▎ 摘　　要

NOVELTY - Preparation of graphene superconducting film involves soaking graphene oxide film in reaction solution for liquid phase reduction, performing drying treatment and heat treatment, where the heat treatment includes low-temperature heat treatment, high-temperature heat treatment and graphitization treatment, and during low-temperature heat treatment, high-temperature heat treatment and graphitization treatment, the graphene oxide film is placed vertically. USE - Preparation of graphene superconducting film used for electronic component and device with high refining degree requirement. ADVANTAGE - The method is capable of improving thickness density and reducing in-plane range of the graphene superconducting film by changing drying process and heat treatment process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for graphene superconducting film prepared by the preparation method.