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Graphene-metal composite film and manufacturing method thereof

A metal composite, graphene film technology, used in cable/conductor manufacturing, conductive layers on insulating carriers, electrical components, etc., can solve the problems of difficult electrical connection, overheating of nodes, difficult wetting, etc., and achieve connection stability. Strong, improve the bonding strength, the effect of excellent conduction performance

Active Publication Date: 2022-07-29
GUANGDONG MORION NANOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Graphene is a pure carbon material, which is essentially different from metals in terms of chemical bonds. The surface of graphene film is a pure covalent bond, while metal exists in the form of ionic bonds, which makes it difficult for metals to be realized on the surface of graphene film. Ideal wetting. In addition, graphene and metals have different elastic modulus and thermal expansion coefficients, which also make it difficult to achieve a stable electrical connection with metals in macroscopic applications, affecting their joint performance.
For example, currently in the field of electro-thermal conversion applications, the electrical connection between the graphene film and the metal is usually combined in the form of an aluminum rivet. Although this connection method can achieve electrical conduction, it usually has poor contact at the joint point and biased resistance. Large, problems such as junction overheating under high current conditions

Method used

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  • Graphene-metal composite film and manufacturing method thereof
  • Graphene-metal composite film and manufacturing method thereof
  • Graphene-metal composite film and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation method of a graphene-metal composite film proposed by the present invention, the specific steps are as follows:

[0035] (1) After carbonizing the graphene oxide film after suction filtration and coating, transfer it to a graphitization furnace protected by an inert gas at 3100 ° C for graphitization treatment, and place the obtained graphene film under a 120-ton flat hydraulic press. Calendering treatment, calendering time of 2min, obtains a graphene film with a thickness of 30μm with good compactness;

[0036] (2) Cut the graphene film selected in step (1) into a 5cm*5cm square, fix it with a clamp and flatten it, and then transfer it to a high-pressure plasma bombardment cleaning apparatus for the next cleaning process. Under a nitrogen atmosphere, the surface of the graphene film was bombarded with nitrogen plasma for 10 min;

[0037] (3) Immediately after the plasma bombardment cleaning, the sample was transferred to the magnetron sputtering instru...

Embodiment 2

[0043] The difference between this example and Example 1 is that no nickel plating is performed, and other steps are the same as those of Example 1, and the purpose is to study the effect of pure copper plating on the metal welding effect. Specific steps are as follows:

[0044] (1) After carbonizing the graphene oxide film after suction filtration and coating, transfer it to a graphitization furnace protected by an inert gas at 3100 ° C for graphitization treatment, and place the obtained graphene film under a 120-ton flat hydraulic press. Calendering treatment, calendering time of 2min, obtains a graphene film with a thickness of 30μm with good compactness;

[0045] (2) Cut the graphene film selected in step (1) into a 5cm*5cm square, fix it with a clamp and flatten it, and then transfer it to a high-pressure plasma bombardment cleaning apparatus for the next cleaning process. Under a nitrogen atmosphere, the surface of the graphene film was bombarded with nitrogen plasma f...

Embodiment 3

[0050] The difference between this example and Example 1 is that the nickel plating layer in step (5) is 1 μm thick, and the purpose is to explore the influence of the thickness of the nickel plating layer on the welding effect with the metal. Specific steps are as follows:

[0051] (1) After carbonizing the graphene oxide film after suction filtration and coating, transfer it to a graphitization furnace protected by an inert gas at 3100 ° C for graphitization treatment, and place the obtained graphene film under a 120-ton flat hydraulic press. Calendering treatment, calendering time of 2min, obtains a graphene film with a thickness of 30μm with good compactness;

[0052] (2) Cut the graphene film selected in step (1) into a 5cm*5cm square, fix it with a clamp and flatten it, and then transfer it to a high-pressure plasma bombardment cleaning apparatus for the next cleaning process. Under a nitrogen atmosphere, the surface of the graphene film was bombarded with nitrogen plas...

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Abstract

The invention aims to provide a graphene-metal composite film and a manufacturing method thereof. The graphene-metal composite film comprises a graphene film, a first metal coating and a second metal coating, wherein the first metal coating is formed on one side of the graphene film through magnetron sputtering or electroplating, and the second metal coating is formed on the side, away from the graphene film, of the first metal coating through magnetron sputtering or electroplating. The specific preparation method comprises the following steps: carrying out roughening modification treatment on the surface of the provided graphene film, then plating the surface of the graphene film with a first metal coating, carrying out laser irradiation treatment on the first metal coating, and finally plating the first metal coating with a second metal coating. The bonding strength of the metal coating and the surface of the graphene film is improved through roughening modification treatment of the surface of the graphene and laser irradiation treatment of the first metal coating; meanwhile, after the graphene-metal composite film manufactured by the method is welded with metal, the resistance and the temperature rise can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of graphene, in particular to a graphene-metal composite film and a manufacturing method thereof. Background technique [0002] Graphene has excellent mechanical, optical, electrical, magnetic and thermal properties, and has the advantages of fast heating, low power consumption, good thermal uniformity, excellent electrical conductivity, and high stability. It has great application prospects in the field of heating applications. In terms of subdivision, the excellent physical and chemical properties of graphene make it a research hotspot in the field of electronic devices, which has attracted the attention of a wide range of researchers. [0003] Graphene is a pure carbon material, which is essentially different from metal in chemical bonds. The surface of graphene film is a pure covalent bond, while metal exists in the form of ionic bond, which makes it difficult for metal to be realized on the surface of g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/14H01B13/00
CPCH01B5/14H01B13/0026H01B13/00
Inventor 蔡金明陈其赞郝振亮
Owner GUANGDONG MORION NANOTECHNOLOGY CO LTD
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