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Preparation method of graphene and graphene oxide compound

A graphene and graphene-coated technology, which is applied in the field of graphene composite materials and the preparation of solar cell positive electrodes, can solve the problems of long cycle, complicated process, energy consumption, and cost, etc., and achieve continuous shedding, Effect of promoting conduction and improving electrochemical performance

Inactive Publication Date: 2016-10-05
YURUI SHANGHAI CHEM
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Problems solved by technology

[0005] At present, the method of adding graphene to the positive electrode material of the battery to modify it is complicated in process and long in cycle, and at the same time, the problems of energy consumption and cost have not been well solved.

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  • Preparation method of graphene and graphene oxide compound

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Embodiment Construction

[0020] 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.

[0021] see figure 1 , graphene composite material solar cell positive pole, it is characterized in that, comprise positive electrode active material layer, graphene coating layer, nano derivation layer, described positive electrode active material layer outer surface is coated with the graphene coating layer of three-dimensional structure, A nano-derivative layer is compounded on the graphene coating layer by a solvothermal method.

[0022] The graphene cladding layer of the three-dimensional structure is made by using foamed copper as the metal template skeleton, and the graphene is grown on the foamed copper skeleton by chemical vapor deposition, and transferred to the outer surface of the positive electrode active material by wet etching . ...

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Abstract

The invention relates to a preparation method of graphene and graphene oxide compound. The preparation method of graphene and graphene oxide compound comprises the steps: A dissolving catechol or catechol derivative into a solvent to obtain catechol or catechol derivative solution with mass concentration 0.1g / ml; B polishing oxidized graphene into powder, weighing a certain amount of oxidized graphene powder and adding the oxidized graphene powder in the catechol or catechol derivative solution, magnetically stirring and dispersing the solution uniformly; C ultrasonically dispersing the prepared solution in the step B for 1h, and transferring the dispersed solution into a high pressure reaction vessel; D placing the high pressure reaction vessel in 150DEG C water bath for performing hydrothermal reaction for 14h; and E filtering the sample, watering the sample, performing vacuum drying on the sample to obtain graphene. The preparation method of graphene and graphene oxide compound has the advantages of being mild in reaction, being lower in energy consumption, and avoiding usage of organic solvent with higher toxicity.

Description

technical field [0001] The invention relates to a graphene composite material, in particular to a graphene composite material and a method and application thereof for preparing a positive pole of a solar battery. Background technique [0002] Graphene is a new material with a single-layer sheet structure composed of carbon atoms. It is a planar film composed of carbon atoms with sp2 hybrid orbitals to form a hexagonal honeycomb lattice. It is a two-dimensional material with a thickness of only one carbon atom. [0003] The electron mobility of graphene exceeds 15000cm2 / V·s at room temperature, which is higher than that of carbon nanotubes or silicon crystals, while the resistivity is only about 10-8Ω·m, which is lower than that of copper or silver, because of its extremely low resistivity , the speed of electron migration is extremely fast, and because graphene is essentially a transparent and good conductor, it is also suitable for making transparent touch screens, light p...

Claims

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Application Information

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IPC IPC(8): H01G9/20H01G9/042
Inventor 赵晓宇
Owner YURUI SHANGHAI CHEM
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