Preparation method of conducting polymer/grapheme composite nanometer material

A conductive polymer and graphene composite technology, applied in nanotechnology, cable/conductor manufacturing, circuits, etc., can solve problems such as difficult control of polymer thickness, structural damage of conductive polymers, and difficulty in graphene film formation. Excellent chemical activity, controllable film thickness and good quality

Inactive Publication Date: 2012-11-21
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the in-situ chemical oxidation polymerization method generally needs to be carried out in a solution, and the thickness of the polymer is not easy to control, and self-polymerization is easy to occur when the monomer is polymerized.
Because graphene itself is difficult to form a film, the current electrochemical deposition method usually filters graphite oxide into paper as an electrode, and after the conductive polymer is deposited, the graphite oxide is post-reduced, which is easy to change the structure of the conductive polymer. cause damage

Method used

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  • Preparation method of conducting polymer/grapheme composite nanometer material
  • Preparation method of conducting polymer/grapheme composite nanometer material

Examples

Experimental program
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Embodiment 1

[0024] The preparation method of conductive polymer / graphene composite nanomaterial described in this embodiment specifically comprises the following steps:

[0025] (1) Disperse 50 mg of graphene obtained by chemically reducing graphite oxide into 10 ml of ferric chloride ethanol solution with a mass fraction of 5% and immerse it. Drying at ℃ to obtain ferric chloride-containing graphene.

[0026] (2) The ferric chloride-containing graphene and pyrrole monomer were placed in different positions in the polytetrafluoroethylene liner of the autoclave at a mass ratio of 5:1, and then reacted at 60°C for 12 h.

[0027] (3) After the above reaction product is centrifuged, washed and dried, the polypyrrole / graphene composite nanomaterial is obtained.

Embodiment 2

[0029] The preparation method of conductive polymer / graphene composite nanomaterial described in this embodiment specifically comprises the following steps:

[0030] (1) Disperse 50 mg of graphene obtained by reducing graphite oxide at high temperature and immerse it in 50 ml of 10% iron butanol p-toluenesulfonate solution. After a uniform oxide film is formed on the surface of graphene, centrifuge Then dry at 80° C. to obtain graphene containing iron p-toluenesulfonate.

[0031] (2) The obtained graphene containing iron p-toluenesulfonate and pyrrole monomer were placed in different positions in the polytetrafluoroethylene liner of the autoclave at a mass ratio of 2:1, and then reacted at 80 °C for 4 h.

[0032] (3) After the above reaction product is centrifuged, washed and dried, the polypyrrole / graphene composite nanomaterial is obtained.

Embodiment 3

[0034] The preparation method of conductive polymer / graphene composite nanomaterial described in this embodiment specifically comprises the following steps:

[0035] (1) Disperse 50 mg of graphene obtained by chemically reducing graphite oxide into 80 ml of ferric nitrate aqueous solution with a mass fraction of 15% and immerse it. Dry to obtain iron nitrate-containing graphene.

[0036] (2) The obtained graphene containing iron nitrate and pyrrole monomer were placed in different positions in the polytetrafluoroethylene liner of the autoclave at a mass ratio of 5:1, and then reacted at 50 °C for 24 h.

[0037] (3) After the above reaction product is centrifuged, washed and dried, the polypyrrole / graphene composite nanomaterial is obtained.

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Abstract

The invention provides a preparation method of conducting polymer / grapheme composite nanometer material. The preparation method comprises the following steps that: (1) graphene is dipped in an oxidizing agent solution, and then is centrifugally separated and dried to obtain graphene which contains an oxidizing agent; (2) the graphene which contains the oxidizing agent and a conducting polymer monomer are respectively positioned in different positions in a closed container for reaction; and (3) the reaction product is centrifuged, washed and dried to obtain the conducting polymer / grapheme composite nanometer material. According to the preparation method disclosed by the invention, a solvent is not used, the condition is simple, the purity is high, and the structure of the graphene is not destroyed; film thickness is controllable, and the film thickness can be controlled by changing the proportion of the monomer and the graphene and the time of polymerization; the quality of the film is good, and the film thickness is uniform; the graphene and the conducting polymer have high compatibility due to the conjugate structure of the graphene and the conducting polymer; and the prepared composite material has high conductivity, excellent electrochemistry activity and good cycling stability, and can be applied in the fields of energy sources such as a super capacitor, a lithium battery and the like, and the fields of a sensor and the like.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a preparation method of a conductive polymer / graphene composite nanomaterial. Background technique [0002] Conductive polymers with conjugated π-bonds, such as polyaniline, polypyrrole, polythiophene, and polyacetylene, have the dual advantages of organic conductors and low-dimensional nanostructures, and have high electrical conductivity, specific capacitance, With good electrochemical activity, environmental stability and biocompatibility, it is widely used in the fields of electrode materials, supercapacitors, biosensors, electrochromic and electronic devices, and has been valued by researchers since its discovery. Among numerous conductive polymers, polyaniline has unique electrical and optical properties that change with simple non-redox doping / dedoping, which has attracted extensive attention of researchers. After a simple acid / alkali doping treatm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00B82Y40/00
Inventor 李桂村李岩彭红瑞陈克正
Owner QINGDAO UNIV OF SCI & TECH
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