Preparation method of graphene dispersion

Abstract

A preparation method a graphene dispersion is provided, including the following steps. First, a homogenization process is performed on a graphene powder and a processing solvent to form a graphene paste. Next, a layer-thinning process is performed on the graphene paste to form a graphene dispersion.

What is claimed is: 
     
         1 . A preparation method of a graphene dispersion, comprising:
 performing a homogenization process on a graphene powder and a processing solvent to form a graphene paste; and   performing a layer-thinning process on the graphene paste to form a graphene dispersion.   
     
     
         2 . The preparation method of the graphene dispersion of  claim 1 , wherein the preparation method of the graphene powder comprises:
 performing a continuous high-speed reciprocating rolling process on a graphite raw material to form a graphite precursor, wherein the graphite precursor has a dislocation structure;   subjecting the graphite precursor to an intercalation reaction via a horizontal compressed air flow to form a graphene-gas intercalation compound;   subjecting the graphene-gas intercalation compound to a swelling/exfoliation process via an intercalated air pressure release to form a graphene aggregate; and   making the graphene aggregate suspend, drift, and collide with one another in the air flow to produce the graphene powder.   
     
     
         3 . The preparation method of the graphene dispersion of  claim 2 , wherein an intercalation spacing in the graphite precursor is 3.44 Å to 3.60 Å. 
     
     
         4 . The preparation method of the graphene dispersion of  claim 2 , wherein a wind velocity of the horizontal compressed air flow is Mach 0.3 to Mach 1. 
     
     
         5 . The preparation method of the graphene dispersion of  claim 2 , wherein an air volume of the horizontal compressed air flow is 186 CMM to 619 CMM.