Brief Insights into Cu <sub>2</sub> O Electrodeposition: Detailed Progressive Voltammetric and Electrogravimetric Analysis of a Copper Lactate System
Krzysztof Mech, Magdalena Bisztyga-Szklarz, Konrad Szaciłowski
Abstract
The alkaline copper(II) lactate system is the most popular system applied in the electrochemical synthesis of Cu 2 O films designed for various purposes. The present work describes step by step the mechanism of electrode reactions accompanying the cathodic polarization of the electrode within a potential range from 0 to −1.0 V in copper lactate based electrolyte. Anodic processes related to the oxidation of products formed during cathodic sweep are also analyzed in detail. The performed studies indicate sequence and mechanisms of reduction of species present in the electrolyte, secondary reduction of products of cathodic reactions as well as oxidation of various species formed at the electrode surface.