▎ 摘　　要

NOVELTY - Dispersion liquid comprises graphene, dispersing agent, and dispersion medium which contains water as main component. USE - Dispersion liquid for manufacture of membrane (claimed). ADVANTAGE - The dispersion liquid can increase dispersion amount of graphene, can form film with excellent electroconductivity, can be easily manufactured, and has reduced environmental load. DETAILED DESCRIPTION - Dispersion liquid comprises graphene, dispersing agent of formula (1), and dispersion medium which contains water as main component. Ar1=6-30C aromatic ring obtained by removing (m+n) H atoms on aromatic ring or 4-30C heteroarene obtained by removing (m+n) H atoms; Ar2, Ar3=optionally substituted 6-30C aryl or optionally substituted 4-30C heteroaryl; R1=monovalent group containing hydrophilic group; n=1-4; R2=1-20C monovalent organic group; and m=0-3. INDEPENDENT CLAIMS are included for: (1) manufacture of dispersion liquid which involves mixing graphite, dispersing agent of formula (1), and dispersion medium containing water as main component; (2) membrane obtained from dispersion liquid; and (3) manufacture of membrane which involves coating dispersion liquid on base material, and removing dispersion medium from coated dispersion liquid.