NOVELTY - Composite electrode comprises three-dimensional foamed nickel as a carrier and copper and cobalt as metal which are loaded by electrochemical method on surface of the three-dimensional foamed nickel, where metal plating layer comprises copper and the outer coating comprises cobalt.    USE - Composite electrode used for producing hydrogen (claimed).    ADVANTAGE - The composite electrode is non-toxic, and has high catalytic activity, and preparation process is simple which is suitable for large scale production.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing composite electrode, which involves:    (A) degreasing three-dimensional foamed nickel in acetone for 1-2 minutes and then washing the degreased material with ultrapure water;    (B) keeping the washed material in a (18 wt.%) hydrochloric acid solution for acidified activation and then washing the obtained material ultrapure water for 4-7 minutes;    (C) keeping the obtained material in copper plating solution, where copper is anode, a three-dimensional foamed nickel is cathode and electric current density is 0.01-0.05 ampere per square centimeter ;    (D) performing electro-deposition process with the obtained material for 500-700 seconds and then washing three-dimensional electrochemical deposited copper nickel foam with ultrapure water;    (E) performing ultrasonic process with obtained material in super-pure water for 4-7 minutes and then keeping the obtained material in nickel-cobalt plating solution having cobalt and copper anode rod and ultrasonic three-dimensional foamed nickel as cathode, where electric current density is 0.01-0.05 ampere per square centimeter;    (F) performing electro-deposition process for 500-700 seconds and then washing the obtained material with super-pure water;    (G) performing performing ultrasonic process with obtained material for 4-7 minutes; and    (H) keeping the obtained material in environment of temperature10-30 degrees C to obtain desired product.