▎ 摘　　要

NOVELTY - Preparing graphene by electric arc method and direct current electric arc method comprises taking graphite rod as the cathode and anode, and then placing cathode and anode vertically, and then vacuumizing the electric arc furnace, and charging hydrogen or mixed gas of hydrogen and other gas, then starting arc and collecting reaction cavity inner wall deposit to obtain final product. USE - The method is useful for preparing graphene by electric arc method and direct current electric arc method. ADVANTAGE - The graphene: high purity, excellent crystallinity and low number of layers; and the method: has simple preparation process and low production cost; and is safe.