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Device and method for preparing graphene by laser shocking carbon material in liquid medium

A technology of liquid medium and laser shock, applied in the direction of graphene, nano-carbon, etc.

Active Publication Date: 2020-03-31
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, tiny graphene cannot really exert its superior properties. Therefore, research on the preparation of large-scale and high-efficiency graphene is necessary

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  • Device and method for preparing graphene by laser shocking carbon material in liquid medium

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Embodiment Construction

[0018] The technical solution of the present invention will be described in more detail below in conjunction with the accompanying drawings, but it is not intended to limit the present invention.

[0019] like figure 1 As shown, it includes a laser generating system and a reaction vessel 27 positioned below the laser generating system. Lead screws 25 in the Y-axis direction are provided on both sides of the bottom of the reaction vessel 27, and a support plate 17 is installed on the lead screws 25. The support Driven by the second motor 21, the plate 17 can move back and forth in the Y-axis direction on the lead screw 25. The support plate 17 is equipped with a second rotating shaft 24 and a first rotating shaft 18, and on the second rotating shaft 24 A copper foil 23 is wound, and a first motor 20 is installed on the first rotating shaft 18 , and the copper foil 23 moves from the second rotating shaft 24 to the first rotating shaft by the rotation of the first motor 20 18, t...

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Abstract

The invention relates to a device and a method for massively preparing graphene from a carbon material in a laser shock liquid medium. The device comprises a system for preparing graphene through laser, and a system for transferring the graphene on different substrates. Laser generated by a high-power pulse laser generator is reflected by a light mirror, the obtained laser beam is vertically focused in a proper position of the upper surface of a graphite block target material in an aqueous solution medium, a direct current electric field with the voltage being direct current 24 V is applied totwo ends of the graphite target material, one electrode of the electric field is a copper plate fixed at one end of a reaction tank, the other end of the reaction tank adopts copper foil, a motor drives the copper foil to move at a constant speed, a high-temperature and high-voltage plasma is formed between the graphite and the aqueous medium at the moment of shocking the graphite with the laser,the plasma adheres to the surface of the copper foil under the driving of the electric field, the plasma is continuously adhered, and the copper foil continuously moves in order to finally achieve the purpose of continuous massive preparation of the graphene.

Description

technical field [0001] The invention belongs to the high-efficiency preparation of graphene technology, in particular to a device and method for preparing graphene by laser shocking carbon materials in a liquid medium. Background technique [0002] Graphene has attracted the attention of researchers in the past ten years. It is a new type of carbon nanomaterial with only a single atomic layer thickness, and the thickness of a single layer is only 0.3554nm. Graphene not only has the unique properties of nanomaterials, but also has extremely high hardness. It is the strongest material we know in the world today, with a tensile strength of 125GPa and an elastic modulus as high as 1.1TPa. Moreover, the thermal conductivity of graphene under normal environmental conditions is 5x103W / (mK), which is an order of magnitude higher than that of copper under the same conditions. Graphene has excellent optical transparency (light absorption rate is only 2.3%), high electrical conductivi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/19
Inventor 任旭东贾唯马服辉王冕
Owner JIANGSU UNIV
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