In this study lead and lead silver alloys are anodic polarized galvanostaticly for 20 h in Ca2+-containing electrolyte, so that Co(x)O(y) doped leaddioxide surface layers are produced. Afterwards these materials are investigated by anodic polarization in 200 g/l sulfuric acid solution under galvanostatic conditions. Then current density - potential - curves are measured, the Tafel-plots are calculated and compared with a lead anode, which is polarized without Ca2+-ions. The optimal conditions for a dense and mechanical strong doped oxide layer are established. The obtained anodes show potential of oxygen formation 120 m V lower than a lead anode. A summary of the effects of silver and cobalt is not detected.