JP2574678B

PURPOSE:To remarkably lower an electric resistance and to improve productivity by fixing a cation-exchange membrane to one side of an anode on the cathode side, and bringing the other side of the anode into contact with water. CONSTITUTION:Oxygen is electrochemically reduced on the surface of the cathode 25 in an electrolytic cell provided with the cation-exchange membrane 23 to form HO2, and a peroxide expressed by MHO2 is produced (M is an alkali metal or hydrogen). In this production device, the cation-exchange membrane is fixed to one side of the anode 21 on the cathode 25 side, and the other side of the anode 21 is brought into contact with water 27, namely, the water 27, anode 21, cation-exchange membrane 23, aq. alkaline soln. 24, cathode 25 consisting of a gas diffuser electrode, and oxygen 26 are successively arranged in the electrolytic cell, and a mixture of the hydrogen peroxide of an alkali metal and hydrogen peroxide is produced by using the cell. By this method, the cell voltage is remarkably lowered, and the current density can be increased.