Method for producing monolithic titanium suboxide TiOx ceramic electrode for water electrochemical treatment and electrode produced using same

摘要

The invention relates to a method for producing monolithic titanium suboxide TiO x ceramic electrode for water electrochemical treatment and to an electrode produced using this method. The method for producing an electrode is performed in the following way: from the mixture of titanium oxide TiO 2 powder, water and binder, a green body in the shape of a flat strip is formed by extrusion, a green body is dried, a hole (2) for fastening an electroconductive element (4) in one end of the dried green body is made, a monolithic titanium suboxide TiO x , where x is in the range from 1.95 to 1.97, ceramic strip (1) with the open porosity 10-30% is formed by thermal treating of the green body, on the surface of the flat strip around the hole (2) at least 5 mm wide zone of 5-20 microns thick electroconductive coating (3) is sputtered, creating continuous metal-ceramic connection, through the hole (2) with a screw (6), a spring washer (7) and a nut (8) the electroconductive element (4) to which an electrical wire (5) is connected, is motionlessly mechanically fastened to the monolithic titanium suboxide ceramic strip (1) where electroconductive coating is, thereafter, using vacuum impregnation, the end of the electrode (9) where electric connection is created, is sealed with the epoxide resin, sealing it off completely. The produced electrode has large specific active surface and its operating duration in the water electrochemical treatment devices with the current density 5-10 mA/cm 2 exceeds 2 years.