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Carbon nanofiber composite material with controllable structure and preparation method and application therefor

A carbon nanofiber and composite material technology, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc. Simple, good cycle stability effect

Active Publication Date: 2016-08-17
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problems of the prior art that the process is complex, the operation is difficult, and cannot be applied on a large scale, and provides a structure-controllable carbon nanofiber composite material and its Preparation method and application

Method used

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  • Carbon nanofiber composite material with controllable structure and preparation method and application therefor
  • Carbon nanofiber composite material with controllable structure and preparation method and application therefor
  • Carbon nanofiber composite material with controllable structure and preparation method and application therefor

Examples

Experimental program
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Effect test

Embodiment 2

[0033] Dissolve 2g PAN and 0.4g phosphoric acid in DMF to prepare spinning liquid, the electrospinning voltage is 16KV, the injection speed is 0.3mol / h, the rotation speed is 1400r / s, the ambient temperature is kept between 25°C and 30°C, and the humidity is kept Between 20% and 30%. The uniaxial spinning time was 10 hours, and the desired polyacrylonitrile-based nanofiber film was obtained. The resulting spun film was pre-oxidized at 270° C. and carbonized at 800° C. to obtain nitrogen / phosphorus co-doped carbon nanofibers. Soak 0.1g of nitrogen / phosphorus co-doped carbon nanofibers in 200ml of phosphoric acid solution dissolved with 15mmol of aniline monomer, stir for 30 minutes until the nitrogen / phosphorus co-doped carbon nanofibers are well dispersed, and dissolve 200ml with 15mmol of ammonium persulfate (monomer: initiator = 1:1) phosphoric acid solution was slowly added dropwise to ensure that the polymerization reaction temperature was at 0-5°C. After 8 hours of polym...

Embodiment 3

[0036] Dissolve 2gPAN and 0.2g phosphoric acid in DMF to prepare spinning liquid, the electrospinning voltage is 16KV, the injection speed is 0.4mol / h, the rotation speed is 1500r / s, the ambient temperature is kept between 25°C and 30°C, and the humidity is kept Between 20% and 30%. The uniaxial spinning time was 9 hours, and the desired polyacrylonitrile-based nanofiber film was obtained. The resulting spun film was pre-oxidized at 270° C. and carbonized at 800° C. to obtain nitrogen / phosphorus co-doped carbon nanofibers. Soak 0.1g of nitrogen / phosphorus co-doped carbon nanofibers in 200ml of phosphoric acid solution dissolved with 30mmol of aniline monomer, stir for 45 minutes until the nitrogen / phosphorus co-doped carbon nanofibers are well dispersed, and dissolve 200ml with 60mmol of ammonium persulfate (Monomer:initiator=1:2) Phosphoric acid solution is slowly added dropwise to ensure that the polymerization reaction temperature is 0-5°C. After 10 hours of polymerization...

Embodiment 4

[0039] Dissolve 2gPAN and 0.6g phosphoric acid in DMF to make spinning liquid, the electrospinning voltage is 18KV, the injection speed is 0.5mol / h, the rotation speed is 1600r / s, the ambient temperature is kept between 25°C and 30°C, and the humidity is kept Between 20% and 30%. The uniaxial spinning time was 10 hours, and the desired polyacrylonitrile-based nanofiber film was obtained. The resulting spun film was pre-oxidized at 270° C. and carbonized at 800° C. to obtain nitrogen / phosphorus co-doped carbon nanofibers. Soak 0.1g of nitrogen / phosphorus co-doped carbon nanofibers in 200ml of phosphoric acid solution dissolved with 5mmol of aniline monomer, stir for 60 minutes until the nitrogen / phosphorus co-doped carbon nanofibers are well dispersed, and dissolve 200ml with 20mmol of ammonium persulfate (Monomer: initiator = 1:4) phosphoric acid solution was slowly added dropwise to ensure that the polymerization temperature was 0-5°C. After 11 hours of polymerization, the f...

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Abstract

The invention relates to a carbon nanofiber composite material with a controllable structure and a preparation method and an application therefor. The technical problems of relatively complex process, high operation difficulty and impossibility of realizing large scale application in the prior art are solved. The composite material has the following structure: a polyaniline layer is uniform in appearance and free of an agglomeration phenomenon; the polyaniline layer adopts a nanometer whiskerlike structure; and the polyaniline nanometer whiskers are arranged in an ordered manner to form a V-shaped channel. The invention also provides the preparation method and the application for the carbon nanofiber composite material. The carbon nanofiber composite material can be applied to a capacitor electrode.

Description

technical field [0001] The invention relates to an electrode material and its preparation method and application, in particular to a structure-controllable carbon nanofiber composite material and its preparation method and application. Background technique [0002] Supercapacitor has the advantages of high power density, good charge and discharge reversibility, long cycle life, and environmental friendliness. It is a new type of environmentally friendly energy storage device and has broad application prospects in mobile communications, electric vehicles, aerospace, and national defense. . [0003] According to the energy storage mechanism, supercapacitors are divided into electric double layer capacitors and Faraday capacitors. Electric double layer capacitors mostly use carbon with a high specific surface area as the electrode material, which has the advantages of good cycle stability and good rate performance, but the disadvantage is low capacity. Faraday capacitors most...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/36H01G11/48H01G11/86
CPCY02E60/13H01G11/24H01G11/30H01G11/36H01G11/48H01G11/86
Inventor 于运花樊晓蓉兰金叻杨小平
Owner BEIJING UNIV OF CHEM TECH
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