Large area multifunction graphene film preparation method

A graphene thin film, multifunctional technology, applied in the field of nanomaterials, can solve the problems of poor conductivity, difficult separation, low efficiency, etc., and achieve the effects of good flexibility and stability, simple preparation method, and abundant raw materials

Active Publication Date: 2014-04-23
宁波甬烯光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with inorganic metal conductive films, traditional conductive polymer materials have poor conductivity, such as PANI and PPy, while new conductive polymers have high conductivity, such as PEDOT and PSS, but the price is high. Therefore, conductive polymers are not conducive to mass production. Production
Carbon nanotubes have excellent electrochemical properties and excellent mechanical properties, and are one of the ideal materials for preparing flexible conductive films. However, the purification process of carbon nanotubes has low yield, difficult separation and low efficiency, making the film preparation process complicated. , the high cost limits its large-area industrial application

Method used

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  • Large area multifunction graphene film preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of graphene oxide doped polyaniline

[0031] Weigh 0.5g of graphite oxide (200 mesh) into a beaker, add 100 mL of 1M HCl, and sonicate for 30 minutes, add 1g of aniline, and then sonicate for 2.0 hours, then stir the solution at room temperature for 30 minutes, and place it in In an ice-bath environment, slowly add 0.8 g of APS and 30 mL of 1M HCl solution, aniline reacts to form polyaniline, after the reaction is complete. Add 150 mL of ionized water to dilute the solution, and then put the solution in a funnel for suction filtration. After suction filtration, the polyaniline-doped graphene oxide obtained on the filter paper is dispersed in the aqueous solution, and the polyaniline-doped graphene oxide solution is Put it in a vacuum drying oven at 100°C for 10 h to obtain solid polyaniline-doped graphene oxide powder.

[0032] (2) Preparation of polyaniline-doped graphene oxide film

[0033] In a water tank with a valve, the valve at the bottom of th...

Embodiment 2

[0037] (1) Preparation of graphene oxide doped polyacetylene

[0038] According to the preparation method in Example 1, 1 g of aniline is changed into 2 g of acetylene, and the oxidant APS is changed into 1.2 g of FeCl 3 To prepare graphene oxide doped with polyacetylene.

[0039] (2) Preparation of graphene oxide films doped with polyacetylene and polyethylene oxide

[0040] According to the preparation method in Example 1, the glass sheet is replaced by flexible PET, and the inclination angle between the bottom of the tank and the bottom of the tank is 45 °, and the ethanol / ultrapure water mixed solution with a volume ratio of 1:8 is changed to 1: 6 acetone / ultrapure water mixture to prepare a single-layer flexible transparent graphene oxide film doped with polyacetylene. Then use a single layer of polyacetylene-doped flexible transparent graphene oxide film as a substrate, deposit polyethylene oxide-doped graphene oxide on it, and then dry it in an oven at 90°C to obtain...

Embodiment 3

[0044] (1) Preparation of graphene oxide doped polypropylene oxide

[0045] According to the preparation method in Example 1, 1 g of aniline was replaced with 2.3 g of propylene oxide to prepare graphene oxide doped with polypropylene oxide.

[0046] (2) Preparation of four-layer graphene oxide films doped with polypropylene oxide, polyacetylene, polythiophene and polyethylene succinate

[0047] According to the preparation method in Example 2, the glass substrate is replaced by a flexible FRP composite film, and the angle of inclination between the bottom of the tank and the bottom of the tank is 60°, and the ethanol / ultrapure water mixed solution with a volume ratio of 1:8 is changed to 1:9 N,N-dimethylformamide / ultrapure water mixture to prepare a single-layer large-area flexible transparent graphene oxide film doped with polypropylene oxide. The prepared single-layer doped polypropylene oxide large-area flexible transparent graphene oxide film was used as a substrate, on ...

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Abstract

The present invention discloses a large-area multifunction graphene film preparation method, and belongs to the field of nanometer materials. The technical scheme of the present invention comprises: doping conductive polymers with different performances in graphene oxide, dispersing the conductive polymer-doped graphene oxide in an organic solvent, settling the conductive polymer-doped graphene oxide on the substrate surface through a layer-by-layer settlement manner, and carrying out drying and reduction to prepare the multi-layer and multi-functionalized large-area conductive graphene film. According to the present invention, the preparation method has characteristics of simpleness, green environmental protection, abundant raw materials and high raw material utilization rate, the preparation of the multifunctional large-area transparent conductive graphene film can be achieved, and the prepared conductive graphene film has characteristics of high electrical conductivity, high light transmittance, good flexibility and good stability, and can be widely used in the fields of OLED, solar batteries, super capacitor electrodes, flexible electrodes, organic memory devices and the like.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of a large-area multifunctional graphene film. Background technique [0002] Conductive thin films can be used as electrodes or some semiconductor electrostatic materials, and have a wide range of application values ​​in organic electroluminescent displays (OLEDs), solar cells, light-emitting diodes, photoelectric displays, and organic memory devices. At present, commonly used semiconductor device electrodes are prepared by using rare earth metal indium tin oxide thin films of traditional inorganic materials, such as ITO, IZO, etc. Its large-scale application in the field of optoelectronics, especially in flexible, large-area organic optoelectronic functional material electrode devices. Therefore, the development of a conductive film with abundant raw materials, low price, good flexibility and high stability has economic benefits and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04H01B13/00H01B5/14C23C20/06C01B32/184
Inventor 闵永刚范天举刘屹东张乐乐童宋照宋建军
Owner 宁波甬烯光电科技有限公司
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