| 摘要 |
PURPOSE:To inhibit the deterioration of a carbonaceous three dimensional electrode to a minimum extent, and a the same time, make the electrode usable for oxygen generation electrolysis by forming a silicon carbide-coated layer on the positively polarizable surface of the carbonaceous there dimensional electrode of a three dimensional electrode-type electrolytic tank. CONSTITUTION:A silicon carbide-coated layer 7 is formed on the positively polarizable surface, that is, the surface where oxygen generates, of a carbonaceous three dimensional electrode 5 of a three dimensional electrode-type electrolytic tank 2. This coatd layer 7 prevents oxygen which generates due to electrolysis or during electrlytic treatment from coming into contact with the carbonaceous electrode 5. In addition, carbon dioxide is prevented from generating beyond a required generation level by inhibiting the desorption of carbon dioxide generated by chemical reaction between oxygen and the electrode 5. Consequently, it is possible to inhibit the deterioration of the carbonaceous three dimensional electrode to a minimum extent and utilize the electrode as an oxygen generation electrode. |
