▎ 摘　　要

NOVELTY - Preparation of grained graphene-supported nano-platinum composite material comprises preparing 15-25 ml glycol solution of graphene oxide, preparing 5-15 ml water solution of chloroplatinic acid, mixing two solution, dispersing, and transferring to reaction kettle; and placing water solution of chloroplatinic acid and glycol solution of graphene oxide into reaction kettle with tubular furnace, heating to 5-20 degrees C/minute, reacting at 180-220 degrees C for 2-4 hours to obtain block, washing with pure water and ethanol, and drying in vacuum. USE - Method for preparing grained graphene-supported nano-platinum composite material (claimed). ADVANTAGE - The material has simple process, high utilization rate, and stable and reliable structure and performance. It is economical and environment-friendly.