Copper-graphene composite material and method for preparation of graphene film on copper-based metal surface

A composite material and graphene technology, which is applied to copper-metal composite materials and their preparation, and the preparation of graphene films on copper-based metal surfaces can solve the problems of complex process, difficult control, and high cost.

Inactive Publication Date: 2012-10-17
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, chemical vapor deposition (CVD) can meet the large-scale preparation of high-quality, large-area graphene, and has been widely used, but the method is high in cost, complicated in process, and difficult to control.

Method used

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  • Copper-graphene composite material and method for preparation of graphene film on copper-based metal surface
  • Copper-graphene composite material and method for preparation of graphene film on copper-based metal surface
  • Copper-graphene composite material and method for preparation of graphene film on copper-based metal surface

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Embodiment 1: A novel preparation method of graphene thin film, utilizes oxidation-reduction method in combination with pulling coating method to prepare graphene on copper surface.

[0017] Take by weighing 3g particle size and be the graphite powder of 200 mesh, after putting into beaker, add 90ml concentration and be the concentrated H of 98wt%. 2 SO 4 , and kept stirring on a magnetic stirrer, slowly added KMnO 4 12g of powder, stirred in an ice bath for 1.5h, then raised the temperature to 30°C, stirred in a constant temperature water bath for 1h, then raised the temperature to 70°C. After 15 minutes, slowly add 250ml of deionized water to the reaction solution with a pear-shaped bottle for 1.5 hours. After 30 minutes of reaction, quickly add 500ml of deionized water and 30ml of H 2 o 2 , the solution was golden yellow. After stirring and standing still, remove the solid solution in the lower layer, wash it with dilute HCl 5wt%, centrifuge it, and dry it at 80°...

Embodiment 2

[0023] Embodiment 2: A novel preparation method of graphene film, which utilizes redox method in combination with pull coating method to prepare graphene on copper surface.

[0024] Weigh 3g of natural graphite flakes, put them into a beaker, add 120ml concentration of 98wt% concentrated H 2 SO 4 , and kept stirring on a magnetic stirrer, slowly added KMnO 4 15g of powder was stirred on an ice bath for 1.5h, then the temperature was raised to 40°C, and after stirring in a constant temperature water bath for 1h, the temperature was raised to 60°C. After 15 minutes, slowly add 250ml of deionized water to the reaction solution with a pear-shaped bottle for 1.5 hours. After 30 minutes of reaction, quickly add 500ml of deionized water and 40ml of H 2 o 2 , the solution was golden yellow. After stirring and standing still, remove the solid solution in the lower layer, wash it with dilute HCl 5wt%, centrifuge it, and dry it at 80°C to obtain graphite oxide (brown black), grind it...

Embodiment 3

[0029] Embodiment 3: A novel preparation method of graphene film, which utilizes redox method in combination with pull coating method to prepare graphene on copper surface.

[0030] Take by weighing 3g particle size and be the graphite powder of 200 mesh, after putting into beaker, add 90ml concentration and be the concentrated H of 98wt%. 2 SO 4 , and kept stirring on a magnetic stirrer, slowly added KMnO 4 12g of powder, stirred in an ice bath for 1.5h, then raised the temperature to 30°C, stirred in a constant temperature water bath for 1h, then raised the temperature to 70°C. After 15 minutes, slowly add 250ml of deionized water to the reaction solution with a pear-shaped bottle for 1.5 hours. After 30 minutes of reaction, quickly add 500ml of deionized water and 30ml of H 2 o 2 , the solution was golden yellow. After stirring and standing still, remove the solid solution in the lower layer, wash it with dilute HCl 5wt%, centrifuge it, and dry it at 80°C to obtain grap...

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Abstract

The invention discloses a copper-graphene composite material and a method for preparation of a graphene film on a copper-based metal surface. The method comprises: first utilizing a strong oxidizing agent to fully oxidize graphite to prepare a graphene oxide solution; and then preparing a graphene oxide coating of certain thickness on a copper sheet surface by a Czochralski method, and finally making use of oxidation reduction to prepare the graphene film. The method of the invention combines the oxidation reduction method with the Czochralski coating method to prepare the graphene film on a copper surface, wherein the oxidation reduction method is characterized by simple principle, convenient operation, low cost, and ability to prepare a great amount of graphene, and the Czochralski coating method has the advantages of simple equipment, less investment, and is a good method for preparation of high performance films. The coated film has a high degree of uniformity, uniform particle size, and good activity. Being convenient to operate, the method provided in the invention has the ability to prepare films of complex shapes and large areas, and is easy to realize industrialization.

Description

technical field [0001] The invention relates to a copper-metal composite material and a preparation method thereof, more specifically, to a method for preparing a graphene film on a copper-based metal surface, which is mainly used in the field of corrosion protection. Background technique [0002] Graphene is a hexagonal honeycomb-like two-dimensional structure composed of a single layer of carbon atoms. It is the basic material for other dimensional graphite materials. It can be wrapped to form zero-dimensional fullerenes, rolled up to form one-dimensional carbon nanotubes, and layered to form 3D graphite. Since Giem and Novoselov of the University of Manchester in the United Kingdom prepared graphene by tape method, it has caused a sensation and great interest in the physics and chemistry circles. This special structure of graphene makes it exhibit excellent mechanical properties, thermodynamic properties and electrical properties, and its theoretical specific surface are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C01B32/19
Inventor 余亮亮崔振铎朱胜利李朝阳杨贤金
Owner TIANJIN UNIV
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