▎ 摘　　要

NOVELTY - The method includes: making indentations on the surface of flake or film graphite or increasing the surface roughness and then fixing it to a metal fixture, and cutting the treated graphite along one end of the unfixed metal fixture to form a pre-processed graphite structure with the upper end as a whole and the lower end as a dispersed graphite; using the graphite pre-processed structure as a positive electrode and a negative electrode to form a graphite electrode system; connecting graphite electrode systems in parallel to form a graphite array electrode; inserting the graphite array electrode into the electrolyte and electrolyzing for pre-intercalation to obtain a pre-intercalation electrode; performing electrolytic stripping on the pre-intercalated electrode in the electrolyte according to a preset voltage and a preset current density to obtain graphene; and monitoring the current density in real time according to the feedback. USE - The method is used for large-scale self-adaptive electrochemical stripping to prepare graphene for preparing a thermal management film (all claimed), and used in lithium ion battery, super capacitor, thermal management material, electric heating film, functional protective coating and heterogeneous catalyst carrier. ADVANTAGE - The method has high stripping efficiency, stripping electrochemical parameter self-adaptive adjustment, and excellent stripping effect, produces high quality of the graphene, and is suitable for large-scale production DETAILED DESCRIPTION - Method for large-scale self-adaptive electrochemical stripping to prepare graphene, includes: making indentations on the surface of flake or film graphite or increasing the surface roughness and then fixing it to a metal fixture, and cutting the treated graphite along one end of the unfixed metal fixture to form a pre-processed graphite structure with the upper end as a whole and the lower end as a dispersed graphite; using the graphite pre-processed structure as a positive electrode and a negative electrode respectively to form a graphite electrode system; connecting graphite electrode systems in parallel to form a graphite array electrode; inserting the graphite array electrode into the electrolyte and energized for pre-intercalation to obtain a pre-intercalation electrode, where the electrolytic solution comprises organic solvent, water and inorganic salt; performing electrolytic stripping on the pre-intercalated electrode in the electrolyte according to a preset voltage and a preset current density to obtain graphene; providing a voltage/current signal feedback in the electrolysis circuit of the electrolytic stripping, during the electrolytic stripping process, monitoring the current density in real time according to the voltage/current feedback, and dynamically and adaptively adjusting the voltage value according to the monitored current density to keep the current density stable at a preset value. INDEPENDENT CLAIMS are included for: a graphene prepared by the above preparation method, having the lateral dimension of 1-50 μm, and the thickness of 0.5-10 nm; and a thermal management film comprising the graphene as raw material for preparation.