Electrodes made of titanium oxide with common formula TiO2-x are considered as materials of high potential in water electrolyses, because of excellent chemical stability in hazardous environments, good mechanical strength, high refractive index, and many other remarkable features. Nowadays electrochemical disinfection has gained increasing attention as an alternative for conventional drinking water treatment, because it is regarded as environmentally friendly, amendable to automation, inexpensive, easily operated and is known to inactivate a wide variety of microorganisms from bacteria to viruses and algae. The aim of this work was to investigate the influence of oxygen nonstoichiometry on physical and electrical properties of obtained TiO2-x electrodes. Titanium oxide ceramics were prepared using extrusion process and subsequent thermal treatment in two stages - in air at different temperatures and then under vacuum conditions.