Graphene grinding and stripping device, graphene production system and production method

A technology of peeling device and production system, applied in the field of graphene production, can solve the problems of uneven pressure applied to graphite, limited shear force, insufficient powder shear force, etc., to maintain the natural plane size, reduce structural defects or The effect of less chipping, structural defects and burrs

Active Publication Date: 2015-03-11
江苏碳谷二维世界科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 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 obtained product has more "burrs" on the edges and small crystal size
[0010] During

Method used

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  • Graphene grinding and stripping device, graphene production system and production method
  • Graphene grinding and stripping device, graphene production system and production method
  • Graphene grinding and stripping device, graphene production system and production method

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Embodiment 1

[0052] The present invention relates to a graphene grinding and stripping device 1 and a graphene production system, and also relates to a graphene production method.

[0053] The graphene production system, such as figure 1 As shown, the graphene grinding and peeling device 100, the storage tank 200, the centrifuge 300, the vacuum filter device 400 and the freeze-drying device 500 are included successively along the process sequence; the graphene grinding and peeling device 100 is used for grinding in the direction of parallel graphite sheets For exfoliating graphene, the storage tank 200 is used to collect and leave the graphene grinding and peeling device 100 to discharge the product after processing, and the centrifuge 300 is used to centrifuge the upper layer suspension in the storage tank 200 to separate the exfoliated graphene and unexfoliated graphite The vacuum filtration device 400 is used to filter and wash the supernatant liquid obtained after centrifugation by the...

Embodiment 2

[0063] On the basis of embodiment 1, as an improvement, in this embodiment, as Figure 6 and Figure 7 As shown, a frosted part 20 is also provided on the lower end surface of the upper grinding disc 2 , and the grinding part 20 is opposite to the groove 11 of the lower grinding disc 1 . The grinding part 20 has increased the frictional force to the graphite flakes entering the groove. By setting the grinding part 20, the stone grinding sheet layer can be spread faster and better at the oil-water interface, which further ensures the parallel grinding of the graphite flakes and makes the peeling Graphene better maintains the natural size of the graphite sheet surface.

[0064] The frosted part 20 can also be changed into other structures that can moderately increase the frictional force on the graphite sheet, such as a brush.

Embodiment 3

[0066] On the basis of Embodiment 1, as an improvement, in the present embodiment, the water inlet pipe 13 is connected to the water storage tank 600, and the feed hopper 9 is connected to a dispersion tank 700 for dispersing graphite in the oily solvent, such as Figure 8 shown.

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Abstract

The invention discloses a graphene grinding and stripping device which comprises an upper grinding disc, a lower grinding disc, a driving mechanism for driving the upper grinding disc to rotate, and a material collection mechanism for collecting a product after grinding, wherein the upper grinding disc and the lower grinding disc are matched with each other; a horizontal contact surface is formed between the upper grinding disc and the lower grinding disc, the upper grinding disc is provided with an upper feed inlet, the lower grinding disc is provided with a lower feed inlet, the upper feed inlet and the lower feed inlet are both connected with the contact surface between the upper grinding disc and the lower grinding disc, and the lower end of the lower feed inlet is in sealed connection with one water inlet tube; moreover, the upper end face of the lower grinding disc is provided with a groove, and an annular region formed by rotary surrounding of the lower end of the upper feed inlet is surrounded in the groove. The graphene grinding and stripping device can realize large-size successful stripping of graphene. The invention also relates to a graphene production system containing the graphene grinding and stripping device and a graphene production method.

Description

technical field [0001] The invention relates to the technical field of graphene production, in particular to a graphene grinding and stripping device and a graphene production system, and also to a graphene production method. Background technique [0002] Graphene is a sheet-like two-dimensional material in which carbon atoms are represented by sp 2 The hybrid orbitals form a hexagonal honeycomb lattice structure. 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, oligola...

Claims

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Application Information

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IPC IPC(8): C01B31/04
Inventor 戴加龙
Owner 江苏碳谷二维世界科技有限公司
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