A continuous preparation system for graphene

Abstract

The invention provides a continuous graphene preparation system. The continuous graphene preparation system comprises a reaction unit and an atmosphere control unit. The reaction unit comprises a ithreaction area and an nth reaction area which are connected successively in a vertical direction, the reaction unit is capable of enabling oxidized graphene, with functional groups and metal impuritiesand / or nonmetallic impurities, to successively pass through the ith reaction area and the nth reaction area of the reaction unit to react by action of gravity, wherein n is a natural number which islarger than or equal to 2, and i can be any natural number smaller than n. The atmosphere control unit comprises a temperature control mechanism and a vacuum control mechanism which match with each other, the temperature control mechanism is capable of controlling a temperature of the nth reaction area at Tn and controlling a temperature of the ith reaction area at Ti. The continuous graphene preparation system has the advantages that the metal impurities and the nonmetallic impurities in graphene can be removed, a large amount of oxygen-containing functional groups carried in the graphene canbe removed at the same time, and hybridization defect of the graphene can be remedied.

Description

technical field [0001] The invention relates to the technical field of new material preparation, and more specifically, relates to a graphene continuous preparation system. Background technique [0002] In 2004, physicists Andre Heim and Konstantin Novoselov of the University of Manchester first separated single-layer graphene from graphite by mechanical exfoliation, and studied its quasi- Particle properties, and field effect properties. This discovery quickly triggered a graphene research boom all over the world. In just a few years, the research and application of graphene have developed vigorously. [0003] Graphene is a two-dimensional honeycomb network structure composed of carbon atoms. It is a surface material composed of a single layer of carbon atoms that can be directly peeled off from graphite. The arrangement of carbon atoms in graphene is the same as that of graphite. They all belong to the compound hexagonal crystal structure. On the two-dimensional plane, S...

AI Technical Summary

Problems solved by technology

On the one hand, the crystal structure of graphene prepared by redox method is easily destroyed in the process of oxidative intercalation, which leads to the increase of internal defects in graphene, which greatly affects the performance of graphene; On the one hand, there are still a large amount of metal and non-metallic impurities in the graphene produced by the redox method, which further affects the large-scale development and application of graphene; , high energy consumption, and inability to produce continuously will also affect the large-scale production of graphene

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