▎ 摘　　要

NOVELTY - An ink comprises a graphene sheet composition dispersed in a dispersion medium. The graphene sheet composition includes graphene sheet and 2 or more sheets, and has average sheet size (SARS) of 1-100 nm. The content of graphene in the graphene sheet composition is 30-100%. The content of graphene in the graphene sheet is more than the content of graphene in each layer of two or more layers. USE - Ink e.g. inkjet ink used in printing apparatus for forming film used for component for electronic device (all claimed). Uses include but are not limited to wiring material, transparent electrode, organic thin-film transistor, organic electroluminescent element, photoelectric conversion element and liquid crystal display. ADVANTAGE - The ink has excellent electroconductivity and film-forming property, and high average surface-resistance value.