▎ 摘　　要

NOVELTY - Method for preparing graphene flake composition, involves (i) preparing expandable graphite, (ii) charging the expandable graphite to a furnace, (iii) sealing the furnace, (iv) heating the furnace by irradiating microwaves, (v) maintaining or lowering the temperature of the expandable graphite by stopping the microwave irradiation, (vi) repeating steps (iv)-(v) until the purity of carbon becomes greater than or equal to 95% to obtain graphene flakes, and (vii) mixing 1-100 pts. wt. graphene obtained in step (vi) and 100 pts. wt. binder polymer. USE - The method is used for preparing graphene flake composition (claimed). ADVANTAGE - The method is simple to operate, obtains graphene flakes from graphite in a short time with high yield, and is economical. The graphene flake composition has high purity of graphene, uniform particle property, and excellent properties such as thermal conductivity and electrical conductivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a graphene flake composition prepared by the above method.