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A kind of preparation method of graphene/carbon nanotube composite material

A technology of carbon nanotubes and composite materials, applied in the direction of carbon nanotubes, graphite, nanocarbon, etc., can solve the problems of difficult dispersion and uniform compounding of carbon tube bundles, so as to promote industrial application, easy to assemble into paper, and improve the cost paper effect

Inactive Publication Date: 2017-03-22
TIANJIN NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to provide and the method of graphene / carbon nanotube composite material, it is characterized in that improving graphene / carbon tube composite homogeneity, has solved the difficult dispersion of carbon tube bundle, is difficult to realize the technical problem of uniform composite with graphene

Method used

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  • A kind of preparation method of graphene/carbon nanotube composite material
  • A kind of preparation method of graphene/carbon nanotube composite material
  • A kind of preparation method of graphene/carbon nanotube composite material

Examples

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Embodiment 1

[0028] To synthesize double-walled carbon nanotubes, weigh 0.25 g of graphite and 1.5 g of potassium permanganate, mix them, put them into a three-necked flask, add 10 ml of phosphoric acid and 90 ml of sulfuric acid successively, put them in a water bath at 50 ºC, stir them magnetically for 4 h, and add 0.05 g of bis Wall carbon nanotubes, water bath 50ºC, magnetic stirring for 6h, guide the mixed solution onto ice cubes, dissolve the ice cubes, add 5 ml of hydrogen peroxide dropwise, centrifuge to obtain a graphene oxide / carbon nanotube suspension, settle and separate, add 10 Wash with 800ml of % hydrochloric acid and 1200ml of distilled water until the pH of the solution reaches 5-7, centrifuge to obtain graphene oxide / double-walled carbon tubes, dry, and reduce in 1000ºC argon flow to obtain graphene / double-walled carbon nanotube composites.

Embodiment 2

[0030] Same as Example 1, changing the amount of phosphoric acid and sulfuric acid to 10 ml phosphoric acid and 50 ml sulfuric acid to obtain a graphene / double-walled carbon nanotube composite material.

Embodiment 3

[0032] Same as Example 1, changing the amount of phosphoric acid and sulfuric acid to 10 ml phosphoric acid and 100 ml sulfuric acid to obtain a graphene / double-walled carbon nanotube composite material.

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Abstract

The invention discloses a method of a graphene / carbon nanotube composite material. The method comprises the following steps: treating graphite serving as a raw material with a strong oxidant expansion separation method to obtain graphene oxide; adding carbon nanotubes; dispersing the carbon tubes in an oxidizing way; and performing the treatment of separation, washing, reduction and the like to obtain the graphene / carbon nanotube composite material, wherein the carbon nanotubes are single-wall carbon nanotubes, double-wall carbon nanotubes and multi-wall carbon nanotubes. The method has the advantages that graphene preparation is combined with a carbon tube compounding process, and a strong oxidant left in the preparation of graphene is used for dispersing the carbon nanotubes in an oxidizing way, so that the compounding cost can be reduced, and the efficiency is increased. In particular for carbon nanotubes gathered into bundles, the strong oxidant left in the preparation of graphene can be used for performing oxidation intercalation among the tube walls of carbon tube bundles to disperse the carbon tubes, so that uniform compounding of the carbon tubes with graphene is realized.

Description

[0001] This patent application is funded by Tianjin Applied Basic and Frontier Technology Research Program (Natural Science Foundation) Key Funding Project (13JCZDJC33900), General Project of National Natural Science Foundation of China (51272176) and Tianjin Normal University Startup Fund (5RL128). technical field [0002] The invention relates to a graphene / carbon nanotube composite material method, and belongs to the technical field of nanocarbon material preparation. Background technique [0003] Graphene is a two-dimensional nanomaterial composed of a single layer of carbon atoms. It has a large specific surface area, high conductivity, good mechanical properties and other functional properties. It has a wide range of applications, such as electrode materials for lithium batteries and supercapacitors. However, the two-dimensional layered structure of graphene has a strong van der Waals force between layers, and it is easy to stack during use, resulting in a decrease in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/583H01M4/587H01G11/36C01B31/02C01B31/04B82Y30/00
CPCB82Y30/00C01B32/158C01B32/20H01G11/36H01M4/362H01M4/583H01M4/587H01M2004/021Y02E60/10
Inventor 冯建民李德军
Owner TIANJIN NORMAL UNIVERSITY
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