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A kind of preparation method of graphene-anodized aluminum composite conductive material

An anodized aluminum and composite conductive technology, applied in the field of materials, can solve the problems of strict composite ratio, high cost of production raw materials, complicated preparation process, etc., and achieve the effect of less investment in equipment, excellent thermal management performance, and simple process

Active Publication Date: 2016-08-03
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, their raw material costs are high, the preparation process is complex, and the compounding ratio is strict, so their application is restricted by various aspects.

Method used

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  • A kind of preparation method of graphene-anodized aluminum composite conductive material
  • A kind of preparation method of graphene-anodized aluminum composite conductive material
  • A kind of preparation method of graphene-anodized aluminum composite conductive material

Examples

Experimental program
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Effect test

Embodiment 1

[0041] The anodized aluminum oxide (AAO) was ultrasonically cleaned in acetone / ethanol mixed solution for 10-30min, and then dried in an oven. The dried anodized aluminum oxide was annealed at 1200°C to obtain a substrate with stable pore size; Put anodized aluminum into CVD reaction furnace, feed 100 sccm hydrogen and 300 sccm argon, heat up to 1100 ° C at a heating rate of 10 ° C / min, after constant temperature 30, feed 10 sccm methane, adjust the hydrogen flow rate to 50 sccm, and react 210 minute. Stop feeding methane after the reaction, keep the flow rate of hydrogen and argon constant, control the cooling rate to 10oC / min down to 400oC, and then naturally cool to room temperature to obtain a graphene-anodized aluminum oxide (G-AAO) composite material.

[0042] The graphene-anodized alumina composite was ground to remove the graphene on the alumina side. Put the polished graphene-anodized aluminum composite into H 3 PO 4 The alumina template is etched away in an acid...

Embodiment 2

[0044] The preparation process is the same as in Example 1, except that the temperature of the CVD reaction is 1150°C.

Embodiment 3

[0046] The preparation process is the same as in Example 1, except that the temperature of the CVD reaction is 1200°C.

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Abstract

The invention provides a preparation method of a graphene-anodized aluminum composite conductive material and a graphene tube: annealing the anodized aluminum, and growing graphene on the anodized aluminum treated in step 1 through a chemical vapor deposition method to obtain Graphene-anodized aluminum composite conductive material; in the graphene-anodized aluminum composite material, at least a part of the graphene deposited on the surface of aluminum oxide is polished and removed, and then put into an acidic solution to etch away the aluminum oxide template to obtain graphene tube. The preparation method of the graphene-anodized aluminum composite material and the graphene tube has simple process, easy control of the process, excellent thermal management performance, no need to carry out the deposition of the back contact layer under vacuum conditions, low equipment investment, and large-scale production . In addition, the obtained graphene-anodized aluminum composite material and graphene tube not only have excellent electrical conductivity, but also have good thermal conductivity and have the performance of directional heat conduction.

Description

Technical field [0001] The invention involves the field of materials, especially the preparation method of a graphene-anode aluminum composite conductive material. Background technique [0002] Graphene is a new material made of a single -layer structure composed of carbon atoms.It is a kind of carbon atom with SP 2 The hybrid orbital forms a plane film with a hexagonal sheet, with only one two -dimensional material with the thickness of carbon atomic.Graphene has always been considered a hypothetical structure and cannot be stable alone. Until 2004, physicists Andreihem and Constantine Novosholov, a physicist at the University of Manchester, successfully succeeded in from graphite in the experiment.Graphene is separated, and it is confirmed that it can exist separately. [0003] The graphene is successfully separated from the scientific community due to its excellent physical characteristics.As the best conductivity in the world, the speed of electronics in graphene reaches 1 / 30...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00
Inventor 黄富强周密
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI