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Graphene oxide hybrid polyaniline-based flexible electrode material as well as preparation method and application thereof

A polyaniline-based, flexible electrode technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of poor mechanical properties, easy rupture, low capacitance, etc., and achieve the effects of improved stability, improved mechanical properties, and enhanced electrical conductivity.

Active Publication Date: 2020-07-10
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, nano-carbon materials are used as conductive fillers to be combined with hydrogels, but when the electrode materials are used in supercapacitors, the capacitance is low and the cost is high, and the composite conductive hydrogels also have poor mechanical properties. prone to breakage

Method used

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  • Graphene oxide hybrid polyaniline-based flexible electrode material as well as preparation method and application thereof
  • Graphene oxide hybrid polyaniline-based flexible electrode material as well as preparation method and application thereof
  • Graphene oxide hybrid polyaniline-based flexible electrode material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Take 2 mL of deionized water and add 16 mg of graphene oxide powder, sonicate for 1 h to prepare a 0.8 wt% graphene oxide (GO) dispersion.

[0027] (2) Add 0.2 g of acrylamide to the GO dispersion in step (1), stir and dissolve until the liquid becomes clear; Ammonium sulfate solution, stirring and dissolving until the liquid is clear; pour the mixture into a 25mL small beaker, seal it, and polymerize at 90°C for 1 hour to obtain GMH.

[0028] (3) Put the GMH prepared in step (2) in 10ml of 2.6wt% aniline hydrochloride solution, store in a sealed environment at 0°C, and soak for 24 hours.

[0029] (4) Add 0.456g of ammonium persulfate and 200μl of 70wt% phytic acid into 2ml of deionized water and mix, cool to 0°C, and then quickly mix with the solution in step (3) to carry out polymerization reaction; after 24h, the product is washed with pure water After washing, the graphene oxide hybrid polyaniline-based flexible electrode material is obtained.

[0030] The ele...

Embodiment 2

[0044] (1) Take 2 mL of deionized water and add 6 mg of graphene oxide powder, sonicate for 1 h to prepare a 0.3 wt% graphene oxide (GO) dispersion.

[0045] (2) Add 0.2 g of acrylamide to the GO dispersion in step (1), stir and dissolve until the liquid becomes clear; Ammonium sulfate solution, stirring and dissolving until the liquid is clear; pour the mixture into a 25mL small beaker, seal it, and polymerize at 90°C for 1 hour to obtain GMH.

[0046] (3) Put the GMH prepared in step (2) in 10ml of 2.6wt% aniline hydrochloride solution, store in a sealed environment at 0°C, and soak for 24 hours.

[0047] (4) Add 0.456g of ammonium persulfate and 200μl of 70wt% phytic acid into 2ml of deionized water and mix, cool to 0°C, and then quickly mix with the solution in step (3) to carry out polymerization reaction; after 24h, the product is washed with pure water After washing, the graphene oxide hybrid polyaniline-based flexible electrode material is obtained.

[0048] The grap...

Embodiment 3

[0050] (1) Take 2 mL of deionized water and add 6 mg of graphene oxide powder, sonicate for 1 h to prepare a 0.3 wt% graphene oxide (GO) dispersion.

[0051] (2) Add 0.2 g of acrylamide to the GO dispersion in step (1), stir and dissolve until the liquid becomes clear; Ammonium sulfate solution, stirring and dissolving until the liquid is clear; pour the mixture into a 25mL small beaker, seal it, and polymerize at 90°C for 1 hour to obtain GMH.

[0052] (3) Put the GMH prepared in step (2) in 10ml of 2.6wt% aniline hydrochloride solution, store in a sealed environment at 0°C, and soak for 24 hours.

[0053] (4) Add 0.456g of ammonium persulfate and 200μl of 70wt% phytic acid into 2ml of deionized water and mix, cool to 0°C, and then quickly mix with the solution in step (3) to carry out polymerization reaction; after 24h, the product is washed with pure water After washing, the graphene oxide hybrid polyaniline-based flexible electrode material is obtained.

[0054] The grap...

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Abstract

The invention discloses a graphene oxide hybrid polyaniline-based flexible electrode material and a preparation method and application thereof, and relates to the field of flexible electronic materials. The preparation method comprises the following main preparation steps: (1) preparing a graphene oxide (GO) dispersion liquid; (2) preparing graphene oxide / polyacrylamide matrix hydrogel (GMH); (3)soaking the hydrogel obtained in the step (2) in an aniline hydrochloride solution; and (4) sequentially adding phytic acid and ammonium persulfate into the solution to carry out in-situ polymerization, and performing washing to remove impurities, thereby obtaining the graphene oxide hybrid polyaniline-based flexible electrode material. According to the preparation method disclosed by the invention, the mechanical property of the material is effectively improved, a polyaniline conductive network is perfected, and the prepared flexible electrode material has high stretchability and excellent electrochemical performance, can be widely applied to energy storage devices such as supercapacitors and the like, and has a wide application prospect in the field of flexible electronics.

Description

technical field [0001] The invention belongs to the field of flexible electronic materials, and in particular relates to a graphene oxide hybrid polyaniline-based flexible electrode material and its preparation method and application. Background technique [0002] With the rapid development of wearable devices, flexible energy storage devices such as supercapacitors have attracted extensive attention. Flexible electrodes are the key to flexible energy storage devices, and flexible electrode materials have become the focus of research in various countries. Polymer hydrogels can maintain a certain shape, are soft and have good processability. The conductive hydrogel formed by compounding the conductive filler and the polymer hydrogel has both flexibility and conductivity, and is suitable as a flexible electrode material. Generally, nano-carbon materials are used as conductive fillers to be combined with hydrogels, but when the electrode materials are used in supercapacitors, ...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/36H01G11/48C08G73/02
CPCH01G11/30H01G11/36H01G11/48C08G73/0266Y02E60/13
Inventor 李晓欧阳万军张卫英陈立樟董岳峰
Owner FUZHOU UNIV
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