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Graphene nano-belts, preparation method of graphene nano-belts, and application of graphene nano-belts in transparent electrodes

A graphene nanoribbon and graphene thin film technology, applied in nanotechnology, chemical instruments and methods, optics, etc., can solve the problems of cumbersome preparation process, high price, difficulty in preparing long-length graphene nanoribbon, etc. Simple, low-cost, shape-controllable effect

Inactive Publication Date: 2014-06-11
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the methods for preparing graphene nanobelts mainly include chemical supergeneration, cutting carbon tubes, etc., and using nanospheres to self-assemble on the surface of graphene, or spin-coating a layer of photoresist on the surface of graphene, and then performing ultraviolet lithography. Forming patterns and other methods, however, these methods are cumbersome and expensive to prepare, and it is difficult to prepare micron-scale and / or nano-scale graphene nanoribbons with controllable length, width, thickness and morphology

Method used

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  • Graphene nano-belts, preparation method of graphene nano-belts, and application of graphene nano-belts in transparent electrodes

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preparation example Construction

[0012] The invention provides a method for preparing a graphene nanoribbon, which comprises the following steps: (1) depositing a solution or melt containing a spinnable polymer on a graphene film by electrospinning to form a mask; (2) ) Etching away the graphene on the graphene film not covered by the mask; (3) removing the mask to form graphene nanobelts.

[0013] According to the present invention, the spinnable macromolecules can be any macromolecules capable of forming a mask on a graphene film by micro and / or nano wires by electrospinning technology, such as polyacrylonitrile, polyvinyl alcohol, poly One or more of vinylpyrrolidone, polystyrene and polylactic acid, preferably one or more of polyvinyl alcohol, polyacrylonitrile and polyvinylpyrrolidone.

[0014] According to the present invention, preferably, the method further includes dispersing one or more of inorganic substances, inorganic nanoparticles, and organometallic compounds in the solution or melt of the spin...

Embodiment 1

[0044] The graphite oxide solution of configuration 0.5mg / L, adopts the method for spin-coating of homogenizer to load graphite oxide thin film on the surface of quartz plate, and spin-coating speed is 4000 revs / min, and spin-coats 3 times, the graphene thin film that will obtain, in Treated at 1100°C under the protection of hydrogen.

[0045] At 60°C, polyvinyl alcohol was dissolved in twice-distilled water to prepare an aqueous solution of polyvinyl alcohol with a concentration of 10 wt%. Then carry out electrospinning, wherein the amount of solution is 1mL, the nozzle diameter of the glass tube is 0.33mm, and the nozzle of the glass tube is inclined at 35.9 degrees with the horizontal line, the voltage of the high-voltage power supply is 15kV, the receiving substrate is aluminum foil, and the spinning nozzle The distance from the receiving substrate is 10 cm, the quartz plate loaded with graphene film is placed on the receiving substrate aluminum foil, and the power is turn...

Embodiment 2

[0047] Prepare graphene nanobelts according to the same method as Example 1, the difference is that polyvinyl alcohol is first dissolved in double distilled water, and then nickel acetate is dispersed in this polyvinyl alcohol solution, wherein, by mass ratio , Nickel acetate: polyvinyl alcohol = 1:1, prepared as an aqueous solution of polyvinyl alcohol containing nickel acetate at a concentration of 10wt%. As a result, graphene nanoribbons with a length of 3 mm, a width of 150 nm, and a thickness of 30 nm were obtained.

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Abstract

The present invention provides a graphene nano-belt preparation method, which comprises: (1) depositing a spinnable polymer-containing solution or melt on a graphene film through electrostatic spinning to form a mask; (2) etching away the graphene being not covered with the mask; and (3) removing the mask to form the graphene nano-belts. The present invention further provides the graphene nano-belts prepared through the preparation method, and an application of the graphene nano-belts in transparent electrodes. According to the present invention, the method has advantages of simple process, low cost, easy large-scale preparation and the like, and the graphene nano-belts prepared through the preparation method has characteristics of controllable length, controllable width, controllable thickness and controllable shape.

Description

technical field [0001] The invention relates to a preparation method of a graphene nanobelt, a graphene nanobelt prepared by the method, and an application of the graphene nanobelt in a transparent electrode. Background technique [0002] Graphene has attracted widespread attention for its unique electrical properties, and the carrier mobility rate of graphene can reach 10000mc at room temperature. 2 / V s, the light transmittance of single-layer graphene can reach 97.7%, which is expected to become a new generation of electronic materials. However, the light transmittance of the graphene film decays exponentially with the increase of the number of graphene layers, which restricts the improvement of the performance of graphene-based transparent electrodes. [0003] Research has found that nano-diversification of graphene to make it have a certain geometric structure can open the band gap and make graphene semiconducting. Graphene nanoribbons are one of the graphene nanostru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04B82Y40/00G02F1/155C01B32/194
Inventor 智林杰何海勇王杰
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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