▎ 摘　　要

NOVELTY - A transient framework-based high conductivity graphene film producing method involves mixing graphene, multi-walled carbon nanotube, surfactant, binder and solvent, carrying out ultrasonic pre-dispersion and grinding, adding electrically conductive filler particles, centrifuging or filtering to remove large size that not well-dispersed, to obtain stable graphene dispersion liquid. The obtained graphene dispersion liquid is coated onto a substrate and dried to obtain a graphene film containing a transient structure. The graphene film is subjected to surface treatment. USE - Method for producing transient framework-based high conductivity graphene film. ADVANTAGE - The method enables producing the transient framework-based high conductivity graphene film with simple process, easy operation, low cost, excellent photovoltaic performance and improved electrical conductivity in safe and environment-friendly manner, and is suitable for industrial production on a large scale. The thickness and size of the graphene thin film is easy to control. DETAILED DESCRIPTION - A transient framework-based high conductivity graphene film producing method involves mixing graphene, multi-walled carbon nanotube, surfactant, binder and solvent, carrying out ultrasonic pre-dispersion and grinding, adding electrically conductive filler particles, centrifuging or filtering to remove large size that not well-dispersed, to obtain stable graphene dispersion liquid containing 1-100 mg/ml graphene and 0.1-50 mg/ml multi-walled carbon nanotube. The obtained graphene dispersion liquid is coated onto a substrate and dried to obtain a graphene film containing a transient structure, where the transient structure is formed of a surfactant and a binder added in the graphene dispersion liquid. The graphene film is subjected to surface treatment to remove the transient structure in the film, to obtain high-conductivity graphene film based on multi-walled carbon nanotube and graphene composite.