A study on zinc electrodeposition onto zinc cathode

Abstract

The electrodeposition of zinc onto a zinc cathode was studied through the comparison between theoretical and experimental polarisation curves. The former was constructed using the Butler–Volmer equation with electrochemical parameters, such as Tafel slope values, exchange current densities, equilibrium potential values, etc. The latter was obtained from data derived in a chloride based electrolyte of 0·6 mol dm⁻³ Zn²⁺ ions with boric acid (25 g dm⁻³), pH = 5. The electrochemical parameters such as exchange current density, limiting current density, equilibrium potential, Tafel slopes, can be obtained with good agreement with the values from the literature.

Keywords:

• ELECTRODEPOSITION
• ZINC
• POLARISATION CURVES