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Preparation method for dispersing carbon nanotubes and application

A technology of carbon nanotubes and double-walled carbon nanotubes, which is applied in the fields of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of destroying the surface structure of carbon nanotubes, affecting the performance of carbon nanotubes, etc., and achieves good electrical conductivity. Effect

Inactive Publication Date: 2016-07-06
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Covalent functionalization generally requires the use of a large amount of solvent, which destroys the surface structure of carbon nanotubes and affects the performance of carbon nanotubes.

Method used

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  • Preparation method for dispersing carbon nanotubes and application
  • Preparation method for dispersing carbon nanotubes and application
  • Preparation method for dispersing carbon nanotubes and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take double-walled carbon nanotube aggregates, wrap them on the surface of the platinum net, connect the platinum net to the positive pole of the DC power supply, and use it as the positive pole of the electrolysis, take another platinum net and connect it to the negative pole of the DC power supply, and use it as the negative pole of the electrolysis, and then immerse the two electrodes in 1M H 2 SO 4 Electrolyte, adjust the DC power supply, apply a voltage of 5V to the two electrodes, observe that bubbles are generated on the surfaces of the two electrodes, and carbon nanotubes disperse and diffuse into the electrolyte. figure 1 , after filtration and purification to obtain ionized and dispersed carbon tubes, and then under the action of ultrasound, disperse the carbon tubes into water to obtain a carbon tube water dispersion, as attached figure 2 , and then use the filtration method to obtain bucky paper, as attached image 3 .

Embodiment 2

[0025] Same as Example 1, changing the electrolytically separated carbon nanotubes to single-walled carbon nanotubes to obtain dispersed single-walled carbon nanotubes.

Embodiment 3

[0027] Same as Example 1, changing the electrolytically separated carbon nanotubes to multi-walled carbon nanotubes to obtain dispersed multi-walled carbon nanotubes.

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Abstract

The invention discloses a preparation method for dispersing carbon nanotubes and an application. The preparation method is characterized by adopting an electrolytic separation method and utilizing a process of intercalating ions among carbon tube walls to disperse the carbon nanotubes to obtain carbon nanotube dispersion liquid, wherein a two-electrode electrolytic cell is adopted in the electrolytic separation method; carbon tubes are single-walled carbon nanotubes, double-walled carbon nanotubes and multiwalled carbon nanotubes; the electrode comprises a positive electrode and a negative electrode; the positive electrode is carbon nanotubes to be dispersed and the negative electrode is inert metals including platinum and titanium. The preparation method has the advantages that the carbon tubes are separated by adopting the simple electrolytic separation method, namely intercalating ion groups among the carbon tube walls; the preparation method is short in required time and simple in equipment, is green and environmentally friendly, can achieve efficient dispersion of the carbon nanotubes and has an industrial application prospect.

Description

technical field [0001] The invention relates to a method for dispersing carbon nanotubes, which belongs to the technical field of carbon nanotube applications. Background technique [0002] Carbon nanotubes are hollow one-dimensional nanomaterials rolled from graphene. They have excellent mechanical properties, electrical conductivity, large specific surface area, good chemical stability and other multifunctional properties. They can be applied to high-performance composite materials, fields such as supercapacitors and batteries. However, carbon tubes have a large specific surface area, strong mutual van der Waals force, and are easy to agglomerate and gather into bundles, which limits their application and potential performance. At present, the dispersion of carbon tubes is mainly realized by surface functionalization, which includes covalent functionalization and non-covalent functionalization. Non-covalent functionalization generally uses surfactants, which are loaded o...

Claims

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Application Information

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IPC IPC(8): C01B31/02B82B3/00H01M4/583H01M4/1393
CPCB82B3/00H01M4/1393H01M4/583Y02E60/10
Inventor 冯建民李德军
Owner TIANJIN NORMAL UNIVERSITY