Lead dioxide coating obtained by pulsed current technique

The electrocatalytic beta-lead dioxide coating on a Ti/SnO2 substrate was obtained with the use of the pulsed current technique. The effect of the pulsed current density on the heterogeneous nucleation, on the morphology of the coating as well as on its crystalline form was studied by means of scanning electron microscopy (SEM) and X-ray diffraction. The obtained results indicate that the increase in the pulsed current density induces a preferential heterogeneous nucleation on the substrate, reduces the dimensions of the crystals, effects their orientation and increases the internal stress of the lead dioxide coating.