Methods for preparation of concentrated graphene compositions and related composite materials

摘要

A rapid, scalable methodology for graphene dispersion with a polymer-organic solvent solution and subsequent solvent exchange, as can be utilized without centrifugation, to enhance graphene concentration.

主权项

1. A method for concentrating a graphene medium, said method comprising:
exfoliating a graphene source material with a medium comprising an organic solvent selected from ethanol and dimethylformamide, and an ethyl cellulose; contacting at least a portion of said exfoliated graphene medium with a terpineol; and hydrating said graphene-terpineol medium to concentrate exfoliated graphene in said terpineol.