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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  • Abstract
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  • 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 indu

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
Comparison scheme
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Example Embodiment

[0043] Example 1

[0044] An equipment for preparing graphene using the arc method, the equipment includes a cylindrical reaction chamber, cathode and anode graphite rods, graphite ene, and a gas input pipeline. The distance between the anode and cathode graphite rods is 3mm. The graphene includes a collecting push-pull device located at the top of the cylindrical reaction chamber, a graphene collector located outside the cylindrical reaction chamber, and a cooling jacket sleeved on the upper region of the cylindrical reaction chamber; the collecting push-pull device The push-pull rod and the hollow annular push plate are included, and the push-pull rod and the hollow annular push plate are centrally connected by 3 connecting ribs. 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 collectors are two symmetrically ...

Example Embodiment

[0046] Example 2

[0047] An equipment for preparing graphene using the arc method, the equipment includes a columnar reaction chamber, cathode and anode graphite rods, and anode and cathode graphite rod automatic transport components, graphene, and gas input pipelines. The distance between the anode and cathode graphite rods is 2mm. The graphene includes a collecting push-pull device located at the top of the cylindrical reaction chamber, a graphene collector located outside the cylindrical reaction chamber, and a cooling jacket sleeved on the upper region of the cylindrical reaction chamber; the collecting push-pull device The push-pull rod and the hollow annular push plate are included, and the push-pull rod and the hollow annular push plate are centrally connected by 3 connecting ribs. The outer diameter of the circular push plate is 0.2 mm smaller than the inner diameter of the cylindrical reaction chamber, and the inner diameter of the annular push plate is 50 mm smaller t...

Example Embodiment

[0049] Example 3

[0050] Other conditions and parameters are the same as in Example 1, except that the gas outlet of each pipeline is adjusted to be 100 mm from the intersection between the cathode and the 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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