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Polyaniline/carbon nanotube/cotton fabric composite flexible electrode with high specific capacitance, and preparation and application thereof

A technology of carbon nanotubes and high specific capacitance, which is used in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, etc. Effect

Inactive Publication Date: 2017-07-21
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on flexible electrodes, so it is very promising to use the synergistic effect of polyaniline and carbon nanotubes combined with cotton fabrics to prepare high-performance flexible electrodes.

Method used

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  • Polyaniline/carbon nanotube/cotton fabric composite flexible electrode with high specific capacitance, and preparation and application thereof
  • Polyaniline/carbon nanotube/cotton fabric composite flexible electrode with high specific capacitance, and preparation and application thereof
  • Polyaniline/carbon nanotube/cotton fabric composite flexible electrode with high specific capacitance, and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of carbon nanotube solution:

[0033] Add carboxylated carbon nanotubes to deionized water, then add sodium dodecylbenzenesulfonate (total ratio of carbon nanotubes is 1:1), stir, ultrasonic 1h, and finally use a homogenizer to disperse, A carbon nanotube dispersion was obtained.

[0034] (2) Preparation of carbon nanotube / cotton composite:

[0035] Immerse the cotton fabric in the prepared carbon nanotube solution (preferably the surface is impregnated) and place it in an infrared proofer for treatment. The treatment condition is 5°C / min to 135°C for 70min; then take it out and place it in an oven at 100°C Tumble dry on medium; finish with water rinse and line dry at room temperature.

[0036] (3) Preparation of polyaniline / carbon nanotube / cotton composite:

[0037] Soak 0.5g carbon nanotube / cotton composite in 200mL mixed solution containing 0.5mol / L hydrochloric acid and 0.25mol / L aniline for 1h, then add 40mL 0.25mol / L ammonium persulfate solution...

Embodiment 2、3

[0043] The operation process is the same as that of Example 1, but the performance of the material under different conditions is discussed, because different electrolyte concentrations will stimulate different energy storage capabilities of the electrode material. The sodium chloride concentration that embodiment 2 adopts is 4mol L -1 , the concentration of the sodium chloride that embodiment 3 adopts is 6mol L -1 .

[0044] In the above examples, carbon nanotubes were purchased from Beijing Boyu Co., Ltd., and the performance parameters are shown in Table 1. All other reagents used were of analytical grade and no further purification was required during use. The infrared proofing machine was purchased from Suzhou Starle Printing and Dyeing Machinery Co., Ltd., the instrument model is DL-6000Plus (Starle-3); use the RTS-9 double electric measuring four-probe tester (Guangzhou Simei Technology Co., Ltd.) to test the square resistance . The electrochemical workstation CHI660...

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Abstract

The invention relates to a polyaniline / carbon nanotube / cotton fabric composite flexible electrode with high specific capacitance, and preparation and application thereof. The preparation comprises the steps: enabling a carbon nanotube to be carried by cotton fabric, carrying out the chemical plating of polyaniline, and obtaining a polyaniline / carbon nanotube / cotton fabric compound; adding a carboxylation carbon nanotube to deionized water, adding sodium dodecyl benzene sulfonate, carrying out the stirring, supersonic and dispersing operation, and obtaining carbon nanotube dispersion liquid; enabling the cotton fabric to be immersed in the carbon nanotube dispersion liquid for processing, then taking out the cotton fabric for drying, washing and airing under the room temperature, obtaining a carbon nanotube / cotton fabric compound, enabling the carbon nanotube / cotton fabric compound to be immersed in mixed liquid of hydrochloric acid and phenylamine for 0.5-1.5 hour, adding ammonium persulfate solution, carrying out the polymerization reaction, washing and airing under the room temperature, and obtaining the electrode. The electrode prepared through the above method is light in weight and is flexible, and the method is high in efficiency. All materials used in an experiment are commercial products, thereby greatly improving the preparation feasibility and industrialization. The method is very good in prospect.

Description

technical field [0001] The invention belongs to the field of electrode materials and their preparation and application, in particular to a polyaniline / carbon nanotube / cotton fabric composite flexible electrode with high specific capacitance and its preparation and application. Background technique [0002] Flexible supercapacitors have become the focus of research in recent years due to their fast charge-discharge performance and good bending performance, and are used in many fields, such as multi-functional portable electronic devices, military equipment, and smart clothing. For flexible supercapacitors, flexible electrodes are an important part of its composition. There are many types of flexible substrates used in the preparation of flexible electrodes, among which cotton fabrics have become the research favorite of textile fabrics because of their low price and easy availability of raw materials; at the same time, cotton fabrics have a large number of hydrophilic groups,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/30H01G11/36H01G11/48
CPCY02E60/13H01G11/86H01G11/24H01G11/30H01G11/36H01G11/48
Inventor 郝天琪俞丹王炜
Owner DONGHUA UNIV
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