NOVELTY - Preparing molybdenum-based hydrogen electrode involves pre-treating nickel foam substrate in acetone solution using ultrasonic vibrations for 15 minutes for chemical degreasing. The obtained mixture is added with 3 mol/l hydrochloric acid for 30 minutes to remove oxide from surface of the substrate. The obtained substrate is cleaned with deionized water, and then immersed in absolute ethanol. The molybdenum solution is mixed with deionized water and mixed solution of metal salt to obtain molybdenum precursor. The concentration of mixed solution of metal salt is 0.005-0.2 mol/l.    USE - Method for preparing molybdenum-based hydrogen electrode (claimed).    ADVANTAGE - The method enables to prepare molybdenum-based hydrogen electrode that has high stability and hydrogen activity in simple and cost-effective manner, and is suitable for industrial production, and requires less equipment and area.    DETAILED DESCRIPTION - Preparing molybdenum-based hydrogen electrode involves pre-treating nickel foam substrate in acetone solution using ultrasonic vibrations for 15 minutes for chemical degreasing. The obtained mixture is added with 3 mol/l hydrochloric acid for 30 minutes to remove oxide from surface of the substrate. The obtained substrate is cleaned with deionized water, and then immersed in absolute ethanol. The molybdenum solution is mixed with deionized water and mixed solution of metal salt to obtain molybdenum precursor. The concentration of mixed solution of metal salt is 0.005-0.2 mol/l. The concentration of molybdenum solution is 0.005-0.2 mol/l. The obtained substrate is mixed with molybdenum precursor in reaction vessel at 60-300 degrees C for 1-72 hours. The obtained reaction mass is washed with deionized water, and then dried. The dried reaction mass is kept at 0-600 degrees C under hydrogen atmosphere at 0-5 hours, and then cooled to room temperature. The obtained reaction mass is mixed with phosphorus source, and then placed in furnace at 200-800 degrees C under inert gas atmosphere for 0.5-6 hours. The obtained mixture is cooled to room temperature. The obtained electrode is kept in hydrogen atmosphere at 0-900 degrees C for 0-5 hours, and then cooled to room temperature to obtain molybdenum-based hydrogen electrode.