Method for preparing fibrillar meshwork structure conducting polypyrrole film by interfacial polymerization

A network structure, conductive polymerization technology, applied in the production of bulk chemicals, etc., can solve the problems of difficult to obtain high specific capacity and rate characteristics, and achieve the effects of excellent electrochemical performance, wide application prospects, and simple equipment

Inactive Publication Date: 2012-06-27
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is still difficult to obtain high specific capacity and rate characteristics when the spherical, fibrous, tubular, rod-shaped, and ribbon-shaped conductive PPy with micro / nano structure has been synthesized as a supercapacitor material.

Method used

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  • Method for preparing fibrillar meshwork structure conducting polypyrrole film by interfacial polymerization
  • Method for preparing fibrillar meshwork structure conducting polypyrrole film by interfacial polymerization
  • Method for preparing fibrillar meshwork structure conducting polypyrrole film by interfacial polymerization

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A method for preparing a conductive polypyrrole film with a fiber network structure by interfacial polymerization, comprising the following steps:

[0023] (1) Dissolve 70 μL of pyrrole in 20 mL of n-hexane (concentration of solution is 0.05M), sonicate and set aside;

[0024] (2) Take 0.26g of 1-butyl-3-methylimidazole ferric tetrachloride (purchased from Shanghai Chengjie Chemical Co., Ltd.) and add it to 20mL of 1M HCl to obtain 1-butyl-3-methylimidazole with a concentration of 0.038M Imidazolium tetrachloride solution, ultrasound, standby; pyrrole: 1-butyl-3 methylimidazolium tetrachloride=1.3: 1 (molar ratio);

[0025] (3) Slowly inject the pyrrole solution obtained in step (1) along the container wall of step (2) with a dropper (dropping rate: 2-5mL / min), layering, and carrying out interfacial reaction, the upper layer of the interface is transparent and colorless liquid It is the n-hexane solution of pyrrole monomer, and the transparent bright yellow liquid in t...

Embodiment 2

[0027] A method for preparing a conductive polypyrrole film with a fiber network structure by interfacial polymerization, comprising the following steps:

[0028] (1) Dissolve 105 μL of pyrrole in 20 mL of 1-butyl-3-methylimidazolium hexafluorophosphate (purchased from Shanghai Chengjie Chemical Co., Ltd.) (solution concentration: 0.075 M), ultrasonicate, and set aside;

[0029] (2) Take 0.17g 1-butyl-3 methylimidazolium tetrachloride (purchased from Shanghai Chengjie Chemical Co., Ltd.) and add 20mL 1M HClO 4 In, obtain the 1-butyl-3 methylimidazole ferric tetrachloride solution that concentration is 0.025M, ultrasonic, standby; Pyrrole: 1-butyl-3 methylimidazole ferric tetrachloride=3: 1 (molar ratio) ;

[0030] (3) The 1-butyl-3 methylimidazole ferric tetrachloride solution obtained in step (2) is slowly injected (dropping speed: 2-5mL / min) along the container wall of step (1) with a dropper, divided into Layer, carry out interfacial reaction, the transparent bright yello...

Embodiment 3

[0032] The method for preparing a conductive polypyrrole membrane with a fiber network structure by interfacial polymerization is different from Example 2 in that 105 μL pyrrole is changed to 35 μL (solution concentration is 0.025M), 1M HCl is changed to 0.05M sodium p-aminobenzenesulfonate aqueous solution, 0.17 g 1-butyl-3 methylimidazole ferric tetrachloride becomes 0.08g 1-butyl-3 methylimidazolium tetrachloride, pyrrole: 1-butyl-3 methylimidazolium tetrachloride=2: 1 (molar ratio), 1-butyl-3-methylimidazolium hexafluorophosphate becomes 1-octyl-3-methylimidazolium hexafluorophosphate, and the standing reaction time becomes 12h. The thickness of the polypyrrole film was 0.12 mm.

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Abstract

The invention relates to a method for preparing fibrillar meshwork structure conducting polypyrrole film by interfacial polymerization, which comprises the following steps: dissolving ionic liquid in deionized water, and dissolving pyrrole monomer in a hydrophobic solvent, wherein the magnetic ionic liquid acts as an initiator and a soft template, and a conducting polypyrrole film is formed on the interface of water and the hydrophobic solvent. A conducting polypyrrole film with a fibrillar meshwork structure can be obtained by controlling the reaction conditions. According to the invention, the equipment is simple, the operation is easy, and low toxic (non-toxic) n-hexane (ionic liquid) is used as a solvent, resulting in environmental friendliness. The prepared polypyrrole film is used as supercapacitor electrode material and has high specific capacity and multiplying factor.

Description

technical field [0001] The invention relates to a conductive polymer material, in particular, prepares a conductive polypyrrole film with a micron fiber network structure through an interfacial polymerization method, and the polypyrrole film can be applied to supercapacitor electrode materials. Background technique [0002] In recent years, conductive polymer materials with one-dimensional micro / nanostructures have become a research hotspot in the field of polymers. In addition to having the same high specific surface area as other micro / nano materials, this kind of material also has excellent electrical conductivity, which makes it have broader application potential and research value. At present, there are many methods for preparing conductive polymer micro / nanostructures, mainly including template method, self-assembly method, interfacial polymerization method, electrospinning technology and so on. The template method can generally only synthesize short nanofibrils or br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06C08L79/04
CPCY02P20/54
Inventor 韩永芹申明霞肖晋宜
Owner HOHAI UNIV
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