Thus, as indicated above, the form of the metallic components and the type of pressure connection may vary. However, in all cases, the covering of ebonite is applied to the joint between the two metals. This layer extends on the conductive metal to the point were it is no longer subject to corrosion. In my composite electrode, the ebonite covering is applied to the copper conductor inside the electrolytic cell and extends to the casing or just outside the casing. The ebonite covering covers the joint between the copper conductor metal and the titanium metal, covering bolts, screws, or tubes, etc. and extending a few millimeters over the titanium surface beyond the joint.