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Self-supporting ultra-thin transparent conductive carbon nanotube film and its preparation method and application

A carbon nanotube film and carbon nanotube technology, applied in the field of material science, can solve the problems of complex post-deposition process and difficulty in self-supporting, and achieve the effects of low environmental factors, good strength, and reduced surface pollution

Active Publication Date: 2017-11-07
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the post-deposition method is the main method for preparing flexible transparent conductive CNTs films reported at home and abroad, but the process of the post-deposition method is complicated, and the obtained CNTs film needs to be attached to the substrate, and it involves a chemical modification process, which affects the electrical properties of the CNTs film. The immeasurable impact of the existence of
In particular, it is difficult to obtain self-supporting, continuous flexible transparent conductive pure CNTs films by post-deposition methods.

Method used

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  • Self-supporting ultra-thin transparent conductive carbon nanotube film and its preparation method and application
  • Self-supporting ultra-thin transparent conductive carbon nanotube film and its preparation method and application
  • Self-supporting ultra-thin transparent conductive carbon nanotube film and its preparation method and application

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preparation example Construction

[0044] Further, the preparation method may include:

[0045] providing one or more CNTs;

[0046] The one or more CNTs are uniformly dispersed in a certain solvent to form a carbon nanotube dispersion (CNTs dispersion).

[0047] Wherein, the CNTs dispersion can be formed by any suitable method known in the art, such as ultrasonic, high-speed stirring and so on.

[0048] In some embodiments, the CNTs dispersion can be formed by ultrasonically dispersing the CNTs, and the ultrasonic dispersion time can be 5h-20h, but not limited thereto.

[0049] In some preferred embodiments, the concentration of the CNTs dispersion is 0.005 mg / mL-0.2 mg / mL.

[0050] Wherein, the one or more kinds of CNTs may be single-wall CNTs, multi-wall CNTs and the like.

[0051] More preferably, the one or more CNTs may be chemically functionalized. The corresponding chemical functionalization methods can be known in the industry, for example, you can refer to "Research on the preparation and catalyti...

Embodiment 1

[0094] 1. Add 0.2g of carboxylated CNTs (see "The effect of carboxylated multi-walled carbon nanotubes on the performance of carbon fiber epoxy resin composites", FRP / Composite Materials, 2010, 1, 136-45. "Carboxylation of carbon nanotubes and its electrochemical performance", 2013, 41(7):149-157) was dissolved in 50mL ethanol / water mixed solvent (v:v=2:1), ultrasonically dispersed for 10h, so that CNTs were evenly dispersed in ethanol solvent , forming a CNTs dispersion;

[0095] 2. Dissolve 2g of dodecyltrimethylammonium bromide in 300mL of ethylene glycol, and disperse ultrasonically for 2 hours to form a dodecyltrimethylammonium bromide solution;

[0096] 3. Dissolve 4g of sodium styrene sulfonate in 300mL of ethanol, and disperse ultrasonically for 2 hours to form a sodium styrene sulfonate solution;

[0097] 4. Add 10mL of ethanol to the watch glass, and then inject 2mL of carboxylated CNTs dispersion to the ethanol interface at a rate of 6mL / min through a peristaltic p...

Embodiment 2

[0106] 1. Dissolve 0.2g of aminated CNTs (refer to CN1927706A, CN101177260A, etc.) in 40mL of ethanol / water mixed solvent (v:v=1:1), and ultrasonically disperse for 8 hours, so that the CNTs are evenly dispersed in the ethanol solvent to form CNTs Dispersions;

[0107] 2. Dissolve 3g of polyquaternium-6 in 300mL of ethylene glycol, and disperse ultrasonically for 2 hours to form polyquaternium-6 solution;

[0108] 3. Take 4g of sodium styrene sulfonate and dissolve it in 200mL of ethanol, and disperse it ultrasonically for 2 hours to form a sodium hexadecylbenzene sulfate solution;

[0109] 4. Add 15mL of ethanol to the watch glass, and then inject 2mL of carboxylated CNTs dispersion to the ethanol interface at a rate of 8mL / min through a peristaltic pump to form a stable and transparent CNTs film;

[0110] 5. Heat the polyquaternium-6 solution to 40°C, and transfer the CNTs film to the interface of the polyquaternium-6 solution with a silicon dioxide sheet, and let it stand ...

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Abstract

The invention discloses a self-supported ultra-thin transparent conductive carbon nanotube film and a preparation method and application thereof. The method obtains a carbon nanotube film by transferring a carbon nanotube dispersion liquid to the surface of a selected solution and removing the selected solution; and forms a carbon nanotube hybridized film by transferring the carbon nanotube film to an ink interface to be self assembled. The self-supported ultra-thin transparent conductive carbon nanotube film has good comprehensive properties, such as a thickness of about 20 nm to 100 nm, surface roughness less than 1.5 nm, light transmittance more than 86%, surface resistance of less than 1500ohm / M2. The preparation process is simple, easy to operate, low in environmental requirements, and does not adversely affect the surrounding environment, and meets the large-scale industrial production and mass production needs.

Description

technical field [0001] The invention relates to a carbon nanotube film material and a preparation process thereof, in particular to a self-supporting ultra-thin transparent conductive carbon nanotube film and its green preparation method and application, belonging to the field of material science. Background technique [0002] Transparent conductive films are widely used as electrodes in electronic fields such as solar photovoltaics, light-emitting diodes, flat-panel displays, and touch screens. At present, the commonly used transparent conductive film is mainly indium tin oxide (ITO) film. However, ITO thin films have outstanding problems such as lack of resources, high price, poor flexibility, and brittleness, which restrict their development. Therefore, it is an inevitable trend to develop new materials to replace ITO. The most promising ITO replacements today include conductive polymers, metal nanowires, and carbon nanotubes. Compared with conductive polymers and metal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00H01B1/04
Inventor 陈涛肖鹏谷金翠张佳玮
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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