Preparation method of carbon nanotube by growing on foamed nickel substrate

A carbon nanotube and nickel foam technology, applied in the direction of carbon nanotube, nanocarbon, nanotechnology, etc., can solve the problems of affecting the power characteristics of electrode materials, large contact resistance, complicated operation, etc., and achieve easy follow-up utilization, low cost, Simple process effect

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

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Problems solved by technology

From material preparation to electrode fabrication, the process has many procedures and complex operations, and

Method used

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  • Preparation method of carbon nanotube by growing on foamed nickel substrate

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example 1

[0013] At room temperature, the nickel foam was cleaned with absolute ethanol in an ultrasonic cleaner, and then cleaned several times with deionized water. With 2MNi(NO 3 ) 2 The solution and ethylene glycol methyl ether were used to prepare a sol, and an appropriate amount of ammonia water was added, stirred at a high speed for 10 hours, and then sealed and left to stand for 10 hours to obtain a green transparent sol. The sol is uniformly coated on the surface of the nickel foam by dipping and pulling method, and the pulling speed is 10 cm / min in this example. 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. Put the nickel foam coated with Ni-containing sol in the chamber of the chemical vapor deposition system, start to heat up, the target temperature is 500°C, feed the reducing gas hydrogen, and keep it for 10 minutes; the furnace temperature continues to rise to 700°C, and at the same time...

example 2

[0015] At room temperature, the nickel foam was cleaned with absolute ethanol in an ultrasonic cleaner, and then cleaned several times with deionized water. With 0.5MNi(NO 3 ) 2 The solution and ethylene glycol methyl ether were used to prepare a sol, and an appropriate amount of ammonia water was added, stirred at a high speed for 10 hours, and then sealed and left to stand for 10 hours to obtain a green transparent sol. The sol is evenly coated on the surface of the nickel foam by dipping and pulling method, and the pulling speed is 20cm / min in this example. After the wet film was heat-treated at 100°C, it was dipped and pulled repeatedly, and the number of times of pulling was 10 times. Put the nickel foam coated with Ni-containing sol in the chamber of the chemical vapor deposition system, start to heat up, the target temperature is 500°C, feed the reducing gas hydrogen, and keep it for 10 minutes; the furnace temperature continues to rise to 700°C, and at the same time ...

example 3

[0017] At room temperature, the nickel foam was cleaned with absolute ethanol in an ultrasonic cleaner, and then cleaned several times with deionized water. With 0.5MNi(NO 3 ) 2 The solution and ethylene glycol methyl ether were used to prepare a sol, and an appropriate amount of ammonia water was added, stirred at high speed for 24 hours, and then sealed and left to stand for 24 hours to obtain a green transparent sol. The sol is evenly coated on the surface of the nickel foam by dipping and pulling method, and the pulling speed in this example is 5 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 3 times. Put the nickel foam coated with Ni-containing sol in the chamber of the chemical vapor deposition system, start to heat up, the target temperature is 500°C, feed the reducing gas hydrogen, and keep it for 10 minutes; the furnace temperature continues to rise to 700°C, and at the same time Bu...

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Abstract

The invention discloses a preparation method of carbon nanotube by growing on a foamed nickel substrate. The method is a plasma chemical vapor deposition method. Nickelate containing Ni element is dissolved in 2-methoxyethanol firstly, a proper amount of ammoniacal liquor is added, after several hours of high speed stirring, a green transparent sol is obtained after sealing and standing. The sol is coated on the foam nickel substrate material. The foamed nickel substrate formed with sol is placed in the vacuum furnace chamber, when the temperature reaches to 500-600 DEG C., hydrogen and nitrogen according to a certain volume ratio which are used as catalyst for carbon nanotube growth are let in to reduce nickel element for keeping 10 minutes. When the temperature reaches to 700-800 DEG C., a carbon source gas is let in, and hydrogen and nitrogen are kept at a certain volume ratio, after 30 minutes reaction, the growth is finished. The carbon nanotube is grown on the foamed nickel. The method has a simple preparation technology process, and the product can be used as electrode material of green energy storage device.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, in particular to a method for growing carbon nanotubes on nickel foam. Background technique [0002] At present, nickel foam is the current collector of electrode materials for green energy storage devices. Many electrode active materials need to be combined with carbon nanotubes to improve their electrical conductivity and reduce the internal impedance of electrodes. Composite electrodes are made by mixing with binders and conductive agents and pressing them onto the electrodes. From material preparation to electrode fabrication, this process has many procedures and complex operations, and there is a large contact resistance, which in turn affects the power characteristics of the electrode material. Therefore, we will directly grow carbon nanotubes on nickel foam as a current collector material. [0003] Carbon nanotubes have attracted much attention because of their unique s...

Claims

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Application Information

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IPC IPC(8): C01B31/02B82Y30/00C22C1/08C23C16/26B01J23/755C01B32/159C01B32/162
Inventor 王修春张晶马婕刘硕伊希斌
Owner NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
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