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A kind of carbon nanotube-carbon airgel composite material and preparation method thereof

A carbon nanotube and carbon aerogel technology, which is applied in the field of carbon nanotube-carbon aerogel composite materials and their preparation, can solve the problems of poor mechanical properties, large specific surface area, and poor electrical conductivity of carbon aerogel, and achieves Low cost, large specific surface area and uniform distribution

Active Publication Date: 2019-07-05
NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the above-mentioned deficiencies, the object of the present invention is to provide a carbon nanotube-carbon aerogel composite material with a large specific surface area, high porosity, uniform pore size, uniform distribution matrix reinforcement, carbon nanotube-carbon aerogel composite Materials The carbon nanotubes with excellent conductive properties are uniformly implanted into carbon aerogels to solve the problems of poor mechanical properties, low strength and poor electrical conductivity of carbon aerogels

Method used

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  • A kind of carbon nanotube-carbon airgel composite material and preparation method thereof
  • A kind of carbon nanotube-carbon airgel composite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] This embodiment includes the following steps:

[0034] (1) Add a certain proportion of multi-walled carbon nanotubes to 1.0% agarose sol, then add 4% citric acid to make the sol gel; put the gel at the bottom into deionized water and filter to obtain sol dispersion liquid; use sodium lauryl sulfate to remove impurities on the surface of the sol; separate the nanotubes from the agarose to obtain a uniformly dispersed carbon nanotube dispersion;

[0035] (2) Mix konjac glucomannan cellulose and deionized water in a mass ratio of 1% evenly and magnetically stir for 1 hour at room temperature until a transparent sol solution is obtained;

[0036] (3) adding the carbon nanotube dispersion liquid in the step (1) to the sol of the step (2) according to a certain ratio, and magnetically stirring at a constant temperature for 2 hours to obtain a uniformly mixed carbon nanotube-konjac glucomannan sol solution;

[0037] (4) The carbon nanotube-konjac glucomannan sol solution in s...

Embodiment 2

[0040] (1) adding a certain proportion of carbon nanotubes to 0.6% agarose sol, and then adding 2% citric acid to make the sol gel; put the gel at the bottom into deionized water and filter to obtain the sol dispersion; Use sodium lauryl sulfate surfactant to remove impurities on the surface of the sol; separate nanotubes from agarose to obtain a uniformly dispersed carbon nanotube dispersion;

[0041] (2) Mix chitosan cellulose and deionized water in a mass ratio of 3% evenly and magnetically stir for 1-2 hours at room temperature until a transparent sol solution is obtained;

[0042] (3) adding the carbon nanotube dispersion liquid in the step (1) to the sol of the step (2) according to a certain ratio, and magnetically stirring at a constant temperature for 1.5h to obtain a uniformly mixed carbon nanotube-chitosan sol solution;

[0043](4) The carbon nanotube-chitosan sol solution in the step (3) was left to stand for 24 hours, placed in an environment of -40° C. for 24 hou...

Embodiment 3

[0046] (1) Add a certain proportion of single-walled carbon nanotubes to 1.0% agarose sol, then add 3% citric acid to make the sol gel; put the gel at the bottom into deionized water and filter to obtain sol dispersion liquid; use polyvinylpyrrolone surfactant to remove impurities on the surface of the sol; separate the nanotubes from the agarose to obtain a uniformly dispersed carbon nanotube dispersion;

[0047] (2) Mix sodium alginate cellulose and deionized water at a mass ratio of 2% evenly and magnetically stir for 1 hour at room temperature until a transparent sol solution is obtained;

[0048] (3) adding the carbon nanotube dispersion liquid in the step (1) to the sol in the step (2) according to a certain ratio, and magnetically stirring at a constant temperature for 1 hour to obtain a uniformly mixed carbon nanotube-sodium alginate sol solution;

[0049] (4) The carbon nanotube-sodium alginate sol solution in step (3) was left to stand for 20 hours, placed in an envi...

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Abstract

The invention discloses the steps of preparation of a carbon nano tube dispersion, preparation of a carbon nano tube-polysaccharide sol solution, preparation of a carbon nano tube-carbon aerogel and activation treatment and high-temperature carbonization. The method is simple in operation, low in cost, green and environment-friendly. A carbon nano tube-carbon aerogel composite material obtained through the method has excellent performance of a carbon nano tube, also has a special edge structure with an adjustable form and shape, has the advantages of being large in specific surface area, high in porosity, uniform in pore size and uniform in distribution, and can be applied to the fields of a catalyst carrier material, an adsorbing material, a high-performance super-capacitor and a lithium-ion battery electrode material.

Description

technical field [0001] The invention belongs to the technical field of novel nanoporous material-carbon aerogel, and in particular relates to a carbon nanotube-carbon aerogel composite material and a preparation method thereof. Background technique [0002] Carbon airgel is a porous material with high porosity, light weight, large specific surface area, controllable structure, stable physical and chemical properties, and high electrical conductivity. It is widely used as catalyst carrier, adsorption material, and various electrode materials. , is considered to be one of the ten most potential new materials in the future, and has become a research hotspot. [0003] The carbon airgel preparation method is mainly divided into two parts: one is to prepare a wet gel, and the other is to dry the wet gel by supercritical extraction or freeze-drying technology to obtain a dry gel. The advantage of this preparation method is that the original network skeleton structure can be mainta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/00C04B35/80C04B35/52
CPCC04B35/52C04B38/0045C04B2235/5288
Inventor 范会利伊希斌张晶琚伟王启春刘本学沈晓冬
Owner NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
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