▎ 摘　　要

NOVELTY - Preparing graphene by an arc discharge method comprises (a) preparing graphene; and (b) preparing graphene conductive ink. USE - The graphene is useful in foldable electronic devices (claimed). ADVANTAGE - The method produces: product having high yield, high purity, good crystallinity, and graphene conductive inks has good dispersion rate, does not undergo stratification, high temperature resistance, good electrical conductivity and good flexibility.