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Method for preparing graphene by arc method

A technology of graphene and arc method, which is applied in the field of graphene preparation by arc method, can solve the problems of low production capacity and large-scale industrialization, and achieve the effects of improving efficiency, good quality and high purity

Active Publication Date: 2020-11-06
江苏清大际光新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the lower production capacity of the above method is an important factor restricting its large-scale industrialization, and it is still a challenge to use the arc method to prepare high-quality graphene on a large scale.

Method used

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  • Method for preparing graphene by arc method
  • Method for preparing graphene by arc method
  • Method for preparing graphene by arc method

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Use arc method to prepare the equipment of graphene, described equipment comprises columnar reaction chamber, cathode and anode graphite rod, graphene, gas input pipeline. Wherein the distance between the cathode and cathode graphite rods is 3mm. The graphene comprises a collection push-pull positioned at the top of the columnar reaction chamber, a graphene collector positioned outside the columnar reaction chamber, and a cooling jacket set in the upper region of the columnar reaction chamber; the collection push-pull It comprises a push-pull rod and a hollow annular push plate, and a central connection of three connecting ribs of the push-pull rod and the hollow annular push plate. The outer diameter of the circular push plate is 0.1 mm smaller than the inner diameter of the columnar reaction chamber, and the inner diameter of the annular push plate is 70 mm smaller than the outer diameter. The collector is two symmetrically placed collector I and collector II, and th...

Embodiment 2

[0047] Use arc method to prepare the equipment of graphene, described equipment comprises columnar reaction chamber, cathode and anode graphite rod, and anode and cathode graphite rod automatic delivery part, graphene, gas input pipeline. Wherein the distance between the cathode and anode graphite rods is 2mm. The graphene comprises a collection push-pull positioned at the top of the columnar reaction chamber, a graphene collector positioned outside the columnar reaction chamber, and a cooling jacket set in the upper region of the columnar reaction chamber; the collection push-pull It comprises a push-pull rod and a hollow annular push plate, and a central connection of three connecting ribs of the push-pull rod and the hollow annular push plate. The outer diameter of the circular push plate is 0.2 mm smaller than the inner diameter of the columnar reaction chamber, and the inner diameter of the annular push plate is 50 mm smaller than the outer diameter. The collectors are t...

Embodiment 3

[0050] Other conditions and parameter are identical with embodiment 1, and difference is, the outlet of regulating each pipeline gas is apart from intersection point 100mm between cathode and anode. The production capacity of graphene reaches 5.17kg per hour. After testing, the purity of graphene is 99.9%.

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Abstract

The invention provides a method for preparing graphene by an electric arc method. Graphene production equipment is used, wherein the main body (1) of the equipment comprises a columnar reaction chamber (2), a chamber inner wall (18), cathode and anode graphite rods (3 and 4), a graphene collection assembly and gas input pipelines, wherein after discharging, gas is conveyed to a gap between the cathode graphite rod and the anode graphite rod through the gas input pipelines, and the gas comprises hydrogen, helium and / or argon and carbon-containing gas. The preparation method comprises the following steps that in a nitrogen-hydrogen atmosphere, a graphite rod is used as a cathode and an anode, the graphite rod horizontally and oppositely extends into a columnar reaction chamber, a plurality of gas input pipelines inwards face a gap between a cathode graphite rod and an anode graphite rod, input gas is gathered between the cathode graphite rod and the anode graphite rod, and graphene is generated through direct-current arc discharge. According to the invention, gas is conveyed to a gap of graphite rods through a gas input pipeline, so that the graphene production efficiency can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of carbon nanomaterial preparation, in particular to a method for preparing graphene by an arc method. Background technique [0002] Graphene is a new type of carbon nanomaterial after fullerene and carbon nanotube. Excellent and special lamellar structure, with many excellent properties. It has a wide range of applications in many fields such as materials, biology, electrochemical energy storage, organic photovoltaic materials, heat generation, and transparent conductive sheets. [0003] Mass production of high-quality graphene is an important factor restricting the price and production of graphene. The preparation methods of graphene mainly include exfoliation method (microcomputer exfoliation method, electrochemical exfoliation method), chemical synthesis method, epitaxial growth method, chemical vapor deposition method, etc. [0004] Arc discharge is an independent gas self-sustaining discharge phenom...

Claims

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Application Information

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IPC IPC(8): C01B32/184B01J19/08
CPCB01J19/088C01B2204/30C01B32/184
Inventor 孙福伟孙清友
Owner 江苏清大际光新材料有限公司
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