▎ 摘　　要

NOVELTY - Using a cellulosic polymer to provide concentrated graphene in preparation of a graphene ink composition, comprises: exfoliating a graphene source material with a medium comprising an organic solvent at least partially miscible with water and a dispersing agent comprising a cellulosic polymer at least partially soluble in the organic solvent, where the graphene source material is not oxidized; contacting at least a portion of the exfoliated graphene medium with a hydrophobic fluid component; and hydrating the exfoliated graphene medium to concentrate the exfoliated graphene in the hydrophobic fluid component, where the concentrated graphene medium is achieved without application of centrifugal force. USE - The method is useful for preparation of the graphene ink composition. ADVANTAGE - The method is rapid, scalable and economical; is carried out without centrifugation, and thus enhances graphene concentration; utilizes low-cost organic solvents otherwise deemed ineffective for purposes of graphene exfoliation and/or dispersion.