Abstract
The alpha-PbO2 deposition layers were prepared on the surface of Al/Pb substrates by constant current electrosynthesis from an alkaline bath, and Al/Pb/alpha-PbO2 composite inert anode materials were obtained. The effects of the bath composition and bath temperature on the electrosynthesis of alpha-PbO2 were investigated by means of anodic polarization method, the phase structures and surface microstructures of Al/Pb and alpha-PbO2 deposition layers were tested by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The experimental data have shown that the process of alpha-PbO2 formation have several stages. The appropriate conditions can effectively improve the formation rate of alpha-PbO2 and avoid the occurrence of oxygen evolution reaction. The alpha-PbO2 deposition layer obtained in alkaline bath possesses rhombic structure, and it is composed of well developed spherical unit cells.
Published Version
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