectangular cell with three fluidized-bed electrodes (RTFBEs) separated by two electro-conductive partition plates (ECPs), the electrodeposition of copper from CuSO4 solution was carried out to examine the electrochemical activity of the respective fluidized beds (FBs). The particles in each FB were activated as an electrode by the bipolar action of the ECP. Their activity depended on the material of the ECP, the electro-conductivity of the solution and the bed expansion. The current efficiency of copper electrodeposited on fluidized particles using copper or copper-plated Pt plates as ECPs was higher than that using Pt plates. Since the bed thickness in the direction of the electric current could be effectively increased by inserting the ECPs, the electrolytic capacity in this type of cell with FBEs was found to be considerably large compared to that in a cell with a single FBE.
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