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High-conductivity polypyrrole gel and preparation method thereof

A technology of high conductivity and polypyrrole, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of low conductivity and low density, and achieve the effects of excellent conductivity, good capacitance performance and convenient preparation process

Active Publication Date: 2019-01-18
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the natural porous structure and properties of the gel, its density is low, so the current polypyrrole gel material generally has the defect of low electrical conductivity, which greatly limits the polypyrrole gel material in many aspects. Especially the application in the field of electroactive electrode materials for supercapacitors (Fan Xin et al., Preparation method of polypyrrole / nickel hydroxide composite electrode materials for supercapacitors, application number CN201711413852.3)

Method used

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  • High-conductivity polypyrrole gel and preparation method thereof
  • High-conductivity polypyrrole gel and preparation method thereof
  • High-conductivity polypyrrole gel and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0019] At room temperature, mix purple-red aluminum reagent aqueous solution (10 mM molar concentration) and pyrrole monomer at a volume ratio of 1:1, and sonicate for 5 minutes to obtain a pink A solution. According to a certain volume ratio, add ferric chloride aqueous solution to solution A at one time, react at room temperature for 30 minutes, soak in a large amount of distilled water for 12 hours, and obtain polypyrrole hydrogel. The hydrogel was freeze-dried at -20°C for 2 hours to obtain polypyrrole gel with high conductivity. The molar concentration of ferric ions in the ferric chloride aqueous solution is 0.1M, and the volume ratio of the ferric chloride aqueous solution and the A solution is 1:1.

[0020] The obtained polypyrrole gel has excellent electrical conductivity, the electrical conductivity is as high as 8.7S / cm, and it has excellent performance as a supercapacitor, and the mass specific capacitance can reach 420F / g (three-electrode test system, current dens...

Embodiment 2

[0022] At room temperature, mix purple-red aluminum reagent aqueous solution (molar concentration: 10 mM) and pyrrole monomer at a volume ratio of 10:1, and sonicate for 5 minutes to obtain a pink A solution. According to a certain volume ratio, the ferric sulfate aqueous solution was added to the A solution at one time, and after reacting at room temperature for 30 minutes, it was soaked in a large amount of distilled water for 12 hours to obtain polypyrrole hydrogel. The hydrogel was freeze-dried at -20°C for 2 hours to obtain polypyrrole gel with high conductivity. The molar concentration of ferric ions in the ferric sulfate aqueous solution is 1M, and the volume ratio of the ferric sulfate aqueous solution and A solution is 10:1.

[0023] The obtained polypyrrole gel has excellent electrical conductivity, with a conductivity as high as 11 S / cm. It has excellent performance as a supercapacitor, and its mass specific capacitance can reach 506 F / g (three-electrode test system...

Embodiment 3

[0025] At room temperature, mix purple-red aluminum reagent aqueous solution (molar concentration: 10 mM) and pyrrole monomer at a volume ratio of 3:1, and sonicate for 5 minutes to obtain a pink A solution. According to a certain volume ratio, the ferric nitrate aqueous solution was added to the A solution at one time, and after reacting at room temperature for 30 minutes, it was soaked in a large amount of distilled water for 12 hours to obtain polypyrrole hydrogel. The hydrogel was freeze-dried at -20°C for 2 hours to obtain polypyrrole gel with high conductivity. The molar concentration of ferric ions in the ferric nitrate aqueous solution is 0.3M, and the volume ratio of the ferric nitrate aqueous solution and A solution is 3:1.

[0026] The obtained polypyrrole gel has excellent electrical conductivity, with a conductivity as high as 9.2 S / cm, and has excellent performance as a supercapacitor, with a mass specific capacitance of up to 440 F / g (three-electrode test system...

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Abstract

The invention provides high-conductivity polypyrrole gel and a preparation method thereof, belonging to the technical field of conductive high molecular materials. The high-conductivity polypyrrole gel is a porous structure material prepared from polypyrrole nanoparticles through linear assembling and linkage. The preparation method particularly comprises the following preparation steps: mixing anamaranthine aluminon water solution with pyrrole monomers in a certain volume ratio, and carrying out ultrasonic treatment, so as to obtain a solution A; adding a water solution containing ferric ions into the solution A, reacting at the room temperature, and soaking by virtue of a large number of distilled water, so as to obtain polypyrrole gel; and carrying out freeze drying on the gel at -20 DEG C for 2 hours, so as to obtain the high-conductivity polypyrrole gel. The prepared polypyrrole gel has excellent conductivity reaching up to 8.7S / cm-11S / cm and is hopeful to be taken as a new material to be applied to the practical application in the fields of supercapacitors, electromagnetic shielding, electro-catalysis and the like. Besides, the preparation method is convenient in preparationprocess, simple in process and suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of conductive polymer materials, and in particular relates to a high-conductivity polypyrrole gel and a preparation method thereof. Background technique [0002] As a member of the conductive polymer family, polypyrrole has the advantages of convenient synthesis, good stability, and high electrochemical activity. Due to the above advantages, polypyrrole has good application prospects in the fields of chemistry, chemical industry, new materials and the like. Typically, it can be used as a supercapacitor electrode material, antistatic material, electromagnetic shielding material, electrocatalytic material, etc. .0). Therefore, since polypyrrole was successfully synthesized, research on polypyrrole has been in the ascendant. [0003] Using a suitable chemical oxidation polymerization method, polypyrrole can be formed into a gel-state porous structure, which enriches its specific surface area and helps to imp...

Claims

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Application Information

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IPC IPC(8): C08L79/04C08J9/28C08G73/06H01G11/24H01G11/48
CPCC08G73/0611C08J9/28C08J2379/04H01G11/24H01G11/48Y02E60/13
Inventor 夏友谊吴玉真王蒋超刘宁胡建
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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