▎ 摘　　要

NOVELTY - A graphite alkenyl super capacitor specific capacitance improving method involves taking expanded graphite as raw material, preparing graphene oxide by using modified hummer's process and concentrating and allowing to stand for one week. The liquid crystalline graphene is added into urea and sodium chloride, stirred by magnetically and ultrasonically dispersing, followed by placing the dried film in a reaction kettle, equipping with specific concentration of ammonia, heating the mixture in oven and natural cooling, and washing the obtained flexible reduced graphene film in deionized water. USE - Method for improving specific capacitance of a graphite alkenyl super capacitor. ADVANTAGE - The method enables improving the specific capacitance of graphite alkenyl super capacitor with strong controllability, in a simple and eco-friendly manner. DETAILED DESCRIPTION - A graphite alkenyl super capacitor specific capacitance improving method involves taking expanded graphite as raw material, preparing graphene oxide by using modified hummer's process and concentrating and allowing to stand for one week to obtain liquid crystalline graphene. The liquid crystalline graphene is added into urea and sodium chloride in a mass ratio of 1:3:3, stirred by magnetically and ultrasonically dispersing to obtain uniform mixed solution. The mixed solution is coated on a substrate with a doctor blade, immersed in acetone to remove part of water while coagulating the gelatinous film, taken out and dried in an air. The dried film is placed in a reaction kettle, equipped with a specific concentration of ammonia in a pH range of 10-13 to obtain a mixture. The mixture is heated in oven at 180 degrees C for 3 hours and natural cooled. The obtained flexible reduced graphene film is repeatedly washed in deionized water to obtain final product.