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Composite of graphene and conducting polymer and preparation method of composite

A conductive polymer, conductive polymer layer technology, applied in the field of graphene and conductive polymer composite materials and their preparation, can solve the problems of unstable doping effect, high square resistance of graphene, agglomeration, decomposition, etc., to achieve attenuation Small, reduced square resistance, good stability

Inactive Publication Date: 2014-08-06
WUXI GRAPHENE FILM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are two common methods to solve the defects in the transfer of graphene. One is to solve the defects caused by transfer of graphene by multiple transfers, and to reduce the square resistance of graphene after transfer by doping graphene. Although this method can greatly reduce the square resistance of graphene, the doping effect is unstable, such as high temperature, UV light irradiation, or too long doping time, the dopant may agglomerate, decompose, or Reaction with oxygen in the air, water vapor, etc., so that the square resistance quickly decays

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) A continuous graphene film is grown on the copper foil surface by conventional vapor deposition, and then the copper foil with graphene is flattened;

[0018] (2) Paste the PDMS film on the graphene surface, place it in an ammonium persulfate solution (concentration: 58.6g / L), take it out every 10 minutes and wash it alternately with ethanol and deionized water until the substrate copper foil is completely corroded After dropping off, put it into deionized water to wash away the impurity ions adsorbed on the graphene surface, take it out, blow off the deionized water on the graphene surface with a nitrogen gun, bake at 90°C for 5 minutes, and stick the graphene side of the PDMS film on the target On the substrate polyethylene phthalate (PET), after baking at 90°C for 15 minutes, remove the PDMS film to obtain PET / graphene, tear it with 3M tape once and peel off, square resistance 900Ω / sq, light transmittance 88.8%, haze 1.0%;

[0019] (3) Spin-coat an aqueous solut...

Embodiment 2

[0021] (1) The glass surface is first subjected to 40KH 2 Oxygen plasma generated by a radio frequency power supply is treated at a pressure of 5 Pa for 1 min, and then a layer of tetrahydrofuran solution (concentration 100 mg / L) of polyaniline is scraped on the glass surface, and baked at 200 ° C for 1 hour to obtain glass / polyaniline;

[0022] (2) Adopt conventional vapor deposition method to grow a continuous graphene film on the surface of copper foil, and then flatten the copper foil with graphene;

[0023] (3) Spin-coat a layer of PMMA on the side of the copper foil where graphene grows, and then place it in an ammonium persulfate solution (concentration: 58.6g / L), take it out every 10 minutes and wash it alternately with ethanol and deionized water until After the substrate copper foil is completely corroded, put it into deionized water to wash away the impurity ions adsorbed on the graphene surface to obtain PMMA / graphene;

[0024] (4) Lay the graphene side of PMMA / gr...

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Abstract

The invention discloses a composite of graphene and a conducting polymer. The composite comprises a base body; a graphene layer and a conducting polymer layer are arranged in sequence on the surface of the base body, or the conducting polymer layer and the graphene layer are arranged in sequence on the surface of he base body. A preparation method of the composite comprises the following steps: transferring the graphene onto the surface of the base body first, then coating the graphene with the conducting polymer; or coating the surface of the base body with the conducting polymer first, then transferring the graphene onto the conducting polymer; baking to obtain the composite of the graphene and the conducting polymer. According to the invention, the composite is simple in preparation process and can lower sheet resistance obviously after the graphene is transferred; the stability is excellent, that is, even though the composite is placed for a long time, attenuation of the sheet resistance of the graphene is extremely small, and the sheet resistance attenuation ratio of the composite placed for 30 days is less than 10%.

Description

technical field [0001] The invention belongs to the field of graphene materials, in particular to a graphene and conductive polymer composite material and a preparation method thereof. Background technique [0002] Graphene is a single-atom-layer two-dimensional crystal in which carbon atoms are tightly packed in a hexagonal structure. In addition to its excellent optical, thermal, and mechanical properties, graphene’s carriers behave like photons, and their intrinsic mobility can be controlled. up to 2×10 5 cm 2 / (V·S) (J. Appl. Phys. 2011, 109, 093702.). Since the discovery of graphene, due to its excellent mechanical, electronic and thermal stability properties, the application of graphene in electronic devices, electrodes, capacitors, sensors and composite materials has been widely valued and has become a current international hot research field. In order to realize its potential application, the first task is how to solve the defects in the transfer of graphene grow...

Claims

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Application Information

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IPC IPC(8): B32B27/06B32B27/36B32B27/30B32B9/04B32B17/06C08J7/00C03C17/28
Inventor 邱玉锐
Owner WUXI GRAPHENE FILM
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