Preparation of polyaniline/polypyrrole composite nano fiber electrode materials with core-shell structure

A composite nanofiber and core-shell structure technology is applied in the field of preparation of polyaniline/polypyrrole composite nanofiber electrode materials, can solve the problems of cumbersome post-processing process, high production cost, low synthesis yield and the like, and achieves a simple and easy preparation method. Operation, low cost, the effect of avoiding corrosion and contamination

Inactive Publication Date: 2010-11-24
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although these existing methods have achieved success in the preparation of conductive polymer nanofibers, there are more or less disadvantages, such as the need to use organic solvents in the interfacial polymerization method, the synthesis yield is low, and the need for organic solvents Recycling is carried out to avoid environmental pollution; the template method generally has a high production cost, and the template needs to be removed when preparing the electrode; a large amount of emulsifier is often used in the reaction process of the emulsion polymerization method, and the post-treatment proc

Method used

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  • Preparation of polyaniline/polypyrrole composite nano fiber electrode materials with core-shell structure
  • Preparation of polyaniline/polypyrrole composite nano fiber electrode materials with core-shell structure
  • Preparation of polyaniline/polypyrrole composite nano fiber electrode materials with core-shell structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Accurately weigh 0.02mol of aniline and 0.02mol of ammonium persulfate and dissolve them in 100ml of 1M hydrochloric acid solution, mix the two solutions, shake at room temperature at a speed of once per second, and control the reaction time at 5min; the reaction product is centrifuged at a high speed and repeated washing to prepare polyaniline nanofibers.

[0029] Add the prepared polyaniline nanofibers into 100ml of 1M hydrochloric acid solution, sonicate for 30min, then add 0.005mol pyrrole monomer into the above mixture and sonicate for 30min, add ice cubes in the sonication, keep the system temperature stable at 0°C, 0.005 mol ferric trichloride dissolved in 100 ml of 1M hydrochloric acid solution was slowly added dropwise to the mixed solution at a constant speed of 5 ml / min to react for 40 min. The reaction product was subjected to high-speed centrifugation and repeated washing, and dried in vacuum at 60°C for 24 hours. The prepared black powder was the polyanili...

Embodiment 2

[0032] Accurately weigh 0.005mol aniline and 0.005mol ferric chloride and dissolve them in 100ml of 1M hydrochloric acid solution, mix the two solutions, shake at room temperature at a speed of 3 times per second, and control the reaction time at 10min; Centrifuge and wash repeatedly to prepare polyaniline nanofibers.

[0033]Add the prepared polyaniline nanofibers into 100ml of 1M hydrochloric acid solution, sonicate for 30min, then add 0.005mol pyrrole monomer into the above mixture and sonicate for 30min, add ice cubes in the sonication, keep the system temperature stable at 0°C, 0.005 mol ferric trichloride dissolved in 100 ml of 1M hydrochloric acid solution was slowly added dropwise to the mixed solution at a constant speed of 5 ml / min to react for 40 min. The reaction product was subjected to high-speed centrifugation and repeated washing, and dried in vacuum at 60°C for 24 hours. The prepared black powder was the polyaniline / polypyrrole composite nanofiber with core-sh...

Embodiment 3

[0036] Accurately weigh 0.02mol aniline and 0.02mol potassium dichromate and dissolve them in 100ml of 1M hydrochloric acid solution, mix the two solutions, shake at room temperature at a speed of 5 times per second, and control the reaction time at 20min; Centrifuge and wash repeatedly to prepare polyaniline nanofibers.

[0037] Add the prepared polyaniline nanofibers into 100ml of 1M hydrochloric acid solution, sonicate for 30min, then add 0.005mol pyrrole monomer into the above mixture and sonicate for 30min, add ice cubes in the sonication, keep the system temperature stable at 5°C, 0.005 mol ferric trichloride dissolved in 100 ml of 1M hydrochloric acid solution was slowly added dropwise to the mixed solution at a constant speed of 5 ml / min to react for 40 min. The reaction product was subjected to high-speed centrifugation and repeated washing, and dried in vacuum at 60°C for 24 hours. The prepared black powder was the polyaniline / polypyrrole composite nanofiber with cor...

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PUM

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Abstract

The invention relates to preparation of polyaniline/polypyrrole composite nano fiber electrode materials with core-shell structure, comprising the following steps: (1) respectively dissolving aniline and an aniline monomer initiator into a polyaniline doping agent, then merging the mixed liquor, shaking the mixed liquor to ensure the mixed liquor to react under room temperature, centrifuging and washing the reactants to obtain fibers; and (2) adding the fibers to a polypyrrole doping agent, carrying out ultrasonic dispersion and adding a pyrrole monomer under ultrasonic action, then dropwise adding the polypyrrole doping agent solution of a pyrrole monomer initiator, keeping the system temperature at 0-5 DEG C to react, centrifuging and washing the products and drying the products, thus obtaining the electrode materials. The method is simple, low in cost and suitable for industrial production. The obtained materials show higher specific capacitance and good chemical performance stability when being used in super capacitors.

Description

technical field [0001] The invention belongs to the field of preparation of composite nanofiber electrode materials, in particular to a method for preparing polyaniline / polypyrrole composite nanofiber electrode materials with a core-shell structure. Background technique [0002] Supercapacitor is a new type of energy storage device, which has the characteristics of short charging time, long service life, good temperature characteristics, energy saving and environmental protection. Supercapacitors have great application value and market potential in many fields such as electric vehicles, hybrid fuel vehicles, special trucks, electric power, railways, communications, national defense, and consumer electronics. Conducting polymers have attracted great attention due to their fast electrochemical charge-discharge kinetics (that is, rapid doping and dedoping processes), charge storage throughout the material volume, and lower cost than noble metal oxides. Among them, polyaniline ...

Claims

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Application Information

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IPC IPC(8): D01F8/16C08G73/02C08G73/06H01G9/042
CPCY02E60/13
Inventor 秦宗益张瑜郭娜张晓琳张开永任晓燕田菲
Owner DONGHUA UNIV
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