Method of fabricating graphite flakes

摘要

In a method of fabricating graphite flakes applied in a graphite nanomaterial, mesophase pitch and an organic solvent are used to produce a carbon precursor slurry, and the carbon precursor slurry is coated by a scraper to produce the graphite flakes. Since the method of using natural graphite as a raw material in production requires a number of purification processes to manufacture an expanded graphite powder before the graphite flakes can be produced, and thus the fabricating cost is very high, and other high-priced materials such as polyimide (PI) or graphene also will increase the total cost.

主权项

1. A method of fabricating graphite flakes, characterized in that mesophase pitch and an organic solvent are used to fabricate a mesophase pitch rich slurry for fabricating the graphite flakes, and the method comprises the steps of:
Step (11): fabricating a mesophase pitch rich slurry from the mesophase pitch and the organic solvent; Step (12): determining whether the viscosity of the mesophase pitch rich slurry falls within a predetermined range, and entering into the Step (13) if the viscosity falls within the predetermined range, or returning to the Step (11), if the viscosity does not fall within the determined range; Step (13): coating the mesophase pitch rich slurry onto a surface of a glass plate; Step (14): conducting oxidation treatment to convert the mesophase pitch rich slurry into flakes; Step (15): removing flakes from the surface of the glass plate; and Step (16): conducting carbonization treatment and graphitization treatment.