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One-step method for preparing graphene/copper composite powder

A technology of composite powder and graphene, applied in nanotechnology, nanotechnology, nanotechnology and other directions for materials and surface science, can solve problems such as high cost, poor uniformity, complex process, etc., and achieve high bonding strength. , equipment and simple operation, cheap effect

Active Publication Date: 2022-06-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The molecular level mixing method is relatively complicated and the cost is relatively high
[0010] The present invention solves the technical problems such as poor uniformity of graphene coating on the copper surface, high cost and complicated process in the existing preparation of graphene / copper composite powder; Synthesis and coating of graphene

Method used

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  • One-step method for preparing graphene/copper composite powder
  • One-step method for preparing graphene/copper composite powder
  • One-step method for preparing graphene/copper composite powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: the one-step method in this embodiment prepares the method for graphene / copper composite powder as follows:

[0022] Take 10 kg of copper formate tetrahydrate with a particle size of 100 μm, and use an atmosphere heating furnace to heat, the atmosphere is Ar gas, the heating method is rapid heating (100 ° C / min), the heating temperature is 900 ° C, and the heating time is 1min; in an Ar gas atmosphere and cooled to room temperature to obtain graphene / copper composite powder.

[0023] The product of the present embodiment is detected, and the results are as follows Figure 1-3 shown.

[0024] Depend on figure 1 It can be seen that graphene is thin and can well coat copper particles, and the particle size of copper particles is generally between 0.01 μm and 100 μm.

[0025] Depend on figure 2 It can be seen that the peak position of D peak is 1349.30, the peak position of G peak is 1589.13, and the peak position of 2D peak is 2683.04. Therefore, it is ...

Embodiment 2

[0027] Embodiment 2: the one-step method in this embodiment prepares the method for graphene / copper composite powder as follows:

[0028] Take 10 kg of copper formate tetrahydrate with a particle size of 100 μm, and use an atmosphere heating furnace to heat, the atmosphere is Ar gas, the heating method is rapid heating (100 ° C / min), the heating temperature is 800 ° C, and the heating time is 1min; under the Ar gas atmosphere Cool to room temperature to obtain graphene / copper composite powder.

[0029] The matrix of the composite powder prepared by the method of this embodiment is pure copper, the surface of the matrix is ​​graphene, and the graphene is thin, and the surface graphene can well coat the copper particles, and the particle size of the copper particles is generally 0.01 μm- between 100μm.

Embodiment 3

[0030] Embodiment 3: the one-step method in this embodiment prepares the method for graphene / copper composite powder as follows:

[0031] Take 10 kg of copper formate tetrahydrate with a particle size of 100 μm, and use an atmosphere heating furnace to heat, the atmosphere is Ar gas, the heating method is rapid heating (100 ° C / min), the heating temperature is 700 ° C, and the heating time is 1min; under the Ar gas atmosphere Cool to room temperature to obtain graphene / copper composite powder.

[0032] The matrix of the composite powder prepared by the method of this embodiment is pure copper, the surface of the matrix is ​​graphene, and the graphene is thin, and the surface graphene can well coat the copper particles, and the particle size of the copper particles is generally 0.01 μm- between 100μm.

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Abstract

The invention discloses a method for preparing graphene / copper composite powder in one step, belonging to the technical field of inorganic synthesis and powder metallurgy. The invention solves the technical problems such as poor uniformity of graphene coating on the copper surface, high cost and complicated process in the prior preparation of graphene / copper composite powder. The method of the present invention is as follows: under the condition of an oxygen-free atmosphere and an air pressure of 0.001Pa-101325Pa, the temperature of the organic copper salt powder is raised to 600-1050°C at a rate of 1-500°C / min, and after heating for 0.1min-600min, it is heated in the absence of oxygen Cool under atmosphere to obtain graphene / copper composite powder. The invention adopts copper salt as raw material, which is cheap, has very simple equipment and operation, and is easy to carry out batch production; the invention simultaneously realizes the preparation of copper nanoparticles and the coating of graphene on the surface of nanoparticles in a one-step heating process.

Description

technical field [0001] The invention belongs to the technical field of inorganic synthesis and powder metallurgy. Background technique [0002] Graphene is a new type of material composed of a single layer of carbon atoms. Its ultra-high mechanical properties, superior electrical and thermal conductivity, and large specific surface area have attracted extensive attention of researchers. The Young's modulus and tensile strength of monolayer graphene are as high as 1TPa and 130GPa, respectively, and the electron mobility is 200,000cm 2 V -1 s -1 , and its specific surface area is as high as 2600m 2 g -1 , while the density is only 2.2 g cm -3 . The significance of compounding graphene with copper, a commonly used metal material, is: the graphene coated on the surface of copper grains can effectively improve the weak oxidation resistance of copper and achieve a protective effect; it can also avoid the agglomeration of copper grains to the greatest extent. , so as to obt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/30B82Y30/00
CPCB82Y30/00B22F9/30C01P2004/80C01P2002/82B22F2201/00
Inventor 王黎东费维栋陈实时振东杨子玥
Owner HARBIN INST OF TECH