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Carbon nanotube paper and making method thereof

A technology of carbon nanotube paper and carbon nanotubes, which is applied in the direction of nanocarbon, nanotechnology, nanotechnology, etc., can solve the problems of restricting the wide application of carbon nanotube paper, destroying the structure and shape of carbon nanotubes, and reducing the performance of carbon nanotube paper and other issues, to achieve the effect of easy implementation, enhanced electrical conductivity performance, and good electrical conductivity

Inactive Publication Date: 2013-04-10
SHENZHEN NANOTECH PORT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the preparation methods of carbon nanotube paper mainly include suction filtration method, spin coating method, rolling method and chemical vapor deposition method, but in these preparation methods, carbon nanotubes need to be purified by concentrated nitric acid or concentrated sulfuric acid, and the purification process will destroy Structure and shape of carbon nanotubes
Damage to the structure and shape of carbon nanotubes will lead to a decrease in the performance of the final carbon nanotube paper, for example, a decrease in electrical conductivity, which limits the further widespread application of carbon nanotube paper

Method used

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  • Carbon nanotube paper and making method thereof
  • Carbon nanotube paper and making method thereof
  • Carbon nanotube paper and making method thereof

Examples

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Effect test

Embodiment 1

[0027] Take by weighing 1g multi-walled carbon nanotubes, pour into 1000ml TritonX-100 (polyethylene glycol octyl phenyl ether) containing 20% ​​(weight), molecular formula is (C 2 h 4 O) n C 14 h 22 O) In the aqueous solution of the active agent, use ultrasonic vibration and stir for 1 hour to disperse the carbon nanotubes uniformly to form a carbon nanotube suspension. The uniformly dispersed carbon nanotube suspension is filtered through a magnetic filter to obtain a filter cake with certain impurities. Wash the filter cake with ethanol solution (alcohol containing water) to remove the active agent remaining on the surface of the filter cake, and obtain a filter cake without impurities. Finally, the impurity-free filter cake is passed into an oven filled with argon, and continuously heated at 200°C for 5 hours to obtain carbon nanotubes that do not contain impurities, the structure and shape of carbon nanotubes are not damaged, and the carbon nanotubes are evenly arrang...

Embodiment 2

[0030] Weigh 0.1g of single-walled carbon nanotubes and pour into 1000ml of cetyltrimethylammonium bromide containing 30% (weight) (structural formula is C 16 h 33 (CH 3 ) 3 NBr) in an aqueous solution of the active agent, using ultrasonic vibration and stirring for 2 hours to disperse the carbon nanotubes uniformly to form a carbon nanotube suspension. The uniformly dispersed carbon nanotube suspension is filtered through a magnetic filter to obtain a filter cake with certain impurities. Wash the filter cake with isopropanol (molecular formula (CH 3 ) 2 CHOH) aqueous solution to remove the active agent remaining on the surface of the filter cake to obtain a filter cake without impurities. Finally, the impurity-free filter cake is passed into an oven filled with argon, and continuously heated at 200°C for 5 hours, so as to obtain carbon nanotubes without impurities, with the structure and shape of carbon nanotubes undamaged and uniformly arranged. nanotube paper.

[003...

Embodiment 3

[0033] Weigh 0.5g of multi-walled carbon nanotubes and pour into 1000ml of Tween-80 (polyoxyethylene sorbitan monooleate, molecular formula C) containing 40% (weight). 12 h 10 ClNO 3 ) in the active agent aqueous solution, using ultrasonic vibration and stirring for 3 hours, so that the carbon nanotubes are uniformly dispersed to form a carbon nanotube suspension. The uniformly dispersed carbon nanotube suspension is filtered through a magnetic filter to obtain a filter cake with certain impurities. Filter cake with acetylated acetone (structural formula is CH 3 COCH 2 COCH 3 ) by washing with an aqueous solution to remove the active agent remaining on the surface of the filter cake to obtain a filter cake without impurities. Finally, the impurity-free filter cake is passed into an oven filled with argon, and continuously heated at 400°C for 5 hours, so as to obtain carbon nanotubes that do not contain impurities, the structure and shape of carbon nanotubes are not damage...

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Abstract

The invention provides carbon nanotube paper and a making method thereof. The making method of the carbon nanotube paper comprises the steps that a carbon nanotube is mixed with an activating agent, subjected to ultrasonic concussion, and stirred to form suspension liquid of the carbon nanotube firstly; then the suspension liquid is washed, filtered by a magnetic filter, and subjected to continuous heating finally, so that the tightly arranged carbon nanotube paper with a carbon nanotube structure and an undamaged shape is obtained. The carbon nanotube paper has the characteristics of integral structure, uniformity and tightness in arrangement, high electrical conductivity, good mechanical strength and the like; the shape, the size and the thickness of the carbon nanotube paper can be controlled through controlling a raw material ratio, so that different carbon nanotube paper meeting requirements is made. The carbon nanotube paper can serve as anode materials of a super capacitor and a Li ion electrode, and electrode materials in a nanofiltration membrane, a sensor and electrochemical synthesis, thereby having a good application prospect.

Description

【Technical field】 [0001] The invention relates to carbon nanotube paper and a preparation method thereof, in particular to a carbon nanotube paper with no loss of carbon nanotube structure and shape and a preparation method thereof. 【Background technique】 [0002] Since the advent of carbon nanotubes (CNTs) in 1991, due to its unique physical and chemical properties, it has become a research hotspot at home and abroad. Carbon nanotubes have low impedance due to their good mechanical properties and fast electron transfer speed, so they have good application prospects in high-performance composite materials and other fields. Carbon nanotubes are intertwined by the van der Waals force between tubes to form a paper-like carbon nano-thin layer, called carbon nanotube paper (also known as Bucky paper, BP, Bucky paper). Since carbon nanotube paper is a carbon nanotube layer formed by intertwined carbon nanotubes, it is a self-supporting (Free-standing) structure. Compared with car...

Claims

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Application Information

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IPC IPC(8): C01B31/02B82Y30/00B82Y40/00C01B32/15
Inventor 郜天宇梁颖徐丽丽
Owner SHENZHEN NANOTECH PORT
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