Preparation method of graphene, graphene and application of graphene

A graphene and graphite technology, applied in the field of carbon material preparation, to achieve the effects of excellent thermal conductivity, uniform thickness and good quality
CN110980701AInactive Publication Date: 2020-04-10DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2020-04-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method for preparing graphene based on a primary solution of graphite oxide, and belongs to the technical field of nano materials. The method comprises the following steps: by taking a primary solution of graphene oxide as a raw material, firstly adding a proper amount of metal to control partial reduction of graphite oxide, washing and drying to obtain powdery partially reduced graphite oxide, and then realizing rapid reduction and expansion of the partially reduced graphite oxide by utilizing microwave heating to finally obtain graphene. The process is simple and efficient in preparation process, no organic solvent harmful to the human body is introduced in the preparation process, and the prepared graphene is high in carbon-oxygen ratio, low in costand easy to realize large-scale production, and has a wide application prospect in the fields of functional composite materials and anticorrosive coatings.
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Description

Technical field

[0001] The invention relates to a method for preparing graphene, and belongs to the technical field of carbon material preparation. Background technique

[0002] Since its inception, graphene has received widespread attention due to its different properties from traditional materials. Graphene is made of sp 2 A single carbon atom layer composed of hybrid carbon atoms, the C atoms of which are connected in a "head-to-head" manner, the C-C bond length is 0.142nm, and the single layer thickness is 0.7nm. Graphene has outstanding physical and chemical properties, such as excellent mechanical properties, high electrical conductivity (~10 6 S / cm), high thermal conductivity (5300W / m·K), molecular impermeability, etc. It can be seen that graphene has broad application prospects in the fields of heat dissipation and corrosion protection of electronic devices.

[0003] At present, the commonly used preparation methods of graphene include mechanical exfoliation, chemical vap...

Claims

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