Dependence of electrolytic cell voltage on the structure of cathode deposits of PMS11 and PML0 powders

Abstract

The structure of dendritic copper deposit changes during electrolysis: the upper thin elongated branches are finally replaced by coarse globules. Therefore, it is important to determine the period of deposit growth without forming coarse globular particles. This period may be established by analyzing the dynamics of deposit growth and the variation in cathode overpotential, which is a contributor to cell voltage drop and may be used to monitor the structure of cathode deposit. Copper powders PMS11 and PML0 are used to calculate variation in the cell voltage and evaluate the change in deposit structure. The calculations have determined the period of growing homogenous deposits of the copper powders. © 2013 Springer Science+Business Media New York.