▎ 摘　　要

NOVELTY - Graphene is synthesized under positive pressure by placing foil in chemical vapor deposition reaction chamber, introducing anaerobic gas, cleaning, filling with oxygen-free gas to positive pressure condition, and closing; heating to 700-1200 degrees C for 30-120 minutes, and keeping temperature for 10-100 minutes; and opening, feeding carbon-containing gas at flow rate of 5-50 cm3/minute for 10-30 minutes, maintaining pressure at not greater than 0.1 MPa, cooling at rate of not less than 5 degrees C/minute, and removing foil. USE - Method for synthesizing graphene under positive pressure (claimed). ADVANTAGE - The synthesis has low copper foil quality requirements.