Doped carbon aerogel material as well as preparation method and application thereof

A carbon aerogel, doped technology, applied in the field of porous materials, to achieve the effects of large pore volume, wide pore size, and high specific surface area

Active Publication Date: 2018-07-03
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of doped carbon aerogels by monomer polymerization under high-salt conditions has not been reported

Method used

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  • Doped carbon aerogel material as well as preparation method and application thereof
  • Doped carbon aerogel material as well as preparation method and application thereof
  • Doped carbon aerogel material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Dissolve 3 g of zinc chloride in 5 mL of ultrapure water to obtain a high-salt zinc chloride solution, add 0.01 mol of pyrrole and 0.03 mol of formaldehyde monomer, and stir in an ice-water bath for 2 min to make it fully mixed. Polymerize the obtained mixed solution in an oil bath at 105°C and react for 24 hours to obtain a pyrrole-formaldehyde gel material containing zinc chloride; place the obtained pyrrole-formaldehyde gel material containing zinc chloride in an oven at 80°C After drying, the pyrrole-formaldehyde block material containing zinc chloride can be obtained.

[0046] Put the pyrrole-formaldehyde block material containing zinc chloride in a high-temperature tube furnace protected by nitrogen, and raise the temperature to 900°C at a rate of 10°C / min; activate the reaction at 900°C for 2 hours; The temperature is lowered to room temperature at a certain rate, and nitrogen-doped carbon aerogels are obtained.

[0047] The specific surface area of ​​the materi...

Embodiment 2

[0049] Dissolve 5g of zinc chloride in 5mL of ultrapure water to obtain a high-salt zinc chloride solution, add 0.01mol of pyrrole and 0.03mol of formaldehyde monomer, stir in an ice-water bath for 2min, and make it fully mixed. Polymerize the resulting mixture in an oil bath at 105°C and react for 12 hours to obtain a pyrrole-formaldehyde gel material containing zinc chloride; place the obtained pyrrole-formaldehyde gel material containing zinc chloride in an oven at 80°C After drying, the pyrrole-formaldehyde block material containing zinc chloride can be obtained.

[0050] Put the pyrrole-formaldehyde block material containing zinc chloride in a high-temperature tube furnace protected by nitrogen, and raise the temperature to 800°C at a rate of 5°C / min; activate the reaction at 800°C for 3 hours; The temperature is lowered to room temperature at a certain rate, and nitrogen-doped carbon aerogels are obtained.

[0051] The specific surface area of ​​the material measured by...

Embodiment 3

[0053] Dissolve 5g of zinc chloride in 5mL of ultrapure water to obtain a high-salt zinc chloride solution, add 0.01mol of pyrrole and 0.03mol of formaldehyde monomer, stir in an ice-water bath for 2min, and make it fully mixed. Polymerize the resulting mixture in an oil bath at 105°C and react for 12 hours to obtain a pyrrole-formaldehyde gel material containing zinc chloride; place the obtained pyrrole-formaldehyde gel material containing zinc chloride in an oven at 80°C After drying, the pyrrole-formaldehyde block material containing zinc chloride can be obtained.

[0054] Place the pyrrole-formaldehyde block material containing zinc chloride in nitrogen, and raise the temperature to 900°C at a rate of 5°C / min; activate the reaction at 900°C for 2 hours; cool down to room temperature at a rate of 5°C / min, That is, nitrogen-doped carbon aerogels are obtained.

[0055] Relevant experiments were carried out on the nitrogen-doped carbon airgel material prepared in Example 3, a...

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Abstract

The present invention provides a doped carbon aerogel material. The doped carbon aerogel material has a porous structure, a heteroatom is doped in the doped carbon aerogel material, the heteroatom isone or more of a nitrogen heteroatom, a sulfur heteroatom, and a phosphorus heteroatom, and the doped carbon aerogel material has a specific surface area of 1000-3000m<2>/g. The present invention alsoprovides a preparation method and application of the doped carbon aerogel material. The doped carbon aerogel material provided by the present invention has the characteristics of a large specific surface area, a wide pore size and the like, and the doped carbon aerogel material has the high specific surface area, a large pore volume, a three-dimensional porous structure, and excellent gas-adsorbing performance and electrochemical properties. Tests show that the material provided by the present invention has an adsorption capacity of 50-300mg/g at the condition of 273K and 1.0 bar; and a capacitor prepared from the material has an electrochemical capacitance of 50-250F/g at a current density of 0.1-10A/g.

Description

technical field [0001] The invention belongs to the field of porous materials, and in particular relates to a doped porous carbon material and its preparation and application. Background technique [0002] Carbon-based functional materials have been extensively studied due to their various outstanding features such as good electrical conductivity, excellent thermal stability, and chemical properties. These properties make them competitive materials in areas such as energy storage / conversion, gas adsorption, water treatment, and catalysis. High porosity is a very critical property for most of the above applications. Therefore, it is very necessary to prepare carbon-based functional materials with high porosity. Carbon aerogels are a class of three-dimensional porous carbon materials, usually with high specific surface area, large pore volume, and interconnected porous structure. At present, there have been articles reporting the preparation of carbon aerogels with precurso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05B01J20/20B01J20/28B01D53/02H01G11/32
CPCB01D53/02B01D2257/102B01D2257/108B01D2257/504B01D2257/7025B01J20/20B01J20/28047H01G11/32Y02C20/20Y02C20/40
Inventor 隋竹银曾凡月韩宝航
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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