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Conductive polyaniline gel preparation methods and application of same to supercapacitor

A technology of conductive polyaniline and polyaniline gel, which is applied in the manufacture of hybrid/electric double layer capacitors and electrodes of hybrid capacitors, and can solve problems affecting the transmission of conductive polymer materials, reducing the specific surface area of ​​gels, and affecting electrochemical performance. , to achieve obvious redox performance, no environmental pollution, good electrochemical performance

Active Publication Date: 2016-02-03
中知在线股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although conductive polymer gels have many excellent properties, conductive polymer gels are still prepared by blending conductive polymers with non-conductive polymers. Although the conductive polymers prepared by this method have good mechanical properties, However, the incorporation of non-conductive polymers will affect the electron transport of conductive polymer materials, reduce the specific surface area of ​​the gel, and thus affect its electrochemical performance.

Method used

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  • Conductive polyaniline gel preparation methods and application of same to supercapacitor
  • Conductive polyaniline gel preparation methods and application of same to supercapacitor
  • Conductive polyaniline gel preparation methods and application of same to supercapacitor

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Dissolve 2mmol of aniline and 1mmol ATMP in 1mL of distilled water, stir ultrasonically for 30min to fully dissolve and mix, then place it in an ice-water bath at 0°C; dissolve 0.1g of ammonium persulfate in 0.5mL of distilled water, then place at 0°C In an ice-water bath; finally, quickly add the solution containing ammonium persulfate to the solution containing aniline and ATMP, ultrasonically for 10 seconds, and then let it stand for 10 minutes to form a polyaniline gel, which is then washed 2-3 times with distilled water; The polyaniline gel was freeze-dried to obtain the product. The prepared conductive polyaniline gel was analyzed by scanning electron microscope (SEM), such as figure 1 As shown, it can be seen that the gel is a three-dimensional network porous structure composed of nanosheets, and the nanosheets are connected to each other. The electrical conductivity of the lyophilized polyaniline gel measured by a four-probe resistivity tester was 0.31 S / cm, wh...

Embodiment 2

[0033] Dissolve 4 mmol of aniline and 3 mmol of ATMP in 2 mL of distilled water, stir ultrasonically for 30 min to fully dissolve and mix, and then place it in an ice-water bath at 2 °C; dissolve 0.25 g of ammonium persulfate in 1 mL of distilled water, and then place it on ice In a water bath; finally, quickly add the solution with ammonium persulfate into the solution with aniline and ATMP, and put it aside for 30 minutes after ultrasonication for 15s to form a polyaniline gel, which is then washed with distilled water for 2-3 times; the above-prepared The polyaniline gel was freeze-dried to obtain the product. The conductive polyaniline gel that makes is analyzed by SEM and specific surface area (BET), as figure 2 As shown, the polyaniline gel is a three-dimensional network porous structure composed of interconnected nanosheets, the thickness of the nanosheets is about 60 nm, and a large number of micropores are evenly distributed on the nanosheets. The specific surface a...

Embodiment 3

[0035] Dissolve 6mmol of aniline and 5mmol ATMP in 4mL of distilled water, stir ultrasonically for 30min to fully dissolve and mix, then place it in an ice-water bath at 4°C; dissolve 0.5g of ammonium persulfate in 3mL of distilled water, then place on ice In a water bath; finally, quickly add the solution with ammonium persulfate into the solution with aniline and ATMP, and put it aside for 60 minutes after ultrasonication for 30 s to form a polyaniline gel, which is then washed 2-3 times with distilled water; the above-prepared The polyaniline gel was freeze-dried to obtain the product. The prepared conductive polyaniline gel was analyzed by SEM, as image 3 As shown, the gel is still a three-dimensional structure composed of nanosheets. The conductivity of the lyophilized polyaniline gel was measured by a four-probe resistivity tester to be 0.35 S / cm.

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Abstract

The invention relates to conductive polymer gel and discloses conductive polyaniline gel preparation methods and application of the same to a supercapacitor. A first preparation method includes the steps that an ammonium persulfate solution is added into an aniline and ATMP solution, a reaction is conducted in an ice-water bath so that aniline polymerization can be conducted completely, then washing, freezing and drying are conducted, and the conductive polyaniline gel is obtained; a second preparation method includes the steps that the aniline and ATMP solution is added to a spray head A of a 3D printer, the ammonium persulfate solution is added to a spray head B of the 3D printer, the spray head A and the spray head B conduct printing alternatively at the temperature of 0-4 DEG C, a reaction is conducted at the same point, and the conductive polyaniline gel is formed; the gel prepared through the two mentioned methods can be evenly arrange on processed carbon paper in a spin coating mode, and vacuum drying is conducted, and conductive polyaniline gel electrodes are obtained. By means of the conductive polyaniline gel preparation methods and application, introduction of non-conductive polymer is avoided, the conductivity is improved, the conductive polyaniline gel with more excellent performance is obtained, the conductive polyaniline gel is used as an electrode material, the polyaniline gel is directly arranged on a current collector in a coated mode, and the amount of inactive substances in the electrodes is reduced.

Description

technical field [0001] The invention relates to a preparation method of a conductive polymer gel, in particular to a preparation method of a conductive polyaniline gel synthesized by cross-linking polyaniline with small molecules of polyphosphoric acid and an energy storage application. Background technique [0002] In recent years, conductive polymers have attracted great attention because they are widely used in new energy devices such as supercapacitors and lithium-ion batteries. They are not only low in price, good in environmental stability, but also have certain electronic conductivity. However, with the development of various flexible and high-power energy devices, the low conductivity and poor processability of traditional conductive polymer materials often limit their application in high-performance devices. Therefore, it is of great significance to study new conductive polymer materials with excellent electrical conductivity and processability. [0003] Conductive...

Claims

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Application Information

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IPC IPC(8): C08G73/02C08J3/075H01G11/48H01G11/86
Inventor 许鑫华窦鹏郑娇曹真真
Owner 中知在线股份有限公司
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