Graphene preparation method

Abstract

The invention belongs to the technical field of graphene production, in particular to a graphene preparation method. A graphene preparation device used in the method comprises a dithering module and acrushing module, which are both located in a closed bin, wherein the dithering module is located below the crushing module and is fixedly mounted on the inner wall of a side plate; the crushing module is fixedly mounted on the lower surface of an upper bottom plate; the dithering module is used for raising graphite particles, and the crushing module is used for crushing the raised graphite particles; the upper bottom plate is rotatably mounted on the upper end of the side plate, and cooperates with a motor I to drive the crushing module to rotate; a sucker is arranged at the lower end of a storage cover and is fixedly mounted on the upper surface of a lower bottom plate through an electric push rod I; a rubber pad is fixedly mounted on the lower surface of a mounting block I. The method is mainly used for preparing graphene, and can be used for fully crushing graphene to improve the production efficiency of graphene.

Description

technical field [0001] The invention belongs to the technical field of graphene production, in particular to a graphene production and preparation method. Background technique [0002] Graphene is a sheet-like two-dimensional material in which carbon atoms form a hexagonal honeycomb lattice structure with sp2 hybrid orbitals. This special two-dimensional structure causes graphene to exhibit various special properties, such as high strength, high hardness, high thermal conductivity and electrical conductivity; due to these structural characteristics and performance characteristics, graphene is known as the Layers, transparent bendable electronic components, ultra-large capacitors, etc. are the most promising potential materials. What needs to be added is that, strictly speaking, graphene is a single-layer sheet; however, due to the difficulty of preparing single-layer graphene, oligolayer graphene with similar properties is generally also classified into the category of grap...

AI Technical Summary

Problems solved by technology

Among them, conventional grinding refers to grinding graphite in a mortar grinder. The disadvantages are: first, the shear force comes from the friction force caused by pressure, and the excessive pressure makes it difficult for the motor to drive the pestle body to rotate, which limits the shear force. If the pressure is too small, it is difficult to shear and peel off; secondly, the shearing efficiency is low, and increasing the amount of pressed powder will lead to insufficient shearing force of some powders; thirdly, the uneven pressure exerted by the pestle on the graphite is prone to overgrinding, and the Applying pressure to graphite will cause structural defects in graphene, and even shatter graphene after exfoliation, so that the edge of the obtained product will have burrs and the crystal size will be small

[0003] There are also technical solutions for graphene grinding and stripping devices in the prior art. For example, a Chinese patent with application number 201710952978.1 discloses a graphene production equipment, including a microwave cavity, a microwave transmitter, a vibration block, a support plate, Place the dish, spring, feeding hopper and finished product collection bottle. There is a feeding hopper on the left side of the top of the microwave cavity, and the feeding hopper runs through the upper wall of the microwave cavity, and there is a seal A placer is provided under the outlet of the feeding hopper, a vibrating block is provided under the placer, and two symmetrical long grooves are opened on the upper surface of the vibrating block. Although this technical scheme can carry out oxidation-reduction reaction on graphene , but this technical solution cannot pulverize graphite particles, so that the production efficiency of graphene is low, which limits the use of this invention

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