▎ 摘　　要

NOVELTY - Preparation of graphene/magnesium nanoparticle composite material involves adding 1.5 mg/L graphene oxide, dissolving 450 mu mol/L magnesium chloride in 0.2 mol/L phosphoric acid buffer salt solution, adjusting pH value to 10, and ultrasonically stirring for 20 minutes to obtain uniform suspension; transferring suspension into reaction kettle, reacting for 12 hours at 100-120 degrees C, cooling to room temperature, taking out, and washing by deionized water to obtain precipitate; and putting precipitate in tube-type resistance furnace for heat treatment, and mixing argon-hydrogen gas. USE - Method for preparing graphene/magnesium nanoparticle composite material (claimed). ADVANTAGE - The method has cheap price, and wide application. DETAILED DESCRIPTION - Preparation of graphene/magnesium nanoparticle composite material comprises adding 1.5 mg/L graphene oxide, dissolving 450 mu mol/L magnesium chloride in 0.2 mol/L phosphoric acid buffer salt solution, adjusting pH value to 10, and ultrasonically stirring for 20 minutes to obtain uniform suspension; transferring suspension into reaction kettle, reacting for 12 hours at 100-120 degrees C, cooling to room temperature, taking out, and washing by deionized water to obtain precipitate; and putting precipitate in tube-type resistance furnace for heat treatment, mixing argon-hydrogen gas, raising temperature to 600-700 degrees C, preserving heat for 3 hours, closing heating power supply, and naturally cooling to room temperature.