Effect of temperature on cyclic voltammograms during the electrodeposition of lead

Abstract

The electrochemical behavior of lead deposition process in a temperature range between 25 and 75 °C was studied in a medium of lead chloride and ammonium acetate by linear and cyclic sweep perturbation. The study was undertaken on four substrates: Pb, Cu, Ag, and C. An increase in temperature resulted in accelerating the deposition process and promoted dendrite formation. Moreover, different kinetic parameters such as adsorption isotherms, Tafel slopes, and diffusion coefficient were affected as a function of temperature elevation. Surface analytical study performed by Auger electron spectroscopy revealed an increase in peak intensities of Cl and Pb as the temperature increased. Keywords: electrodeposition, cyclic voltammetry, potentiostatic transients, underpotential deposition, temperature effect.