The invention pertains to the field of electrochemical methods for the preparation of inorganic compounds. The invention relates to a cerium-containing air electrode for industrial preparation of alkaline hydrogen peroxide and a preparation method thereof. The multi-component electrode set of the invention is assembled by a unit plate, each pair of electrodes consisting of a cathode plate, a helium-containing air cathode carbon core, an ion exchange membrane, a plastic support net and an anode plate, and a fluid distribution is arranged at the upper and lower ends of the electrode working area. The chamber and the collection chamber are provided with an orifice at the fluid inlet, and the multi-component electrode is connected in series with a limited dipole, and the plastic hose for circulating the anode water is extended to more than 5 meters. The invention can prepare alkaline hydrogen peroxide with direct use of low-pressure air and obtain satisfactory working indexes, and there is no disadvantage that the electrode is inactivated by alkali water.
An erbium-containing air electrode for producing alkaline hydrogen peroxide, characterized in that each pair of electrodes is composed of an anode plate, a plastic mesh, a cation membrane and a ruthenium-containing air cathode, and a fluid distribution chamber is provided at the upper and lower ends of the electrode working area and The collection chamber for discharging the fluid is provided with an orifice at the fluid inlet, and the multi-component electrode is connected by a limited dipole series connection, and the plastic hose for the anode circulation and the alkali water is extended and then connected to the liquid collection manifold. The multi-component electrode group is assembled by the unit plate.
