THE METHOD FOR GENERATING DEACTIVATED ELECTRODE IN THE CELL FOR ELECTROLYZING SALT WATER

摘要

A method for regenerating a deactivated electrode in a simpler and more economical manner by regenerating the electrode in a state that an electrode is not separated in the electrolysis of salt water is provided. A method for regenerating a cathode comprises treating an electrode with a liquid phase without separating an electrode plate in an electrolytic cell for electrolyzing salt water. The cathode is made from nickel. The liquid phase treatment is performed using a solution selected from the group consisting of a hydrochloric acid solution, a hydrogen peroxide solution and an organic solvent. The liquid phase treatment is performed using the hydrogen peroxide solution. The organic solvent is potassium iodide. The solution has a weight ratio of 1:1 to 1:20. The liquid phase treatment is performed at a temperature of 20 to 100 deg.C. The liquid phase treatment is performed for 10 minutes to 100 hours. A method for regenerating a cathode comprises subjecting an electrode to gas-phase heat treatment without separating an electrode plate in an electrolytic cell for electrolyzing salt water.