▎ 摘　　要

NOVELTY - Nonwoven fabric comprises fibrous carbon nanostructure and a graphene, where ratio of the thermal conductivity in the plane direction to the thermal conductivity in the thickness direction is 30 or more. USE - Nonwoven fabric. ADVANTAGE - The nonwoven fabric has excellent in electroconductivity, thermal conductivity, and mechanical property. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing nonwoven fabric, which involves removing the dispersion medium from the mixed liquid to form pre-nonwoven fabric, reducing the pre-nonwoven fabric, preparing coarse dispersion by dispersing fibrous carbon nanostructures in a dispersion medium, and preparing a mixed liquid by mixing the coarse dispersion and graphene oxide.