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Preparation method of poly(3,4-ethylenedioxythiophene) (PEDOT)-coated carbon nanotube composite material

A technology of carbon nanotubes and dioxyethyl, which is applied in the field of carbon materials and conductive polymer composite materials, can solve the problems of small reaction area, difficult control of repeatability, unfavorable large-scale production, etc., and achieve good application prospects and methods Simple, easy-to-use effects for large-scale compositing

Inactive Publication Date: 2011-11-23
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The advantage of the electrochemical method is that it is easy to obtain a highly ordered composite array or a nanostructured composite material with a very small size, but the electrochemical method itself has certain limitations, such as the stability and repeatability of the experiment are difficult to control and The reaction area is small, which is not conducive to large-scale production, etc.

Method used

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  • Preparation method of poly(3,4-ethylenedioxythiophene) (PEDOT)-coated carbon nanotube composite material
  • Preparation method of poly(3,4-ethylenedioxythiophene) (PEDOT)-coated carbon nanotube composite material

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Experimental program
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Effect test

Embodiment 1

[0019] a) ultrasonically dispersing carboxy-functionalized multi-walled carbon nanotubes (COOH-MWCNTs) in deionized water to obtain a multi-walled carbon nanotube dispersion with a solid content of 0.3 wt %;

[0020] b) Iron trichloride (FeCl 3 ) was dissolved in deionized water, stirred and dissolved to obtain an orange-yellow aqueous solution containing a concentration of 16mol / L ferric chloride;

[0021] c) Using p-xylene as a solvent, take the surfactant di(2-ethylhexyl) sodium succinate sulfonate (AOT) and dissolve it in p-xylene, and dissolve it by ultrasonication and continuous stirring to obtain the surfactant A solution with an AOT concentration of 1.3mol / L;

[0022] d) Add the multi-walled carbon nanotube dispersion obtained in step a) to the solution obtained in step c), and ultrasonically disperse and stir until the multi-walled carbon nanotubes are uniformly dispersed in the mixed system; under stirring conditions, add The obtained orange-yellow aqueous solution...

Embodiment 2

[0026] a) ultrasonically dispersing carboxy-functionalized multi-walled carbon nanotubes (COOH-MWCNTs) in deionized water to obtain a multi-walled carbon nanotube dispersion with a solid content of 1.5 wt %;

[0027] b) Iron trichloride (FeCl 3) was dissolved in deionized water, stirred and dissolved to obtain an orange-yellow aqueous solution that contained a concentration of 13mol / L ferric chloride;

[0028] c) Using p-xylene as a solvent, take the surfactant AOT and dissolve it in p-xylene, ultrasonically and continuously stir to dissolve it, to obtain a solution with a concentration of the surfactant AOT of 1.4mol / L;

[0029] d) Add the multi-walled carbon nanotube dispersion obtained in step a) to the solution obtained in step c), and ultrasonically disperse and stir until the multi-walled carbon nanotubes are uniformly dispersed in the mixed system; under stirring conditions, add The obtained orange-yellow aqueous solution containing ferric chloride in step b) is fully ...

Embodiment 3

[0033] a) ultrasonically dispersing carboxy-functionalized multi-walled carbon nanotubes (COOH-MWCNTs) in deionized water to obtain a multi-walled carbon nanotube dispersion with a solid content of 3 wt %;

[0034] b) Iron trichloride (FeCl 3 ) was dissolved in deionized water, stirred and dissolved to obtain an orange-yellow aqueous solution that contained a concentration of 12mol / L ferric chloride;

[0035] c) Using p-xylene as a solvent, take the surfactant AOT and dissolve it in p-xylene, ultrasonically and continuously stir to dissolve it, to obtain a solution with a concentration of the surfactant AOT of 1.6mol / L;

[0036] d) Add the multi-walled carbon nanotube dispersion obtained in step a) to the solution obtained in step c), and ultrasonically disperse and stir until the multi-walled carbon nanotubes are uniformly dispersed in the mixed system; under stirring conditions, add The obtained orange-yellow aqueous solution containing ferric chloride in step b) is fully s...

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Abstract

The invention belongs to the fields of carbon materials and electroconductive polymer composite materials, and relates to a preparation method of a poly(3,4-ethylenedioxythiophene) (PEDOT)-coated carbon nanotube composite material. The preparation method comprises: adding an oxidant solution, a carbon nanotube dispersion and a 3,4-ethylenedioxythiophene (EDOT) monomer to a three-phase system of an organic solvent, a surfactant and water, and carrying out an in-situ chemical polymerization reaction. The preparation method provided by the invention is simple, feasible and controllable, and is beneficial to large-scale synthesis. The composite material obtained in the invention has high electrical conductivity and higher specific surface area, so that the composite material is expected to have good application prospects in the fields of energy storage devices (including super capacitors, lithium ion cells and the like), sensors and the like.

Description

technical field [0001] The invention belongs to the field of carbon materials and conductive polymer composite materials, and relates to a preparation method of carbon nanotubes and polythiophene conductive polymer composite materials, in particular to an in-situ chemical method based on a three-phase system of organic solvent, surfactant and water. A method for preparing a composite material of carbon nanotubes coated with poly(3,4-dioxyethyl)thiophene (PEDOT) with excellent electrical properties by a polymerization method. Background technique [0002] Conductive polymers are expected to be used in energy storage devices, light-emitting devices, sensor devices, electrochromic devices, etc. due to their diverse polymer structures, easy processing, and low price, as well as the electrical properties of semiconductors and metals. It has attracted extensive attention of scientists at home and abroad. Carbon nanotube (CNT), due to its unique structure and physical and chemical...

Claims

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Application Information

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IPC IPC(8): C08G61/12C08K13/04C08K7/00C08K3/04
Inventor 胡秀杰白晓霞周树云严峻孙承华陈萍
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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