Method for preparing graphene powder by combustion synthesis

A technology of combustion synthesis and graphene powder, applied in graphene, nano-carbon and other directions, can solve the problems of low cost, simple operation method, easy storage and transportation of graphene raw materials, etc., and achieves energy cost saving, high safety factor, and easy storage. and transport effects

Active Publication Date: 2012-12-19
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention is to solve the problem that the existing graphene preparation method cannot simultaneously have the advantages of easy storage and transport

Method used

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  • Method for preparing graphene powder by combustion synthesis
  • Method for preparing graphene powder by combustion synthesis

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specific Embodiment approach 1

[0015] Specific embodiment one: a kind of combustion synthesis of the present embodiment prepares the method for graphene powder, realizes by following steps:

[0016] One, take by weight 0.65 ~ 1 part of magnesium powder and 1 part of sugar powder; wherein, the purity of the magnesium powder is 95 ~ 99.99%, and the average particle diameter is 0.03 ~ 3mm; the purity of the sugar powder is 95 ~99.9%, average particle diameter 0.001~3mm; sugar is monosaccharide, disaccharide, oligosaccharide or polysaccharide;

[0017] 2. Put the magnesium powder and powdered sugar weighed in step 1 into a powder mixer, and perform dry powder mixing in an air atmosphere. The powder mixing time is 0.5~5h to obtain a mixed powder;

[0018] 3. Carrying out the mixed powder obtained in step 2 to a high-pressure combustion synthesis reaction or an atmospheric pressure combustion synthesis reaction;

[0019] 4. Put the mixed powder processed in step 4 into hydrochloric acid with a mass percentage of...

specific Embodiment approach 2

[0020] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in Step 1, 0.74-0.9 magnesium powder and 1 part of powdered sugar are weighed in parts by mass, and other steps and parameters are the same as Embodiment 1. .

specific Embodiment approach 3

[0021] Specific embodiment three: this embodiment differs from specific embodiment one or two in that: the purity of the magnesium powder in step one is 99.5%, and the average particle diameter is 0.1mm, and other steps and parameters are identical with specific embodiment one or two.

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Abstract

The invention relates to a method for preparing graphene powder by combustion synthesis, in particular to a preparation method of carbon structure material, aiming at solving the problem that the existing preparation method of graphene does not have the advantages of being easy in storage and transportation of raw materials, energy-saving, simple in operation method and low in cost at the same time. The preparation method comprises the steps of: preparing mixed powder of Mg powder and powdered sugar by mixing powder in a dry method, and carrying out combustion synthesis reaction on the mixed powder to obtain the graphene powder. The preparation method of the graphene powder has the advantages of being easy in storage and transportation of raw materials, energy-saving, simple in operation method and low in cost at the same time. The graphene powder prepared by the method is lower in thickness. The method is suitable for industrial production of the graphene.

Description

technical field [0001] The invention relates to a method for preparing a carbon structure material. Background technique [0002] Graphene is a single-layer sheet structure material composed of carbon atoms. It has attracted extensive attention from researchers because of its advantages such as high strength, high thermal conductivity, high electrical conductivity, and high specific surface area. At present, the methods for preparing graphene mainly include: mechanical exfoliation method, solvent exfoliation method, crystal epitaxial growth method, chemical vapor deposition method and graphite oxide thermal expansion method, etc. The efficiency of graphene sheets produced by mechanical exfoliation and solvent exfoliation is very low; crystal epitaxial growth and chemical vapor deposition are suitable for the preparation of large-area graphene films, which cannot meet the requirements of small-scale graphene materials in the field of nanocomposites , and the method is comple...

Claims

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Application Information

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IPC IPC(8): C01B31/04C01B32/184
Inventor 王黎东费维栋
Owner HARBIN INST OF TECH
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