GRAPHENE COMPOSITE AND METHOD OF PRODUCING THE SAME

摘要

Provided is a graphite-based carbon material useful as a graphene precursor, from which graphene is easily exfoliated when the graphite-based carbon material is useful as a precursor and from which a highly-concentrated graphene dispersion can easily be obtained. The graphite-based carbon material is a graphite-based carbon material useful as a graphene precursor wherein a Rate (3R) based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more:;Rate (3R)=P3/(P3+P4)×100  Equation 1;wherein
P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, andP4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.

主权项

1. A graphene composite comprising at least a graphene is partially exfoliated from the graphite-based carbon material and dispersed in a base material,
the graphite-based carbon material having a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1, is 31% or more:
Rate (3R)=P3/(P3+P4)×100  (Equation 1) wherein
P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, andP4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method, the graphene being a crystal of a mean size of 100 nm or more and formed in a flake-like or sheet-like shape having 10 layers or less.