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Carbon nanotube composite structure and preparation method thereof

A carbon nanotube composite and carbon nanotube technology, applied in the direction of carbon nanotubes, oriented carbon nanotubes, nanocarbons, etc., can solve the problem of poor deformation resistance of carbon nanotube sponges, achieve good adsorption and reduce capacity Attenuation, the effect of prolonging the cycle life

Active Publication Date: 2020-03-03
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the carbon nanotube sponge is less resistant to deformation

Method used

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  • Carbon nanotube composite structure and preparation method thereof
  • Carbon nanotube composite structure and preparation method thereof
  • Carbon nanotube composite structure and preparation method thereof

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preparation example Construction

[0041] See figure 1 and Figure 9 , the first embodiment of the present invention provides a method for preparing a carbon nanotube composite structure 10, comprising the following steps:

[0042] S11, dispersing a plurality of carbon nanotubes 12 in water to form a carbon nanotube dispersion;

[0043] S12, adding an aniline solution to the carbon nanotube dispersion to form a mixed solution, the aniline solution is formed by dissolving aniline in a solvent;

[0044] S13, adding an initiator to the mixed solution to initiate the polymerization of the aniline to form a carbon nanotube composite structure preform;

[0045] S14, freeze-drying the carbon nanotube composite structure preform in a vacuum environment; and

[0046] S15, after freeze-drying, carbonization is performed under a protective gas to obtain the carbon nanotube composite structure 10 .

[0047] In step S11 , the plurality of carbon nanotubes 12 include single-wall carbon nanotubes 12 , double-wall carbon n...

Embodiment

[0056] Using a cell ultrasonic instrument, 100 mg of carbon nanotubes scraped off from the super-parallel carbon nanotube array and 15 mg of polyvinylpyrrolidone (PVP K90) were ultrasonically dispersed in pure water for 30 minutes to form a uniform carbon nanotube dispersion. Then the carbon nanotube dispersion was transferred to a three-neck flask, cooled with an ice bath and stirred magnetically. Dissolve 150 μL of aniline (ANI, J&K Scientific, 98.5%) in 20 ml of ultrapure water to form an aqueous solution of aniline, and then add 5 mL of hydrochloric acid (0.1 mol L -1 ), forming an aniline solution. Then slowly add the prepared aniline solution into the carbon nanotube dispersion, and continue stirring for 30 minutes after the dropwise addition is completed. Then, 50 mL of ammonium persulfate aqueous solution (ammonium persulfate 368 mg) was slowly added dropwise under vigorous stirring and nitrogen flow, and after stirring for 24 hours, a CNT / PANI hydrogel was formed. T...

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Abstract

The invention relates to a preparation method for a carbon nanotube composite structure, which comprises the following steps of: dispersing a plurality of carbon nanotubes in water to form a carbon nanotube dispersion liquid, adding an aniline solution into the carbon nanotube dispersion liquid to form a mixed liquid, the aniline solution comprising aniline, adding an initiator into the mixed solution, polymerizing the aniline into polyaniline under the action of the initiator, and forming a carbon nanotube composite structure prefabricated body, carrying out freeze drying on the carbon nanotube composite structure prefabricated body in a vacuum environment, and carrying out freeze drying, and carbonizing under a protective gas. The invention also relates to the carbon nanotube composite structure prepared by the preparation method.

Description

technical field [0001] The invention relates to a carbon nanotube composite structure and a preparation method thereof. Background technique [0002] Since the early 1990s, nanomaterials represented by carbon nanotubes have attracted great attention due to their unique structures and properties. In recent years, with the continuous deepening of research on carbon nanotubes and nanomaterials, their broad application prospects continue to emerge. For example, due to the unique electromagnetic, optical, mechanical, and chemical properties of carbon nanotubes, a large number of researches on their application in fields such as field emission electron sources, sensors, new optical materials, soft ferromagnetic materials, and lithium batteries have been continuously studied. reports. [0003] With the emergence of lithium / sulfur (Li / S) batteries, the application of carbon nanotubes in Li / S batteries is a hot spot of concern. Li / S battery is a kind of lithium battery in which su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/66B82Y30/00
CPCH01M4/667H01M4/663B82Y30/00C01B32/174B82Y40/00C01B2202/08C01B2202/22C01B2202/26C01B2202/34C01P2004/13C01P2004/03C01P2004/04C01P2006/40C01B2202/36
Inventor 张跃钢贾鲁婕王健吴扬范守善
Owner TSINGHUA UNIV
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