▎ 摘　　要

NOVELTY - Preparation of nickel-cobalt double metal hydroxide doped graphene doped foam nickel composite material involves (i) adding the foamed nickel in a quartz tube, passing argon and hydrogen, heating from room temperature to 950-1050 degrees C, increasing the flow of hydrogen gas and maintaining warm, (ii) using methane gas, passing mixed gas of hydrogen and methane, cooling to room temperature under argon atmosphere to prepare graphene and foamed nickel composite material, (iii) dissolving cobalt nitrate hexahydrate and nickel nitrate hexahydrate in distilled water, stirring until the solution is transparent, and soaking the graphene and nickel foam composite material in the solution, (iv) transferring the solution and the infiltrated graphene and nickel foam composite material to the reaction liner for hydrothermal reaction, and (v) taking out the sample after the hydrothermal reaction and washing and drying. USE - Preparation of nickel-cobalt double metal hydroxide doped graphene doped foam nickel composite material used for energy and electrocatalysis applications. DETAILED DESCRIPTION - Preparation of nickel-cobalt double metal hydroxide doped graphene doped foam nickel composite material without alkali agent involves (i) adding the foamed nickel in a quartz tube, passing argon and hydrogen, heating from room temperature to 950-1050 degrees C, increasing the flow of hydrogen gas and maintaining warm for 20-30 minutes, (ii) using methane gas as a carbon source, passing mixed gas of hydrogen and methane in ratio of 4:1 into the quartz tube for constant temperature reaction for 10-20 minutes, cooling to room temperature under argon atmosphere to prepare graphene and foamed nickel composite material, (iii) dissolving cobalt nitrate hexahydrate and nickel nitrate hexahydrate in distilled water, stirring until the solution is transparent, and soaking the graphene and nickel foam composite material in the solution, (iv) transferring the solution and the infiltrated graphene and nickel foam composite material to the reaction liner for hydrothermal reaction, and (v) taking out the sample after the hydrothermal reaction and washing several times and drying in a vacuum.