A kind of electrochemical preparation method of fluorinated graphene material

Abstract

The invention relates to an electrochemical preparation method of a fluorinated graphene material. The method comprises the steps that (1) carbon monofluoride is served as electrodes to be assembled as a battery, after the battery discharges, a pole piece containing the carbon monofluoride electrode material is taken out and subjected to ultrasonic exfoliation in an organic solvent, and fluorinated graphene is obtained; or (2) the fluorinated graphene material is obtained by electrolyzing carbon monofluoride, specifically, carbon monofluoride serves as an electrolysis electrode and assembled to be an electrolytic tank, the electrolytic tank is powered on and electrolyzed, and thus fluorinated graphene is obtained. The preparation method does not require high temperature and high vacuum conditions and special reaction instruments. The equipment and technology processes are simple, the operability is high, the used raw materials are cheap, the preparation cost is low, and the preparationmethod has the characteristics of being short in period and green and efficient. In addition, the obtained product is high in purity and less in number of layers.

Description

technical field [0001] The invention belongs to the technical field of inorganic materials, and in particular relates to an electrochemical preparation method of a fluorinated graphene material. Background technique [0002] Fluorinated graphene is made by adding a fluorine atom around every carbon atom in graphene. It is a new nanomaterial in the graphene family, the first chemically equivalent derivative of graphene, and a wide bandgap semiconductor. Fluorinated graphene still retains the two-dimensional planar structure of graphene, and fluorine atoms interact with carbon atoms in the form of covalent bonds or ionic bonds outside the plane. The fluorine-carbon bond endows it with outstanding interface and physical and chemical properties such as adjustable band gap, low surface energy, strong hydrophobicity, excellent mechanical properties, and high stability, making it both the structure of graphene and Teflon materials And performance characteristics, known as "two-di...

AI Technical Summary

Problems solved by technology

Some of these methods use graphene as a raw material, but due to its difficulty in preparation and high price, the synthesis cost is too high; in addition, the fluorinating reagents used are mostly fluorine gas, XeF 2 and many more

These fluorinated reagents are highly toxic, seriously pollute the environment, and are not easy to obtain, and this type of reaction has high requirements for equipment, experimental conditions, and operations.

Some exfoliation methods use expensive ionic liquids as solvents, resulting in high preparation costs

At present, the research on fluorinated graphene is still in its infancy, and the commonly used preparation methods can only be carried out on a small scale in the laboratory, and it is impossible to achieve large-scale batch production.

Therefore, the existing preparation methods greatly limit the application of fluorinated graphene, and it is necessary to find and develop a new method that is green, efficient and capable of large-scale preparation of fluorinated graphene.

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