▎ 摘　　要

NOVELTY - Preparation of graphene-supported palladium nickel/cerium oxide nanocomposite material comprises mixing graphene oxide, cetyl trimethyl ammonium bromide and water to obtain activated graphene oxide system, dispersing nickel source, palladium source and cerium source, adding reducing agent, and subjecting to reduction reaction. USE - Method for preparation of graphene-supported palladium nickel/cerium oxide nanocomposite material used for catalytic decomposition of ammonia borane (all claimed). ADVANTAGE - The graphene-supported palladium nickel/cerium oxide nanocomposite material is environment-friendly, and has excellent catalytic decomposition effect on ammonia borane, and simple preparation method. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for catalytic decomposition of ammonia borane comprising adding 10 mg catalyst aqueous solution to 1-5 mmol ammonia borane aqueous solution, and subjecting catalytic decomposition reaction at 25-45 degrees C under closed condition. The catalyst is graphene-supported palladium nickel/cerium oxide nanocomposite material.