▎ 摘　　要

NOVELTY - Preparing graphene supported copper-nickel/cerium oxide nano-composite material comprises (i) mixing graphene oxide and water to obtain oxidized graphene aqueous solution, and (ii) dispersing nickel source, copper source and cerium source in the oxidized graphene aqueous solution and then adding reducing agent into system to perform reduction reaction under protection of nitrogen to obtain the graphene supported copper-nickel/cerium oxide nano-composite material. USE - The method is useful for preparing the graphene supported copper-nickel/cerium oxide nano-composite material (claimed). ADVANTAGE - The material has excellent catalytic effect. The method is simple, conditionally gentle and environmentally friendly. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for; (1) the graphene supported copper-nickel/cerium oxide nano-composite material is prepared by above mentioned method; and (2) the catalytic decomposition of the ammonia borane comprises adding the aqueous solution of the catalyst to the aqueous ammonia borane solution and subjecting to catalytic decomposition reaction under a closed condition, where the catalyst is 10 mg graphene supported copper-nickel/cerium oxide nano-composite material, the amount of the ammonia borane is 1-5 mmol, the reaction temperature of the catalytic decomposition reaction is 25-45 degrees C.