▎ 摘　　要

NOVELTY - Method for concentrating graphene medium involves exfoliating graphene source material with medium comprising organic solvent chosen from ethanol and dimethylformamide, and ethyl cellulose, contacting portion of exfoliated graphene medium with terpineol, and hydrating graphene-terpineol medium to concentrate exfoliated graphene in terpineol. USE - Method for concentrating graphene medium used for forming graphene ink composition used for producing functional graphene-based materials such as highly anisotropic polymer nanocomposites and transparent conductive thin films used for devices. ADVANTAGE - The method is economical and efficient, and rapidly provides well-dispersed, highly concentrated, pristine graphene solution, without impractical, time-inefficient sonication and centrifugation operations, and utilizes economical organic solvents. The graphene ink composition provides composite/film having excellent electrical property and processability.