Agarose/polyaniline compound gel, method for preparing same and application of agarose/polyaniline compound gel

A technology of agarose gel and composite gel, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, hybrid capacitor electrolytes, etc., can solve the problems of poor mechanical strength and ionic conductivity, and achieve good flexibility and circulation Effects of stability, mild experimental conditions, good mechanical properties and flexible bending properties

Inactive Publication Date: 2016-09-07
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the gel-state electrolytes that have been studied more are mainly polyoxyethylene, potassium polyacrylate, polyvinyl alcohol, etc., but the mechanical strength and ionic conductivity of most gel-state electrolytes are poor.

Method used

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  • Agarose/polyaniline compound gel, method for preparing same and application of agarose/polyaniline compound gel
  • Agarose/polyaniline compound gel, method for preparing same and application of agarose/polyaniline compound gel

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) At 80°C, dissolve 1 g of agarose powder in 5 mL of 1 mol / L Na 2 SO 4 solution, stirred for 0.5 h, poured into a mold while hot, and obtained agarose gel after cooling.

[0032] (2) Put 2 g of agarose gel in 15 mL of aniline solution with a concentration of 10 mg / mL for 2 hours, let the aniline adsorb on the surface of the agarose gel, and then immerse it in 30 mL of ammonium persulfate solution with a concentration of 0.5 mol / L for 2 hours. Agarose / polyaniline composite gel was obtained by oxidative polymerization. This composite gel has a sandwich polyaniline / agarose electrolyte / polyaniline integrated structure, and its cross-sectional photos are shown in figure 2 shown.

[0033] The graphene film is placed on the surface of the agarose / polyaniline composite gel to form a flexible supercapacitor based on the agarose / polyaniline composite gel.

[0034] In the case of bending the flexible supercapacitor, its performance was tested using an electrochemical workst...

Embodiment 2

[0036] (1) At 90°C, dissolve 0.5 g of agarose powder in 10 mL of 1 mol / L Na 2 SO 4 solution, stirred for 3 hours, poured into a mold while hot, and obtained agarose gel after cooling.

[0037] (2) Put 5 g of agarose gel in 5 mL of aniline solution with a concentration of 20 mg / mL for 2 h, let the aniline adsorb on the surface of the agarose gel, then immerse in 10 mL of ammonium persulfate solution with a concentration of 0.5 mol / L for 5 h, pass The agarose / polyaniline composite gel is obtained through oxidative polymerization, and the composite gel has a sandwich polyaniline / agarose electrolyte / polyaniline integrated structure.

[0038] The conductive carbon fibers are arranged on the surface of the agarose / polyaniline composite gel to form a flexible supercapacitor based on the agarose / polyaniline composite gel.

[0039] In the case of bending the flexible supercapacitor, its performance was tested using an electrochemical workstation (Shanghai Chenhua 660D). After consta...

Embodiment 3

[0041] (1) At 60°C, dissolve 0.3 g of agarose powder in 10 mL of 1 mol / L H 2 SO 4 solution, stirred for 10 hours, poured into a mold while hot, and obtained agarose gel after cooling.

[0042] (2) Put 5 g of agarose gel in 5 mL of aniline solution with a concentration of 20 mg / mL for 2 h, let the aniline adsorb on the surface of the agarose gel, then immerse it in 10 mL of ferric chloride solution with a concentration of 0.5 mol / L for 5 h, pass The agarose / polyaniline composite gel is obtained through oxidative polymerization, and the composite gel has a sandwich polyaniline / agarose electrolyte / polyaniline integrated structure.

[0043] The conductive carbon fibers are arranged on the surface of the agarose / polyaniline composite gel to form a flexible supercapacitor based on the agarose / polyaniline composite gel.

[0044] In the case of bending the flexible supercapacitor, its performance was tested using an electrochemical workstation (Shanghai Chenhua 660D). In the case o...

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Abstract

The invention discloses agarose/polyaniline compound gel, a method for preparing the same and application of the agarose/polyaniline compound gel. The agarose/polyaniline compound gel is of a sandwich polyaniline/agarose electrolyte/polyaniline integrated structure. The method includes steps of (1), adding agarose into electrolyte solution with certain concentration, uniformly mixing the agarose and the electrolyte solution with each other and then pouring the agarose and the electrolyte solution into molds to obtain agarose gel; (2), arranging the agarose gel in aniline solution, attaching aniline to the surfaces of the agarose gel and then immersing the agarose gel in oxidizing agent solution to obtain the agarose/polyaniline compound gel by means of oxidative polymerization. Current collectors can be arranged on the surfaces of the agarose/polyaniline compound gel, so that flexible supercapacitors on the basis of the agarose/polyaniline compound gel can be assembled. The agarose/polyaniline compound gel, the method and the application have the advantages that procedures for preparing the agarose/polyaniline compound gel are simple, electrodes and electrolyte layers are integrated on the agarose/polyaniline compound gel, the agarose/polyaniline compound gel is good in mechanical property and flexible bending property, and the supercapacitors made of the agarose/polyaniline compound gel are excellent in flexibility, capacitive character and cycling stability.

Description

technical field [0001] The invention relates to an agarose / polyaniline composite gel and its preparation method and application, belonging to the fields of novel composite materials and electronic devices. Background technique [0002] As we all know, supercapacitors have fast charging and discharging speed and long life, and are widely used in electronic products, backup power supplies, electric vehicles and other fields. In recent years, with the rapid development of wearable electronic devices, flexible supercapacitors with bending and foldable properties have attracted more and more attention. At present, more flexible supercapacitors are studied by adding an electrolyte film between two electrode films to form a sandwich-like multilayer structure of electrode film-electrolyte film-electrode film, thereby obtaining a symmetrical or asymmetrical capacitor. However, there is no interaction between this multilayer structure, and it is easy to cause the contact between the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/48H01G11/56H01G11/84
CPCY02E60/13H01G11/48H01G11/56H01G11/84
Inventor 李亮刘玉兰佘潇喻湘华黄华波
Owner WUHAN INSTITUTE OF TECHNOLOGY
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