Effect of temperature and current density on PbO2 composite electrodes

Abstract

In this paper, PbO₂ anode was prepared by pulse electrodeposition. The effect of temperature and current density on the thickness, micromorphology, crystal structure and grain size, and the deposition process was proposed and demonstrated by XPS. Furthermore, the effect of temperature and current density on the current efficiency, overpotential, and charge transfer resistance was systematically investigated by electrochemical properties, and the corresponding mechanism was analyzed. The results exhibit that the optimized temperature of the plating solution is about 50 °C. The electrode prepared at the current density of 400 A/m² exhibits the highest current efficiency, while the electrode prepared at the current density of 300 A/m² presents lower overpotential (0.7548 V) and smaller charge transfer resistance. This work provides a reference for the efficient electrodeposition of PbO₂ composite electrodes.