▎ 摘　　要

NOVELTY - Preparing graphene-supported palladium nanoparticle composite material, comprises adding adenine to ethylene glycol until the adenine is uniformly dispersed, adding graphene until the graphene is uniformly dispersed, and then stirring until portion of the adenine is adsorbed on the surface of the graphene. The binding site is introduced on the surface of the graphene, and then a palladium source is added until the palladium source is uniformly dispersed and then stirred until the palladium ion in the palladium source is effectively combined with the binding site. The reaction solution is obtained, and the pH of the reaction solution is adjusted to 7-12.5, and the reaction solution is refluxed and stirred at 150-180 degrees C, and after solid-liquid separation, the solid phase is washed and dried. USE - Method for preparing graphene-supported palladium nanoparticle composite material for use as a direct formic acid fuel cell catalyst (claimed). ADVANTAGE - The method enables to prepare graphene-supported palladium nanoparticle composite material is used as a catalyst for a direct formic acid fuel cell, and has very high catalytic activity and stability for formic acid oxidation. The method is simple and quick to operate, saves cost for actual production, and is suitable for expanded production.