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Carbon nanotube/polypyrrole composite sponge and preparation method thereof

A carbon nanotube, composite sponge technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve uniform thickness, excellent microstructure, and ingenious effects

Active Publication Date: 2013-12-18
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composite material of polypyrrole and carbon nanotube sponge has not yet been studied. How to optimize the microstructure of the composite material, further improve the electrochemical performance of the composite material through composite means, and broaden its application field is still a research hotspot.

Method used

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  • Carbon nanotube/polypyrrole composite sponge and preparation method thereof
  • Carbon nanotube/polypyrrole composite sponge and preparation method thereof
  • Carbon nanotube/polypyrrole composite sponge and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Set up a chemical vapor deposition reaction furnace, put a quartz substrate in the quartz reaction chamber, and heat it, and at the same time pass 800mL / min argon gas to exhaust the air in the reaction chamber; when the quartz substrate reaches 860 ° C, adjust the argon gas The flow rate is 2000mL / min, 300mL / min hydrogen gas is introduced, 60mg / mL ferrocene / dichlorobenzene carbon source solution is introduced into the reaction chamber, and the feed rate is 0.13mL / min; after 4 hours of reaction, at 100mL / min Under the protection of argon gas, it was cooled with the furnace, and the carbon nanotube sponge in the form of a block was collected on the quartz substrate.

[0035] 2) Cut out 0.5×0.5×0.5cm 3 Submerge the carbon nanotube sponge block in 0.5mol / L pyrrole / acetone solution. After soaking for 30 minutes, the pyrrole is absorbed into the sponge block, and it is taken out for use.

[0036] 3) Set up an electrochemical workstation for the electrochemical polymerizat...

Embodiment 2

[0039]The difference between this example and Example 1 is that in step 3), a sodium perchlorate solution with a concentration of 0.2 mol / L is used. The prepared composite sponge product has a polypyrrole content of 50.3wt%. Figure 3(a) is a comparison of the compression curves of carbon nanotube / polypyrrole composite sponge and carbon nanotube sponge. It can be seen that under the same compression strain, the stress value of the composite sponge increases significantly, and the mechanical properties are enhanced. Figure 3(b) is the compression cycle curve of carbon nanotube / polypyrrole composite sponge, and the compression strain is 50%. From the cycle curve, it can be seen that the composite sponge has good elasticity and structural stability under repeated compression conditions.

Embodiment 3

[0041] The difference between this example and Example 1 is that in step 2), a 0.1 mol / L pyrrole / acetone solution is used. The prepared composite sponge product has a polypyrrole content of 18.2wt%. Figure 4 It is a transmission electron micrograph of the composite sponge, and it can be measured from the figure that the thickness of the polypyrrole layer in the composite sponge is 5-8nm, which is obviously smaller than that of Example 1.

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Abstract

The invention relates to carbon nanotube / polypyrrole composite sponge and a preparation method thereof, belonging to the field of the synthesis and application of carbon nanocomposites. The carbon nanotube / polypyrrole composite sponge is formed through stacking and winding composite tubes with microcosmic core-shell structures and has a porous structure, wherein each composite tube consists of a carbon nanotube and a uniform-thickness polypyrrole layer coated outside the carbon nanotube. The mass content of polypyrrole in the composite sponge is controllable; the composite sponge has good elasticity, good cyclic compression stability and excellent electrochemical properties; the carbon nanotube / polypyrrole composite sponge is prepared by the method which combines a chemical vapor deposition method, an adsorption composite method and an electrochemical polymerization method; the preparation method has ingenious conception and is simple and easy in operation.

Description

technical field [0001] The invention belongs to the field of synthesis and application of carbon nanocomposite materials, and relates to a preparation method of carbon nanocomposite materials, in particular to a carbon nanotube / polypyrrole composite sponge and a preparation method thereof. Background technique [0002] Since carbon nanotubes were discovered by Japanese electron microscope expert S.Iijima in 1991, they have attracted widespread attention because of their unique structure and excellent performance. With carbon nanotube filaments, carbon nanotube films, aligned carbon nanotube arrays, etc., the controllable preparation and synthesis of carbon nanotube macroscopic bodies with different shapes and structures has greatly expanded the application field of carbon nanotubes. The preparation of carbon nano-macro bodies with three-dimensional macro-size will help realize the large-scale application of carbon nanotubes. [0003] Gui Xuchun and others synthesized a carb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/04C08G73/06C08K7/00C08K3/04C25B3/00B82Y30/00
Inventor 李培旭曹安源韦进全朱宏伟王昆林吴德海
Owner TSINGHUA UNIV
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