Three-dimensional graphene/metal line or metal wire composite structure and preparation method thereof

A composite structure and metal wire technology, applied in the field of nanomaterials, can solve the problems of many structural defects in graphene, and achieve the effects of simple preparation method, excellent corrosion resistance, and easy process

Inactive Publication Date: 2012-07-11
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, there are documents disclosing the use of low-pressure chemical vapor deposition, but the graphene prepared by the method has many structural defects.
At present, there is no report on the deposition of three-dimensional graphene / metal wire or metal wire composite structure directly on metal wire or wire as a catalyst template under normal pressure conditions.

Method used

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  • Three-dimensional graphene/metal line or metal wire composite structure and preparation method thereof
  • Three-dimensional graphene/metal line or metal wire composite structure and preparation method thereof
  • Three-dimensional graphene/metal line or metal wire composite structure and preparation method thereof

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preparation example Construction

[0027] The preparation method of the three-dimensional graphene / metal wire or metal wire composite structure and the graphene tube of the present invention specifically includes the following steps: using the metal wire or metal wire as a catalytic template, putting it into a chemical vapor deposition reaction chamber, introducing hydrogen and protective gas, After heating to a reaction temperature of 400-1200°C, keep the temperature constant for 0-60 minutes, and introduce a carbon source for reaction. During the reaction, the protective gas flow rate is 1-1000 sccm, the hydrogen flow rate is 1-500 sccm, and the gaseous carbon source is 1-200 sccm. The reaction time ranges from 1 minute to 20 hours; during the reaction process, the gas flow rate is maintained, and after the reaction is completed, the cooling rate is controlled at 10-300°C / min, and cooled to room temperature to obtain a three-dimensional graphene / metal wire or metal wire composite structure.

[0028] Further, t...

Embodiment 1

[0044] (1) Nickel wire is used as the catalytic template, and the average diameter of the nickel wire is 25 μm. After ultrasonic cleaning with ethanol, acetone and isopropanol, put the nickel wire into the chemical vapor deposition reaction furnace, pass through 100sccm hydrogen and 100sccm argon, start heating to 1000°C after 60 minutes, and pass 5sccm methane after 30 minutes at constant temperature, and react Time 30min, stop feeding methane after the reaction is over, turn off the electric furnace, cool to room temperature rapidly, obtain graphene / nickel wire composite structure, scanning electron microscope photo is as follows figure 1 shown.

[0045] (2) Place the product prepared in step (1) in an acetone solution of 4wt% polymethyl methacrylate, take it out and dry it at 100°C for 3 hours to deposit a layer of polymethyl methacrylate on its surface, and put 100ml of In 5M nitric acid solution for 4h, remove the nickel wire, and then put it into the acetone solution to...

Embodiment 2

[0047] The preparation method is basically the same as in Example 1, except that in step (1), a nickel wire with a diameter of 100 μm is used as a catalytic template to obtain a three-dimensional graphene tube with 10-20 layers, and the graphene structure is complete and free of defects.

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Abstract

The invention provides a three-dimensional graphene/metal line or metal wire composite structure and a preparation method thereof. According to the invention, metal lines or metal wires are adopted as a catalyst template; with a chemical vapor deposition method, a carbon source directly form graphene coatings on the outer surfaces of the metal lines, such that the graphene/metal line or metal wire composite structure is formed. The diameters of the metal lines or metal wires are 10nm-5000mum. The layer number of graphene is 1-100. The three-dimensional graphene/metal line or metal wire composite structure or graphene tube provided by the invention has excellent electric conductivity and corrosion resistance. The technology provided by the invention is simple, and the process is easy to control. The composite structure is advantaged in excellent electric conductivity and low preparation cost, and is suitable to be used in fields of solar energy devices, storage batteries, conductive composite materials, and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to a three-dimensional graphene / metal wire or metal wire composite structure and a preparation method thereof. Background technique [0002] Graphene is a two-dimensional (2D) periodic honeycomb lattice structure composed of carbon six-membered rings, which is the basic unit for constructing carbon-based materials such as 0D fullerenes, 1D carbon nanotubes and 3D graphite. The unique crystal structure of graphene makes it have excellent properties, such as high thermal conductivity, high mechanical strength, peculiar electrical properties and optical properties, so it has important theoretical research value, and its unique structure and excellent performance may make it Significant practical applications have been obtained in many fields, providing new powerful growth points for future economic and social development (K.S. Novoselov, et al. Science 2004, 306, 666.). Fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C16/26C30B29/02C30B29/62B82Y40/00B82Y30/00
Inventor 黄富强毕辉林天全
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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