▎ 摘　　要

NOVELTY - Preparing microcrystalline graphene involves heating the microcrystalline graphite powder at 800-1200 degrees C for 5-10 minutes at a heating speed of 10 degrees C per minute. The heated crystalline graphite powder is transferred into a liquid nitrogen containing clean container for processing until the liquid nitrogen volatilized completely. The processed material is subjected for ball-milling process in an exchange ball-milling tank for 80-120 degrees C under nitrogen atmosphere to obtain the desired product. USE - Method for preparing microcrystalline graphene (claimed). ADVANTAGE - The method enables to prepare microcrystalline graphene in simple and cost-effective manner, and with strong controllability, stable and light product quality, and high-capacity.