Method for preparing graphene/copper compound powder

A technology of composite powder and graphene, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problems of poor uniformity, complicated process, high cost, etc., and achieve simple equipment and operation , cheap price, strong combined effect

Active Publication Date: 2019-02-05
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Method for preparing graphene/copper compound powder
  • Method for preparing graphene/copper compound powder
  • Method for preparing graphene/copper compound powder

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1: the one-step method in the present 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 heat it in an atmosphere heating furnace. Cool down to room temperature to obtain graphene / copper composite powder.

[0023] The product of this 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 relatively 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 the D peak is 1349.30, the peak position of the G peak is 1589.13, and the peak position of the 2D peak is 2683.04. Therefore, it is determined that the remaining product after being corroded is graphene.

[0026] Depend on image 3 It can be seen that this composite powder on...

Embodiment 2

[0027] Embodiment 2: the one-step method in the present 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 heat it in an atmosphere heating furnace. The atmosphere is Ar gas. Cool to room temperature to obtain graphene / copper composite powder.

[0029] The matrix of the composite powder prepared by the method in this example is pure copper, and the surface of the matrix is ​​graphene, and the graphene is relatively thin. At the same time, the graphene on the surface layer 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 the present 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 heat it in an atmosphere heating furnace. The atmosphere is Ar gas. Cool to room temperature to obtain graphene / copper composite powder.

[0032] The matrix of the composite powder prepared by the method in this example is pure copper, and the surface of the matrix is ​​graphene, and the graphene is relatively thin. At the same time, the graphene on the surface layer 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 provides a method for preparing graphene/copper compound powder, belongs to the technical field of inorganic synthesis and powder metallurgy and solves the technical problems of poor coating uniformity of graphene on the surface of copper, high cost, complexity in process and the like existing in conventional preparation of the graphene/copper compound powder. The method comprises the following steps of: at an oxygen-free atmosphere, under the condition that the air pressure is 0.001-101325Pa, increasing the temperature of organic copper salt powder to 600-1050 DEG C at the velocity of 1-500 DEG C/minute, performing heating for 0.1-600 minutes, and then performing cooling at the oxygen-free atmosphere to obtain the graphene/copper compound powder. According to the method provided by the invention, copper salt is adopted as a raw material, the price is low, equipment and operation are very simple, and batched production is easy to perform; and the preparation of copper nanometer particles and the coating of the graphene on the surfaces of nanometer particles are realized at the same time in the process of one-step heating.

Description

technical field [0001] The invention belongs to the technical field of inorganic synthesis and powder metallurgy. Background technique [0002] Graphene is a new material composed of a single layer of carbon atoms. Its ultra-high mechanical properties, super-strong electrical and thermal conductivity, and large specific surface area have attracted extensive attention from researchers. The Young's modulus and tensile strength of single-layer graphene are as high as 1TPa and 130GPa, respectively, and the electron mobility is 200,000cm 2 V -1 the s -1 , and its specific surface area is as high as 2600m 2 g -1 , while the density is only 2.2g cm -3 . The significance of compositing graphene with copper, a commonly used metal material, is: 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 obta...

Claims

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Application Information

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Patent Type & Authority Applications(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
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