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Preparation method for directly growing high density carbon nanotube array on carbon fiber paper base bottom

A carbon nanotube array and substrate technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of high-quality production and disadvantages, and achieve the effects of low cost, easy control, and easy subsequent use

Inactive Publication Date: 2013-08-21
NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method reduces the cost of preparing carbon nanotubes, it is not conducive to the production of high-quality carbon nanotube arrays

Method used

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  • Preparation method for directly growing high density carbon nanotube array on carbon fiber paper base bottom

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] The carbon paper was ultrasonically cleaned with dilute hydrochloric acid, acetone, alcohol, and deionized water one by one and dried for use. With 2M Fe(NO 3 ) 3 Solution and ethyl tetrasilicate to prepare a sol, which is prepared by uniformly coating the sol on the surface of carbon fiber paper by the spin coating method. In this example, the spin coating speed is preferably 4000 rpm, and the spin coating time is preferably 1 minute. Place the carbon fiber paper coated with Fe-containing sol in the chamber of the chemical vapor deposition system, start to heat up, the target temperature is 300°C, and keep for 1 hour; the furnace temperature continues to rise to 500°C, and the reducing gas hydrogen is introduced to keep The time is 60 minutes; the furnace temperature continues to rise to 900° C., and methane and nitrogen are introduced at the same time. The hydrogen:methane:nitrogen ratio is 1:4:10. Control the closing degree of the vacuum butterfly valve to ensure ...

example 2

[0017] Carbon paper pretreatment process is the same as example 1. With 1.5M Fe(NO 3 ) 3 Solution and ethyl tetrasilicate to prepare a sol, and the sol was uniformly coated on the surface of carbon fiber paper by dipping and pulling method, and the pulling speed in this example was 10 cm / min. After the wet film was heat-treated at 100°C, it was dipped and pulled repeatedly, and the number of times of pulling was 5 times. Place the carbon fiber paper coated with Fe-containing sol in the chamber of the chemical vapor deposition system, start to heat up, the target temperature is 300°C, and keep for 1 hour; the furnace temperature continues to rise to 500°C, and the reducing gas hydrogen is introduced to keep The time is 60 minutes; the furnace temperature continues to rise to 900° C., and methane and nitrogen are introduced at the same time. The hydrogen:methane:nitrogen ratio is 1:4:10. Control the closing degree of the vacuum butterfly valve to ensure that the air pressure...

example 3

[0019] Carbon paper pretreatment process is the same as example 1. With 1M Ni(NO 3 ) 3 The sol was prepared with methyl orthosilicate, and the sol was evenly coated on the surface of carbon fiber paper by spin coating. In this example, the rotational speed of the spin coating is preferably 5000 rpm, and the spin coating time is preferably 30 seconds. Place the carbon fiber paper coated with Ni-containing sol in the chamber of the chemical vapor deposition system, start to heat up, the target temperature is 300°C, and keep for 1 hour; the furnace temperature continues to rise to 400°C, and the reducing gas hydrogen is introduced to keep The time is 90 minutes; the furnace temperature continues to rise to 750° C., and methane and nitrogen are introduced at the same time. The hydrogen:methane:nitrogen ratio is 1:4:10. Control the closing degree of the vacuum butterfly valve to ensure that the air pressure in the whole reaction process is about 400Pa; after 30 minutes of react...

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Abstract

The invention discloses a preparation method for directly growing high density carbon nanotube array on carbon fiber paper base bottom. The method is a chemical vapor deposition method. Firstly, iron (Fe), cobalt (Co) and nickel (Ni) element containing sol is prepared and coated on carbon fiber paper after pretreatment. The carbon fiber paper base bottom formed with catalyst precursor is placed in the vacuum furnace chamber, and the substrate is heated to a first temperature and maintained for a predetermined time; with the protection gas, the reduction gas is let into the reacting furnace, and the substrate formed with catalyst precursor is heated to a second temperature and maintained for a predetermined time; the mixture of protection gas and carbon source gas is let into the reacting furnace, and is heated to a third temperature, and the high density carbon nanotube array is grown on the surface of the substrate catalyst. The carbon nanotube array can be directly grown on the carbon fiber paper base bottom according to the method, and can be used as electrode material of green energy storage device fuel cell and super capacitor.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, in particular to a method for directly growing carbon nanotube arrays on a carbon fiber paper substrate. Background technique [0002] Carbon nanotubes are typical one-dimensional nanomaterials, which have attracted much attention due to their unique structure, excellent physical and chemical properties and broad application prospects. Carbon nanotubes have good charge transport properties and can be used as electrode materials for green energy storage devices to promote electron transfer, such as fuel cells, supercapacitors, all-vanadium redox flow batteries and organic solar cells, and have broad application prospects. [0003] Generally, the prepared carbon nanotubes are non-oriented and entangled. The excellent diameter ratio and specific surface area of ​​carbon nanotubes are greatly reduced. The excellent properties of many one-dimensional materials cannot be effectively ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82Y30/00C01B32/162
Inventor 张晶王修春马婕刘硕伊希斌
Owner NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
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