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Carbon-based composite fiber electrode material, manufacturing method and application thereof

A carbon-based composite fiber and electrode material technology, which is applied in hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, capacitor manufacturing, etc., can solve the problems of carbon nanotube fibers being easily damaged and cumbersome processes, and achieve increased capacitance , Improve the effect of active area

Active Publication Date: 2013-07-10
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the cumbersome process of preparing electrode materials by in-situ deposition and the disadvantages that carbon nanotube fibers are easily damaged, the present invention provides a method for preparing conductive polymer and carbon nanotube composite fiber electrode materials with simple process and low cost. Conductive polymer composite fiber electrode material prepared by this method and its application in supercapacitors

Method used

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  • Carbon-based composite fiber electrode material, manufacturing method and application thereof
  • Carbon-based composite fiber electrode material, manufacturing method and application thereof
  • Carbon-based composite fiber electrode material, manufacturing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] 50 mg of carbon nanotubes (Chengdu Institute of Organic Chemistry) and sodium deoxycholate (Sinopharm Chemical Reagent Company) were weighed, dispersed in 10 mL of deionized water, and ultrasonicated at a power of 200 W for 2 h.

[0067] The concentration to 20mL is 1molL -1Aniline monomer (Sinopharm Chemical Reagent Co., Ltd., analytically pure) was added to the HCl aqueous solution to obtain a concentration of 0.1molL -1 Aniline monomer solution. 1molL to 18mL -1 Potassium hydrogen iodate (Sinopharm Chemical Reagent Company) was added to the HCl aqueous solution to obtain a concentration of 0.0125molL -1 solution of potassium hydrogen iodate. The two solutions were mixed and reacted at 25°C for 3h. Then put the reaction solution into a dialysis bag and dialyze for 3 days under magnetic stirring.

[0068] Weigh 10g of polyvinyl alcohol (Sinopharm Chemical Reagent Co., Ltd.), add 100mL of deionized water, and stir and dissolve on a heating and stirring table at 85°...

Embodiment 2

[0071] Polyaniline nanowires and carbon nanotube composite fiber electrode materials are prepared according to the method of Example 1, the difference is that the carbon nanotube dispersion and the dialyzed carbon nanotube dispersion are mixed at a mass ratio of 2:1 A polyaniline dispersion was used to prepare composite fibers with a diameter of 50 microns.

Embodiment 3

[0073] Prepare polyaniline nanowire arrays and graphene composite fiber electrode materials according to the method of Example 1, the difference is that the micro-injection pump pushes the dispersion liquid and the coagulation bath syringe at a speed of 0.5mL / h and 30mL / h respectively, and prepares a diameter of 40 Micron composite fibers.

[0074] Performance Testing

[0075] The cyclic voltammetric characteristics of the polyaniline nanowire carbon nanotube composite fiber electrode material prepared by cyclic voltammetry test embodiment 1 (see Figure 6 )

[0076] From Figure 6 It can be seen that compared with simple carbon nanotube fiber electrode materials, polyaniline nanowires and carbon nanotube composite fiber electrode materials provided by the invention show better cyclic voltammetry curves, and the area included in the cyclic voltammetry curves The larger the value, the higher the capacitance of the electrode material.

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Abstract

The invention relates to a single-step manufacturing method of a carbon-based composite fiber electrode material and the carbon-based composite fiber electrode material manufactured by the single-step manufacturing method of the carbon-based composite fiber electrode material. The electrode material comprises a conductive polymer and a carbon-based material, and the conductive polymer is distributed in the carbon-based composite material in the mode of conductive polymer nanowires. The diameter of the conductive polymer nanowires is 40 nm to 100 nm, and the length of the conductive polymer nanowires is 1 micron to 10 microns. The manufacturing method of the carbon-based composite fiber is novel in technology, and concise in method, and greatly simplifies steps of the preparation of the electrode materials. The carbon-based composite fiber electrode material is large in specific surface area and good in suppleness, and greatly improves volume of a super capacitor and mechanical capacity of the super capacitor.

Description

technical field [0001] The invention relates to a one-step method for preparing a carbon-based composite fiber electrode material, and the carbon-based composite fiber electrode material prepared by the method and its application in supercapacitors. Background technique [0002] Carbon nanotubes have excellent electrical properties, high thermal conductivity, good thermal and chemical stability, high specific surface area and low density, etc. However, in order to give full play to the above-mentioned superior properties of carbon nanotubes, they must be assembled into macrostructures, such as fibers, ribbons, films, etc. Traditional fiber forming technologies mainly include melt spinning, solution spinning and solid phase spinning, etc. Most synthetic fibers are formed by liquid phase spinning. However, carbon nanotubes have a high degree of thermal stability due to the strong SP2 hybrid bonds in the tube wall and the van der Waals force between the tubes, and do not have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/38H01G11/48H01G11/86H01G13/00
CPCY02E60/13
Inventor 魏志祥孟庆海
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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