▎ 摘　　要

NOVELTY - Preparing graphene involves dispersing graphite in a solution of sodium bicarbonate, at 80-150 degrees C, under a degree of vacuum 0-1000 Pa, heating resulting product to 130-270 degrees C, maintaining constant temperature for 5-48 hours; ultrasonically vibrating for 30-1 hours; adding sodium hydroxide solution, regulating pH value to 7.8-10, standing for 24-72 hours to obtain suspension, at 60-100 degrees C, drying for 12-24 hours. USE - For preparing graphene (claimed). ADVANTAGE - The reaction a temperature control at 500 degrees C, which is good for preparation table with a larger area than a grapheme. The method avoids agglomeration, and does not need to add stabilizing agent.