▎ 摘　　要

NOVELTY - A high performance graphene porous film is prepared by taking 1 pt. wt. graphene oxide and 5-150 pts. wt. water, mixing, ultrasonically dispersing to obtain graphene oxide dispersion liquid, extruding into A-shaped die extrusion device at speed of 10-1000 mL/hour, coagulating with coagulating liquid at 10-80 degrees C for 1-100 seconds to graphene oxide hydrogel film, in situ growing inorganic crystals into precipitating agent for 0.1-8 hours to obtain graphene oxide film, reducing with reducing agent at 80-95 degrees C for 1-8 hours, and stucking into dissolving agent for 1-8 hours. USE - Method for preparing high performance graphene porous film (claimed) used for solar energy battery, supercapacitor and lithium ion battery energy storage field. ADVANTAGE - The method is simple, green and environment-friendly, and has low energy consumption. The product has high conductivity, good surface area and pore volume.