Method of preparing graphene nanoplate, prepared graphene nanoplate, graphene nanoplate paste, and conductive layer including the graphene nanoplate

摘要

A method for preparing graphene nanoplate (GNP) is provided and includes preparing expanded graphite (EG) and exfoliating, grinding, or cracking the expanded graphite to crack the EG induced by gas-phase-collision. A graphene nanoplate paste and a conductive coating layer formed of the graphene nanoplate paste are provided and are prepared by the method for preparing graphene nanoplate.

主权项

1. A method of preparing a graphene nanoplate (GNP), comprising:
preparing expanded graphite (EG); and exfoliating, grinding, or cracking the EG by colliding the expanded graphite by a gas-phase high speed to crack the EG induced by gas-phase-collision, wherein the exfoliating, grinding, or cracking the expanded graphite by gas-phase high speed collision is performed using a turbulence-inducing method including:
transferring the expanded graphite into a chamber equipped with a sample inlet and a rotator at a lower part of the chamber, andspinning the rotator to induce turbulence into the chamber, and exfoliating, grinding, or cracking the expanded graphite by the induced turbulence, and wherein the gas-phase high speed collision is performed by inducing the expanded graphite to collision at the gas-phase high speed of about 0.5 ×102 to about 10 ×102 m/s.