NOVELTY - The electrolytic cell (1) comprises a flat, cuboid, cylindrical or hollow cylindrical body (2) made of metal or transition metal with a diamond layer as an anode, a solid electrolyte (3) as a film on the surface of the body, a screen (4) arranged on the solid electrolyte, and a hole member (5) formed on the screen as a cathode, so that openings are formed through the screen and the hole member for passage of water. The body extends beyond the solid electrolyte, where the screen and the hole member are arranged on a side of the body.    USE - The electrolytic cell is useful for decomposition of water into hydrogen and oxygen in the form of ozone (claimed), where the water is generated from articles used in medicine.    ADVANTAGE - The electrolytic cell can be used to produce high purity water without electrical conductivity, and can be used to generate ozone easily.    DETAILED DESCRIPTION - The electrolytic cell (1) comprises a flat, cuboid, cylindrical or hollow cylindrical body (2) made of metal or transition metal with a diamond layer as an anode, a solid electrolyte (3) as a film on the surface of the body, a screen (4) arranged on the solid electrolyte, and a hole member (5) formed on the screen as a cathode, so that openings are formed through the screen and the hole member for passage of water. The body is a plate, where the solid electrolyte, the screen and the hole member are arranged on the facing surfaces of the plate respectively one after the other. The body extends beyond the solid electrolyte, where the screen and the hole member are arranged on a side of the body. The screen is a perforated stainless steel sheet with planar surfaces. The hole member is a perforated plate with a plane surface made of stainless steel. An INDEPENDENT CLAIM is included for a device for decomposition of water into hydrogen and oxygen in the form of ozone.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic sectional view of an electrolytic cell.    Electrolytic cell (1)    Cylindrical body (2)    Solid electrolyte (3)    Screen (4)    Hole member. (5)