▎ 摘　　要

NOVELTY - A graphene is assembled and synthesized coordinately by subjecting carbon source to acid or alkali treatment, mixing pre-treated carbon source and solvent, heating thermally, adding catalyst, and stirring; subjecting mixture to ultrasonic, hydrothermal or microwave treatment, subjecting treated product to pre-carbonization, heating pre-carbonized product, and calcining; and washing calcined product with distilled water, and drying or vacuum drying. USE - Method of coordinated assembling and synthesizing of graphene. ADVANTAGE - The method is simple, safe and low cost; has high yield; can control product dimension; does not require expensive device; and obtains graphene having even shape, single or multi-layer structure, dimension of 500 nm to 5 mu m, and excellent conductivity. DETAILED DESCRIPTION - A graphene is assembled and synthesized coordinately by: (A) subjecting carbon source to acid or alkali treatment, mixing pre-treated carbon source and solvent at a mass ratio of 1:2-100, heating thermally at 120 degrees C for 2-8 hours, adding catalyst, and stirring the mixture at 40-90 degrees C at a speed of 100-350 rpm for 4-24 hours; (B) subjecting mixture to ultrasonic, hydrothermal or microwave treatment, subjecting treated product to pre-carbonization at 200-400 degrees C for 1-6 hours in the presence of inert gas, heating pre-carbonized product to 550-1200 degrees C with a temperature gradient of 2-20 degrees C/minute, and calcining at 550-1200 degrees C for 5 minutes to 8 hours; and (C) subjecting calcined product to acid reflux treatment, washing with distilled water until pH of washing solution is 7, and drying at 90-120 degrees C or vacuum drying at 60-80 degrees C for 2-8 hours. The mass ratio of carbon source and catalyst is 1:0.05-2. The solvent is water, ethanol and/or glycol. The inert gas has a speed of 20-1500 ml/minute.