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Hierarchical pore carbon nanotube, preparation method and application thereof

A technology of carbon nanotubes and hierarchical pores, which is applied in the field of nanomaterials to achieve high nitrogen doping, easy amplification, and guaranteed electrochemical performance

Active Publication Date: 2021-10-08
江门格瑞芬新能源材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the limitations of material morphology, particle size, and pore structure, most of the mesoporous carbon materials in traditional mesoporous materials are distributed deep inside the material and cannot be fully utilized.

Method used

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  • Hierarchical pore carbon nanotube, preparation method and application thereof
  • Hierarchical pore carbon nanotube, preparation method and application thereof
  • Hierarchical pore carbon nanotube, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] The preparation method of the hierarchical porous carbon nanotube material of this example is as follows:

[0083] Weigh 5 mg of one-dimensional silica nanowire material, fully disperse it in a mixture of 3 mL of ethanol and 0.5 mL of deionized water, add 0.15 mL of ammonia water, and mix well. Under stirring, 5 mg of dopamine hydrochloride was added. After 4h, centrifuge, wash and dry. Under nitrogen atmosphere, heat up to 300°C at 5°C / min, keep warm for 2 hours, then continue to heat up to 800°C, keep warm for 2 hours, and cool down naturally. Disperse the obtained powder with 5mol / L HF solution to etch the silicon dioxide in the material, centrifuge, wash and dry to obtain the hierarchically porous carbon nanotubes.

Embodiment 2

[0085] The preparation method of the hierarchical porous carbon nanotube material of this example is as follows:

[0086] Weigh 5 mg of one-dimensional silica nanowire material, fully disperse it in a mixture of 3 mL of ethanol and 0.5 mL of deionized water, add 0.15 mL of ammonia water, and mix well. Under stirring, 5 mg of dopamine hydrochloride and 5 mg of tetraethoxysilane were added. After 4h, centrifuge, wash and dry. Under nitrogen atmosphere, heat up to 300°C at 5°C / min, keep warm for 2 hours, then continue to heat up to 800°C, keep warm for 2 hours, and cool down naturally. Disperse the obtained powder with 5mol / L HF solution to etch all the silicon dioxide components in the material, centrifuge, wash and dry to obtain the hierarchically porous carbon nanotubes.

Embodiment 3

[0088] The preparation method of the hierarchical porous carbon nanotube material of this example is as follows:

[0089] Weigh 5 mg of one-dimensional silica nanowire material, fully disperse it in a mixture of 3 mL of ethanol and 0.5 mL of deionized water, add 0.15 mL of ammonia water, and mix well. With stirring, 5 mg of dopamine hydrochloride and 10 mg of tetraethoxysilane were added rapidly. After 4h, centrifuge, wash and dry. Under nitrogen atmosphere, heat up to 300°C at 5°C / min, keep warm for 2 hours, then continue to heat up to 800°C, keep warm for 2 hours, and cool down naturally. Disperse the obtained powder with 5mol / L HF solution to etch all the silicon dioxide components in the material, centrifuge, wash and dry to obtain the hierarchically porous carbon nanotubes.

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Abstract

The invention discloses a hierarchical pore carbon nanotube, a preparation method and application thereof. The hierarchical pore carbon nano tube is a nitrogen-doped hierarchical pore carbon nano tube and contains a hollow pipeline structure, wherein the tube wall of the hierarchical pore carbon nanotube contains mesopores. According to the hierarchical pore carbon nanotube material provided by the invention, rich mesoporous structures are uniformly distributed on the hollow fiber tube wall, and the hierarchical pore carbon nanotube material has an open pore structure, a relatively high specific surface area and a relatively high nitrogen doping amount; and the preparation process of the hierarchical pore carbon nanotube is simple, is simple and easy to operate, and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a multi-level porous carbon nanotube and its preparation method and application. Background technique [0002] Due to its high specific surface area, rich pore structure, and good electrical conductivity, mesoporous carbon materials have been widely used and researched in the fields of separation and adsorption, energy storage, and electrochemistry (Angew.Chem.Int.Ed. .2008, 47, 3696-3717). Due to the limitations of material morphology, particle size, and pore structure in traditional mesoporous carbon materials, most of the mesopores are distributed deep inside the material and cannot be fully utilized. [0003] As a biologically derived molecule, dopamine has the characteristics of spontaneous oxidative polymerization under alkaline conditions, and has received extensive attention from researchers in recent years, especially for surface modification of materials (Science...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/16B82Y30/00B82Y40/00
CPCC01B32/16B82Y30/00B82Y40/00C01B2202/34C01B2202/36C01B2202/32
Inventor 王亚军张翼
Owner 江门格瑞芬新能源材料有限公司
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