▎ 摘　　要

NOVELTY - The preparation method involves providing operation settings including a carbondioxide laser with a laser wavelength of 10.6 ~mm to a certain power, scan rate and scan times. The carbondioxide laser set in above step is used for laser scribing on the polymer according to a set pattern in a specific atmosphere. The atmosphere includes one or more of air, hydrogen, oxygen, argon, and sulfur hexafluoride. The polymer includes phosphorus triiodide, polyether ether ketone, sucrose, paper, phenolic resin, wood, polyamide-imide, polyether sulfone, polyethylenimine, cross-linked polystyrene, epoxy resin, and phosphoric acid treated cellulose. USE - Preparation method of graphene used in energy storage, sensors, optical devices, biomedicine and other fields. ADVANTAGE - The method is simple, and has low cost, high efficiency, and does not use catalyst. The preparation process is clean without pollution and is more environment-friendly. The graphene can be prepared by using polymers or other carbon-forming materials as raw materials, so that the defects or impurities can be directly introduced on the surface, which is beneficial to applications in certain fields. The graphene pattern is controllable without the use of shielding, templates and precursors, and the selectivity of raw materials is wider, so the application research in various fields is becoming more and more extensive. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation device of the preparation method of graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a structure schematic diagram of the main view of the preparation device of graphene. Fixing seat (2) First support (12) Screw module (13) Second support (14) Supporting plate (15) First cylinder (16) Limiting plate (17) Machine body frame (21) Second hydraulic cylinder (22) Laser body (23) Electric slide rail (33) Door (34)