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Preparation method of graphene

A graphene and graphite powder technology, applied in the field of graphene preparation, can solve the problems of complex process, difficult single-layer graphene, high production equipment, and high conditions, and achieves low requirements for preparation conditions, simple preparation process, and no structural defects. Effect

Inactive Publication Date: 2013-06-05
XIDIAN UNIV
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Problems solved by technology

[0004] The yield of the micromechanical exfoliation method is too low, which is only suitable for small-scale laboratory tests; the epitaxial growth method has high requirements for production equipment and conditions, and is not suitable for the current production requirements; it is difficult to obtain uniform single-layer graphene by chemical vapor deposition , and the process is complex; the reduced graphene obtained by the graphite oxide reduction method often has too many defects, which is fatal to the electrical properties of graphene

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Embodiment Construction

[0021] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0022] like figure 1 Shown, a kind of preparation method of graphene, utilizes the acene-condensed-ring arene derivative that contains hydrophilic group as intercalation reagent, and utilizes water and non-aqueous polar solvent as dispersion system, prepares graphite by step-by-step ultrasonic method alkenes, including the following steps:

[0023] In step 110, the graphite powder is added to the non-aqueous polar solvent in which the acene condensed ring arene derivative is dissolved to form a mixed system. Take 1 mg to 1000 mg of graphite particles (with a particle size between 5 μm and 300 μm) and add them to dissolved 1 mg to 500 mg of acene condensed ring aromatic hydrocarbon derivatives (such as naphthoic acid, naphthaldehyde, anthracene ...

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Abstract

Disclosed is a preparation method of grapheme. The preparation method of the grapheme comprises the following steps: graphite powder is added to non-water polar solvent dissolved with acene condensed nucleus arene derivative to form a mixed system; the mixed system is shocked, washed, centrifuged and filtered to obtain grapheme solution. The preparation method of the grapheme is not high in requirements for preparation conditions, simple in preparation process, good in quality of obtained grapheme, almost free of structural defects and considerable in productivity.

Description

Technical field: [0001] The invention relates to an allotrope of carbon element, in particular to a preparation method of graphene. Background technique: [0002] In 2004, Geim et al. first stripped off highly oriented pyrolytic graphite to obtain single-atom-layer nano-graphite flakes—graphene. The emergence of graphene has added a new member to the carbon family, becoming the fifth allotrope of carbon. Single-layer graphene is a two-dimensional atomic crystal in the true sense. It is the thinnest material known in the world. The superposition thickness of 200,000 single-layer graphene is only equivalent to the diameter of a hair. Graphene has ultra-high mechanical strength, good electrical and thermal conductivity, and unique electrical properties, so it has a wide range of application prospects. [0003] The mass production of high-quality graphene is a prerequisite for the widespread application of graphene, and it has always been a hot spot in graphene research. At p...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C01B32/184
Inventor 马中发庄弈琪肖郑操吴勇张鹏凌宇
Owner XIDIAN UNIV
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