Preparation method of graphene powder

A technology of graphene powder and mixed powder, which is applied in the field of preparation of carbon structural materials, can solve problems such as simple operation methods, easy storage and transportation of graphene raw materials, and achieve recycling, easy reaction control and continuous production, and easy The effect of storage and transportation

Active Publication Date: 2012-12-26
XINHE NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problem that the existing graphene preparation method cannot have the advantages of easy storage and transportation of raw materials, simple operation method, low cost, continuous production and environmental protection. The present invention provides a preparation method of graphene powder

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  • Preparation method of graphene powder

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specific Embodiment approach 1

[0013] Specific embodiment one: the preparation method of a kind of graphene powder of the present embodiment is realized through the following steps:

[0014] One, take by mass percentage the magnesium powder of 20%~40% and the carbonate powder of 60%~80%; Wherein, the purity of described magnesium powder is 95~99.999%, and average particle diameter is 0.03~5mm; The purity of the salt powder is 90~99.9%, and the average particle diameter is 0.01~5.2mm; the carbonate is one of magnesium carbonate, calcium carbonate, strontium carbonate, or a mixture of several in any proportion;

[0015] 2. Put the magnesium powder and carbonate powder weighed in step 1 into a ball mill, and carry out dry grinding or wet grinding to obtain a mixed powder; wherein, the conditions for dry grinding are: in an air atmosphere, a nitrogen atmosphere or Grinding in an argon atmosphere, the grinding time is 0.5~30h; the wet grinding conditions are: in an air atmosphere, nitrogen atmosphere or argon at...

specific Embodiment approach 2

[0017] Specific embodiment two: this embodiment is different from specific embodiment one: in step one, take by weight the magnesium powder of 22%~35% and the carbonate powder of 65%~78%, other steps and parameter and The specific embodiment one is the same.

specific Embodiment approach 3

[0018] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the purity of magnesium powder in step one is 99.5%, and the average particle diameter is 0.074 ~ 1.0mm, and other steps and parameters are the same as specific embodiment one or two same.

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Abstract

The invention provides a preparation method of graphene powder, relates to a preparation method of carbon structural materials, and solves the problem that the traditional preparation method of the graphene powder can not be easy to store and transport, simple in operation method, low in cost, continuous to produce and environment-friendly synchronously, and also solves the problem that the grapheme made by the present method has many defects and high energy consumption. The preparation method comprises the following steps: grinding and mixing to prepare the mixture powder of magnesium powder and carbonate powder; and burning and synthesizing the mixture powder, thus obtaining the graphene powder. The preparation method of the graphene powder provided by the invention has the advantages of being easy to store and transport, simple in operation method, low in cost, continuous to produce and environment-friendly; the prepared graphene powder is low in default, and is thinner; and the preparation method provided by the invention is suitable to be applied to industrially producing 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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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C01B32/184
Inventor 王黎东费维栋
Owner XINHE NEW MATERIALS CO LTD
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