A continuous production system for graphene with low impurity content

Abstract

The invention provides a continuous production system for graphene with low impurity content, the production system includes a graphene oxide purification device, a low-layer graphene oxide preparation device and a reduction device, wherein the graphene oxide purification device includes a first Feed port, tank body, first partition, second partition, ultrasonic generating unit and first discharge port; the low-layer graphene oxide preparation device is used to freeze the purified graphene obtained by the graphene oxide purification device Drying treatment, including a hydrogel forming unit, a low-temperature drying unit and a conveying mechanism; the reducing device includes reducing the graphene oxide with a second layer number obtained from a low-layer graphene oxide preparation device, including a silo and a traveling mechanism , reaction unit and atmosphere control unit. The system of the invention has simple structure and high production efficiency, and can realize continuous production of graphene.

Description

Technical field [0001] The present invention relates to the field of graphene preparation, and more particularly to a low impurity content graphene continuous production system. Background technique [0002] At present, the mainstream graphene preparation method has mechanical stripping method, oxidation method, epitaxial growth method, chemical meteorological deposition method, etc. The oxidation method is low, the production equipment is simple, the single output is the largest, and the product layer is concentrated. The advantages of uniform horizontal dimensions have become the most common method of industrial production. On the one hand, graphene prepared by redox reduction method, since its own crystal structure is easily destroyed during the oxidation insertion, resulting in an increase in the internal defect of graphene, which affects the performance of graphene; On the one hand, the graphene produced by the redox reduction method also has a large number of metals, non-me...

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 lot of metal and non-metal impurities in graphene produced by redox method, which further affects the large-scale development and application of graphene.

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