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Preparation method of graphene-carbon nano tube composite structure

A technology of carbon nanotube compounding and graphene compounding, which is applied in the direction of graphene, single-layer graphene, nano-carbon, etc., can solve the problem of poor conductivity, toughness and light transmittance, decreased conductivity of composite structures, and affecting the toughness of composite structures, etc. problems, to achieve the effect of low equipment requirements, excellent conductivity, and simple operation

Active Publication Date: 2012-11-28
TSINGHUA UNIV +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In the graphene-carbon nanotube composite structure obtained by the liquid phase method, since the graphene is dispersed in the composite structure in the form of a large number of fragments rather than the overall layer, the conductivity of the composite structure is reduced, and it also affects the overall composite structure. Toughness of the structure; due to the random distribution of carbon nanotubes in the composite structure, light cannot be effectively transmitted from the composite structure, that is, the light transmittance of the composite structure is reduced
Therefore, the graphene-carbon nanotube composite structure prepared by the liquid phase method cannot fully and effectively exert the characteristics of both graphene and carbon nanotubes, and has disadvantages such as poor electrical conductivity, toughness and light transmission.

Method used

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  • Preparation method of graphene-carbon nano tube composite structure
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  • Preparation method of graphene-carbon nano tube composite structure

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specific Embodiment 1

[0023] See figure 1 , the preparation method of the graphene-carbon nanotube composite structure 20 provided by the specific embodiment of the present invention comprises the following steps:

[0024] Step 1, providing a substrate 100 having a first surface 102 and a second surface 104 opposite to the first surface 102 .

[0025] The substrate 100 can be made of metal materials, such as copper, nickel, etc., or non-metallic materials, such as quartz plates, glass, plastics, tapes, etc. The first surface 102 of the substrate 100 may have an oxide layer. The length, width and thickness of the base body 100 are not limited and can be adjusted as required. The first surface 102 can be a plane or a curved surface. In this embodiment, the material of the substrate 100 is a silicon wafer. The silicon wafer is a cuboid structure with a thickness of 12.5 microns to 50 microns, preferably 25 microns, and a side length of 4 cm. The first surface 102 is a square plane with a side len...

specific Embodiment 2

[0073] See Figure 11 , the preparation method of the graphene-carbon nanotube composite structure 20 provided in the second embodiment of the present invention comprises the following steps:

[0074] Step 1, providing a substrate 100 having a first surface 102 and a second surface 104 opposite to the first surface 102 .

[0075] Step 2. At least one graphene film 106 is provided, and the graphene film 106 is formed or disposed on the first surface 102 of the substrate 100 .

[0076] Step 3, coating the protective layer 108 on the graphene film 106 on the first surface 102 of the substrate 100 .

[0077] Step 4, removing the matrix 100 to obtain a protective layer-graphene composite structure 40 .

[0078] Step 5, at least one carbon nanotube layer 110 is provided, the protective layer-graphene composite structure 40 is compounded with the carbon nanotube layer 110, and the graphene film 106 is in contact with the carbon nanotube layer 110 to obtain Protective layer-graphen...

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Abstract

The invention provides a preparation method of a graphene-carbon nano tube composite structure, comprising the following steps of: providing a substrate, wherein the substrate is provided with a first surface and a second surface which is opposite to the first surface; providing at least one graphene membrane, wherein the graphene membrane is formed or arranged on the first surface of the substrate; providing at least one carbon nano tube layer; compounding the substrate and the graphene membrane with the carbon nano tube layer; contacting the graphene membrane with the carbon nano tube layer to obtain a substrate-graphene-carbon nano tube composite structure; and removing the substrate to obtain the graphene-carbon nano tube composite structure.

Description

technical field [0001] The invention relates to a method for preparing a graphene composite structure, in particular to a method for preparing a graphene composite structure based on carbon nanotubes. Background technique [0002] Graphene [see literature: K. S. Novoselov, et al. Electric field effect in atomically thin carbon films. Science, 2004, 306(5696): 666-669] and carbon nanotubes [please refer to literature: S. Iijima. Helical microtubules of graphitic carbon. Nature, 1991, 354(6348): 56-58] are allotropes of carbon and have special physical properties. Graphene is a new carbonaceous material that is tightly packed into a two-dimensional briquette-like lattice structure by a single layer of carbon atoms. It has excellent electrical and thermal properties, and its room temperature electron mobility can reach 15,000 cm 2 V -1 S -1 , thermal conductivity up to 3000Wm -1 K -1 . Carbon nanotubes are seamless hollow tubes rolled from graphene, with a length of sever...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
CPCC01B2204/04C01B31/02C01B2204/02C01B31/0469C01B2204/20C01B2204/24B82Y30/00B82Y40/00C01B32/19
Inventor 姜开利林晓阳肖林范守善
Owner TSINGHUA UNIV
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