Method for preparing graphene

Method for preparing graphene

  • CN 104,528,705 A
  • Filed: 01/06/2015
  • Published: 04/22/2015
  • Est. Priority Date: 01/06/2015
  • Status: Active Application
First Claim
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1. prepare a method for Graphene, comprise and utilize Conventional solvents, autoclave, and the primary products repetitive scrubbing, centrifugal that will obtain, obtain Graphene finally by drying treatment, it is characterized in that:

  • A. Graphite Powder 99 and solvent are directly joined in autoclave by the proportioning of 5 ~ 50g/L, open mechanical stirring device in still, constantly stir until stripping reaction terminates, till temperature reduces to room temperature;

    And in autoclave, pump into CO by pressure pump 2gas, heats up to autoclave simultaneously, makes reactor temperature reach 35 ~ 80 DEG C, and controlling pressure in reactor is 8 ~ 30MPa, impels CO in reactor 2enter supercritical state, and the temperature maintained in reactor and pressure, open the ultrasonic generator in autoclave simultaneously, under this supercritical state, carry out the ultrasonic stripping reaction of graphite, and maintain this condition 10 ~ 300 minutes, until ultrasonic stripping reaction terminates;

    B. reaction terminates rear fast pressure relief to normal pressure, and temperature is cooled to normal temperature;

    C. by gained primary products repetitive scrubbing, centrifugal, Graphene is obtained finally by drying treatment.

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