METHOD FOR PREPARING GRAPHENE THROUGH RAPID THERMAL TREATMENT IN AIR ATMOSPHERE

摘要

A method for preparing graphene powder through rapid thermal treatment in an air atmosphere. The method comprises: placing a precursor of graphene in an unsealed covered crucible, and performing thermal treatment in an air atmosphere, to obtain graphene powder; alternatively, uniformly mixing the precursor of graphene with a nitrogen-containing compound, then placing the mixture in the unsealed covered crucible, and performing thermal treatment, to obtain nitrogen-doped graphene powder. The method requires no protection from an inert gas or a reducing gas, so that the requirement on equipment is lowered; the thermal treatment temperature of graphene is reduced to 250 to 850°C, which greatly expands the thermal treatment temperature range of graphene, and reduces power consumption; and nitrogen controllable doping of graphene is realized, and the controllable doping facilitates applications of the graphene powder.