▎ 摘　　要

NOVELTY - Preparing graphene comprises (i) mixing the expansion graphite and small molecular vaporized substances according to certain ratio, and (ii) contacting plasma arc generator of one electrode with the expanded graphite and small molecule vaporized substance mixture, so that there is a certain distance between the mixture of the other electrode, the plasma arc generator through the electrodes to generate high temperature plasma electric arc, burning the expanded graphite and small molecule mixtures of vaporized substance, and fast vaporizing small molecule vaporized substance. USE - The method is useful for preparing graphene (claimed). ADVANTAGE - The method can make small molecule vaporized substance vaporization molecular distance increase rapidly to produce great expanding force. DETAILED DESCRIPTION - Preparing graphene comprises (i) mixing the expansion graphite and small molecular vaporized substances according to certain ratio, and (ii) contacting plasma arc generator of one electrode with the expanded graphite and small molecule vaporized substance mixture, so that there is a certain distance between the mixture of the other electrode, the plasma arc generator through the electrodes to generate high temperature plasma electric arc, burning the expanded graphite and small molecule mixtures of vaporized substance, fast vaporizing small molecule vaporized substance, increasing small molecule vaporized substance vaporization molecular distance rapidly to produce great expanding force, obtaining graphene sheet.