Flexible porous polypyrrole film, preparation method and application of flexible porous polypyrrole film as electrode

A pyrrole film and flexible technology, which is applied in the field of preparation of polypyrrole electrodes, can solve the problems of reducing the conductivity of electrode materials, complicated electrode material processes, etc., and achieves the effects of low cost, guaranteed porosity and conductivity, and simple preparation method.

Active Publication Date: 2019-07-12
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wang et al firstly prepared croissant-shaped PPy by electrochemical method, but the porosity of PPy prepared by this method needs to be further improved; Kopecka et al. prepared PPy nanotubes by chemical method, but such nanotubes often The use of non-conductive binders to bond together ultimately reduces the conductivity of the electrode material; some scholars also use chemical and electrochemical methods to add the second or third phase to the PPy preparation process to prepare PPy porous composite materials. The electrode material prepared by the preparation method is relatively complicated, and the electrochemical activity needs to be further improved.

Method used

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  • Flexible porous polypyrrole film, preparation method and application of flexible porous polypyrrole film as electrode
  • Flexible porous polypyrrole film, preparation method and application of flexible porous polypyrrole film as electrode
  • Flexible porous polypyrrole film, preparation method and application of flexible porous polypyrrole film as electrode

Examples

Experimental program
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Effect test

Embodiment 1

[0033] 1) Weigh 4mg of PPy nanotubes, add 40g of deionized water, and add 0.08g of hexadecyltrimethylammonium bromide to stir evenly, and continue ultrasonication for 30min to fully disperse the PPy nanotubes in deionized water; 0.1um, 0.3mm thick titanium foam plate, instead of filter paper, put it into the sand core filter, and slowly filter the mixture of PPy nanotubes and deionized water under negative pressure conditions (0.3 atmospheric pressure), that is, form a foam on the surface of the titanium foam plate. layer of black PPy nanotubes, put the titanium foam plate and PPy nanotube film into an oven, dry at 60°C for 3 hours, and finally form a layer of PPy nanotube film on the titanium foam plate; weigh and find the pyrrole on the titanium foam plate 3mg tube;

[0034] 2) The PPy nanotube film attached to the foamed titanium plate after drying is used as the positive electrode and immersed in the electrolyte for electrochemical polymerization; the polymerization uses t...

Embodiment 2

[0039] 1) Weigh 8 mg of PPy nanotubes, add 80 g of deionized water, and add 0.16 g of sodium dodecylbenzene sulfonate to stir evenly, and continue ultrasonication for 30 minutes to fully disperse the PPy nanotubes in deionized water; A foam tantalum plate with a thickness of 0.3 mm is placed in a sand core filter, and the mixture of PPy nanotubes and deionized water is slowly filtered under negative pressure conditions (0.5 atmospheres), that is, a layer of black PPy nanotubes is formed on the surface of the foam tantalum plate; Put the foamed tantalum plate and the PPy nanotube film together in an oven, dry at 60°C for 4 hours, and finally form a layer of PPy nanotube film on the foamed tantalum plate; weigh and find that the pyrrole tube on the inert metal plate is 4.5 mg.

[0040] 2) The PPy nanotube film attached to the foamed tantalum plate after drying is used as the positive electrode and immersed in the electrolyte for electrochemical polymerization. The PPy prepared by...

Embodiment 3

[0043] 1) Weigh 15 mg of PPy nanotubes prepared by the chemical oxidation method, add 150 g of deionized water, and add 0.3 g of sodium methylene bis-naphthalene sulfonate to stir evenly, and continue ultrasonication for 30 minutes to fully disperse the PPy nanotubes in the deionized In water; put the titanium foam plate with a pore size of 5um and a thickness of 0.7mm into a sand core filter, and slowly filter the mixture of PPy nanotubes and deionized water under negative pressure conditions (0.6 atmospheric pressure), that is, form a foam on the surface of the titanium plate. layer of black PPy nanotubes; put the foamed titanium plate and PPy nanotube film into an oven, dry at 60°C for 6 hours, and finally form a layer of PPy nanotube film on the foamed titanium plate; weigh and find the pyrrole on the inert metal plate 8mg tube;

[0044] 2) The PPy nanotube film attached to the foamed titanium plate after drying is used as the positive electrode and immersed in the electro...

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Abstract

The invention discloses a flexible porous polypyrrole film, a preparation method and application of the flexible porous polypyrrole film as an electrode and belongs to the field of preparation of polypyrrole electrodes. The preparation method of the flexible porous polypyrrole film comprises the following steps that 1) a PPy nanotube water solution is placed on an inert metal foam plate to be filtered, then drying is carried out, and an inert metal foam plate to which a PPy nanotube is attached is obtained; 2) the inert metal foam plate to which the PPy nanotube is attached is adopted as a positive electrode, and immersed in electrolyte containing monomer pyrrole and doping ions for electrochemical polymerization, and an inert metal foam plate to which a PPy layer is attached is obtained,wherein the pH of the electrolyte ranges from 2 to 5; and 3) the inert metal foam plate to which the PPy layer is attached is washed and dried, then the PPy layer is taken down from the inert metal foam plate, and the flexible porous polypyrrole film is obtained. The PPy film prepared through the steps is good in integrity and electrical conductivity and high in porosity and electrochemical activity.

Description

technical field [0001] The preparation field of polypyrrole electrode of the present invention, especially a kind of flexible porous polypyrrole membrane, preparation method and its application as electrode. Background technique [0002] PPy, that is, pyrrole black, is an amorphous powder material, insoluble in water and organic solvents, and has good electrical conductivity. Since the late 1980s, researchers from various countries have extensively and deeply studied the role of PPy in energy storage. , sensors, electric-force actuators, electrochromic, metal anti-corrosion, and drug sustained release applications. [0003] Commonly used synthesis methods include chemical synthesis and electrochemical synthesis; the preparation of PPy by chemical methods generally uses an oxidant to oxidize the monomer into a black powder, and the commonly used oxidant is FeCl 3 and (NH 4 ) 2 S 2 o 8 , some researchers also use hydrogen peroxide and other transition metal salts to oxidi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/02
CPCC25D9/02
Inventor 王景平吴佩琦吴成俊安海霞
Owner SHAANXI UNIV OF SCI & TECH
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