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Method for preparing graphene compounds and graphene oxide compounds with high efficiency

A composite and graphene technology, applied in the field of preparation of graphene composites or graphene oxide composites, can solve the problems of high cost, many process steps, easy composite and the like

Inactive Publication Date: 2010-10-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method for preparing graphene composites or graphene oxide composites with high efficiency, so as to solve the problem that graphene or graphene oxide itself is easy to composite, the existing method prepares graphene composites or graphene oxide composites with many process steps, Problems with high cost and difficulty in decentralization

Method used

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specific Embodiment approach 1

[0013] Specific embodiment one: the method for high-efficiency preparation of graphene composite or graphene oxide composite in this embodiment is carried out according to the following steps: 1. After mixing carbon material powder, solid particles and liquid working medium, carry out mechanical peeling 2. Remove the non-target composite material: remove the liquid working medium, and retain at least one solid particle, that is, obtain a graphene composite or a graphene oxide composite; wherein, the average particle diameter of the solid particle is between 1nm~ 100 μm, the carbon material powder is graphite powder, expanded graphite, expandable graphite, intercalated graphite or graphite oxide powder, and the liquid working medium has a surface tension of 10-73mN / m and a viscosity of 1×10 9 mPa·s, add dispersant during the mechanical peeling process, the amount of dispersant is 0~20% of the liquid working medium.

[0014] The working temperature described in this embodime...

specific Embodiment approach 2

[0016] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the liquid working medium is water, alcohols, aromatic compounds, ketones, amines, ionic liquids, alkanes, heterocyclic compounds, carbon disulfide , carbon tetrachloride, gasoline, vegetable oil, diesel oil, wax, alcohol solution of organic dyes, aqueous alcohol solution, alcohol solution of alkanes, alcohol solution of ketones, aqueous solution of amine, alkane solution of aromatic compounds or polymer compounds, Wherein the polymer compound is polyacrylate, polyvinyl alcohol, polyethylene glycol, polyvinyl acetate, starch, polybutadiene, polybutadiene, epoxy resin, coal tar or pitch. Other steps and parameters are the same as in the first embodiment.

[0017] In this embodiment, alcoholic solutions of water, alcohols, aromatic compounds, ketones, amines, ionic liquids, alkanes, heterocyclic compounds, carbon disulfide, carbon tetrachloride, gasoline, vegetable oil, diesel oil, wax, organic ...

specific Embodiment approach 3

[0018] Specific embodiment three: the difference between this embodiment and specific embodiment two is: the alcohols are ethanol, ethylene glycol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol Alcohol, glycerin, butanol and isopropanol or a mixture of several of them. Other steps and parameters are the same as in the second embodiment.

[0019] In this embodiment, when the alcohols are a mixture, various alcohols are mixed in any ratio.

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Abstract

The invention relates to a method for preparing graphene compounds and graphene oxide compounds with high efficiency, relating to the method for preparing the graphene compounds and the graphene oxide compounds. The invention solves the problems of easy composition of graphene or graphene oxide per se and many process steps, higher cost and difficult dispersedness for preparing the graphene compounds and the graphene oxide compounds by the traditional method at the same time. The invention adopts a mechanical stripping method to obtain the graphene compounds and the graphene oxide compounds. In the invention, an automatic machine is utilized, solid particles are used for assisting stripping, the contact area and the stripping number of the stripping process are greatly increased, and carbon material powder experiences a lot of stripping processes through the action of shear and impact, thereby obviously improving the stripping efficiency and achieving the purpose of uniform dispersedness to the composites. The method is suitable for industrial mass production of the graphene compounds and the graphene oxide compounds.

Description

technical field [0001] The invention relates to a preparation method of a graphene composite or a graphene oxide composite. Background technique [0002] Graphene is the thinnest two-dimensional material known so far. Single-layer graphene has an ideal two-dimensional crystal structure consisting of hexagonal lattices. In 2004, Andre K. Geim (AndreK.Geim) of the University of Manchester (Science, 2004, 306:666) used a very simple method - Micromechanical cleavage (Micromechanical cleavage), in high The oriented pyrolytic graphite was repeatedly peeled off with scotch tape to obtain single-layer graphene. Subsequently, graphene and graphene oxide caused a wave of research all over the world. [0003] Graphene has many peculiar characteristics, with excellent electrical, optical, thermal and mechanical properties, and is likely to cause revolutionary changes in many fields. The ideal single-layer graphene has a large specific surface area (2630m 2 / g), is a potential energ...

Claims

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Application Information

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