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Nitrogen-doped carbon nanotube aerogel material and preparation method thereof

A technology of nitrogen-doped carbon and nanotubes, which is applied in the direction of airgel preparation, carbon nanotubes, nanocarbons, etc., can solve the problems of carbon nanotube materials such as disordered morphology, low specific surface area, and poor hydrophilicity. To achieve the effect of rich active sites, increased specific surface area, and large inner diameter

Inactive Publication Date: 2021-06-18
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the existing carbon nanotube materials used in supercapacitors have relatively disordered morphology, generally small size, poor hydrophilicity and relatively low specific surface area.

Method used

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  • Nitrogen-doped carbon nanotube aerogel material and preparation method thereof
  • Nitrogen-doped carbon nanotube aerogel material and preparation method thereof
  • Nitrogen-doped carbon nanotube aerogel material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] This embodiment provides a method for preparing a nitrogen-doped carbon nanotube airgel material, specifically as follows:

[0036] Dissolve 25g of melamine and 50g of cyanuric acid in 1L of dimethyl sulfoxide respectively, then mix the two solutions at room temperature, centrifuge at 6000r / min, wash with ethanol several times, and dry at 60°C to obtain super Molecular polymers, and then react the supramolecular polymers and sugar compounds synthesized above at a mass ratio of 1:4 under hydrothermal conditions at 180°C for 10 hours, wash with water several times, and dry to obtain supramolecular polymer-based carbon gas condensation glue. Then the obtained airgel is placed in a tube furnace for high-temperature carbonization. The high-temperature carbonization process is to raise the temperature to 900°C at a rate of 5°C / min and keep it at this temperature for 3 hours. After cooling, nitrogen-doped Carbon nanotube airgel materials.

[0037] Scanning electron microscop...

Embodiment 2

[0039] This embodiment provides a method for preparing a nitrogen-doped carbon nanotube airgel material, specifically as follows:

[0040]Dissolve 25g of melamine and 50g of cyanuric acid in 1L of dimethyl sulfoxide respectively, then mix the two solutions at room temperature, centrifuge at 6000r / min, wash with ethanol several times, and dry at 60°C to obtain super Molecular polymers, and then react the supramolecular polymers and sugar compounds synthesized above at a mass ratio of 1:4 under hydrothermal conditions at 160°C for 10 hours, wash with water several times, and dry to obtain supramolecular polymer-based carbon gas condensation glue. Then the obtained supramolecular polymer-based carbon aerogel is placed in a tube furnace for high-temperature carbonization. The high-temperature carbonization process is to raise the temperature to 900° C. at a rate of 5° C. / min and keep it at this temperature for 3 hours. After cooling, the nitrogen-doped carbon nanotube airgel mate...

Embodiment 3

[0042] This embodiment provides a method for preparing a nitrogen-doped carbon nanotube airgel material, specifically as follows:

[0043] Dissolve 25g of melamine and 50g of cyanuric acid in 1L of dimethyl sulfoxide respectively, then mix the two solutions at room temperature, centrifuge at 6000r / min, wash with ethanol several times, and dry at 60°C to obtain super Molecular polymers, and then react the supramolecular polymers and sugar compounds synthesized above with a mass ratio of 1:1 under hydrothermal conditions at 180°C for 10 hours, wash with water several times, and dry to obtain supramolecular polymer-based carbon gas condensation glue. Then the obtained supramolecular polymer-based carbon aerogel is placed in a tube furnace for high-temperature carbonization. The high-temperature carbonization process is to raise the temperature to 900° C. at a rate of 5° C. / min and keep it at this temperature for 3 hours. After cooling, the nitrogen-doped carbon nanotube airgel m...

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Abstract

The invention discloses a nitrogen-doped carbon nanotube aerogel material, a preparation method thereof and an application of the nitrogen-doped carbon nanotube aerogel material in a supercapacitor electrode material. The nitrogen-doped carbon nanotube aerogel material is obtained by taking a supramolecular polymer prepared in an organic solution as a nitrogen source and a carbohydrate compound as a carbon source through hydrothermal reaction and heating carbonization. The nitrogen-doped carbon nanotube aerogel material is of a nanotube structure, and the wall thickness of the nitrogen-doped carbon nanotube aerogel material is uniform. The preparation method comprises the following steps of: mixing a melamine solution and a cyanuric acid solution to obtain a supramolecular polymer; dispersing the supramolecular polymer and a saccharide into a solvent, and carrying out hydrothermal reaction on a mixed solution in a reaction kettle to prepare supramolecular polymer-based carbon aerogel; and carrying out carbonization treatment to obtain the nitrogen-doped carbon nanotube aerogel material. The aerogel material has a unique one-dimensional structure, excellent conductivity and an ultrahigh specific surface area, and a symmetric capacitor assembled by using the electrode material has relatively high specific capacitance, energy density and power density.

Description

technical field [0001] The invention relates to a preparation method of a nitrogen-doped carbon nanotube airgel material, which is used for a capacitor energy storage electrode in an alkaline electrolyte. Background technique [0002] As an emerging electrode material, carbon materials have excellent electrical conductivity, high specific capacitance, and high electrochemical properties. Commonly used carbon materials include graphene, graphyne, carbon quantum dots, carbon nanofibers, carbon nanospheres, and carbon nanotubes. [0003] Due to their special one-dimensional structure, excellent electrical conductivity and unique surface chemical properties, carbon nanotubes have been widely used in various fields such as catalysis, sensing, gas separation and storage, drug delivery and energy storage, and have attracted people's attention. extensive attention. At present, the traditional carbon nanotube preparation methods are mainly chemical vapor deposition and template met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/16B01J13/00H01G11/24H01G11/30H01G11/36
CPCC01B32/16B01J13/0091H01G11/24H01G11/30H01G11/36C01P2004/60C01P2006/12C01P2006/10C01P2006/40C01P2004/03C01P2004/04C01P2004/62Y02E60/13
Inventor 刘建允胡彬商晓红聂鹏飞张柏爽朱国栋黄满红
Owner DONGHUA UNIV