▎ 摘　　要

NOVELTY - Use of star-shaped block polymer as dispersant in preparing graphene dispersion liquid comprises star-shaped block polymer takes polyglycerol as core, polymer with X-b-Y diblock copolymer as an arm, and has general formula of Polyglycerol-g-X-b-Y, where the molecular structure of the monomer of block X has a benzene ring and the benzene ring is connected with a branched chain with a carbon-carbon double bond, the number of carbon atoms of the branched chain with carbon-carbon double bond is less than or equal to 4, and Block Y is a water-soluble polymer. USE - The polymer is useful as dispersant in preparing graphene dispersion liquid (claimed), in flexible energy storage device, photoelectric, sensor, semiconductor material, and medicine carrier. ADVANTAGE - The polymer: has high stability, high solid content, high yield and no agglomeration of water-soluble graphene dispersion, provides high economic benefit and can be produced in large scale. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing graphene dispersion liquid.