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Double-network composite conductive rubber and preparation method and application thereof

A composite conductive, double network technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of performance degradation, composite material durability, loss, etc., and achieve the effect of increasing conductivity, stable performance and good durability.

Active Publication Date: 2019-02-15
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above technologies and methods have achieved certain results, there are still some problems: first, when polyaniline is deposited on the surface of graphene or conductive substrate, the uniform recombination of the two at the molecular level is not realized, resulting in insufficient combination. There is a problem with the durability of the material; the second is that polyaniline does not have a strong interaction with other materials, and it is easy to migrate out of the composite membrane material during use, resulting in a gradual decline or loss of performance

Method used

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  • Double-network composite conductive rubber and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Disperse 0.3g of aniline-based graphene and 1g of acrylate rubber in 50mL of dimethylformamide, then add 0.05g of diethylenetriamine, stir for 18 hours, pour into a mold, heat to 80°C After 36 hours of joint reaction, the acrylate rubber filled with aniline-based graphene was obtained;

[0024] (2) Soak 0.2 g of aniline-based graphene-filled acrylate rubber in 20 mL of a mixed aqueous solution containing 5 mmol of aniline and 5 mmol of phytic acid for 24 hours at a temperature of 0°C. Take it out after the first immersion, and then immerse it again in 10 mL of a mixed aqueous solution containing 5 mmol of ammonium persulfate for 8 hours at a temperature of 0°C. After the second immersion, the aniline-based graphene filled acrylate rubber / polyaniline double network composite conductive rubber was obtained.

[0025] Take two sheets of aniline-based graphene filled with acrylate rubber / polyaniline double network composite conductive rubber prepared in the same shape, ...

Embodiment 2

[0028] (1) Disperse 0.35g of aniline-based graphene and 1g of acrylate rubber in 70mL of dimethylformamide, then add 0.06g of diethylenetriamine, stir for 24 hours, pour into a mold, heat to 80°C Combined reaction for 40 hours to obtain aniline-based graphene-filled acrylate rubber;

[0029] (2) Soak 0.2 g of aniline-based graphene-filled acrylate rubber in 20 mL of a mixed aqueous solution containing 5 mmol of aniline and 7 mmol of phytic acid for 30 hours at a temperature of 4°C. Take it out after the first immersion, and then immerse it in 10mL of a mixed aqueous solution containing 6mmol ammonium persulfate for 10 hours at a temperature of 0°C. After the second immersion, the aniline-based graphene filled acrylate rubber / polyaniline double network composite conductive rubber was obtained.

Embodiment 3

[0031] (1) Disperse 0.4g of aniline-based graphene and 1g of acrylate rubber in 80mL of dimethylformamide, then add 0.07g of diethylenetriamine, stir for 32 hours, pour into a mold, and heat to 80°C Combined reaction for 42 hours to obtain aniline-based graphene-filled acrylate rubber;

[0032] (2) Soak 0.2 g of aniline-based graphene-filled acrylate rubber in 20 mL of a mixed aqueous solution containing 5 mmol of aniline and 8 mmol of phytic acid for 24 hours at a temperature of 4°C. Take it out after the first immersion, and then immerse it in 10mL of a mixed aqueous solution containing 6mmol ammonium persulfate for 12 hours at a temperature of 2°C. After the second immersion, the aniline-based graphene filled acrylate rubber / polyaniline double network composite conductive rubber was obtained.

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Abstract

The invention relates to double-network composite conductive rubber, a preparation method thereof and an application of the double-network composite conductive rubber in the aspect of a flexible supercapacitor. The method comprises the following steps of firstly, filling modified acrylate rubber with aniline-based graphene, then sequentially soaking the rubber in different solutions containing aniline and phytic acid, and persulfate to be subjected to cross-linking, and finally obtaining the double-network composite conductive rubber material with excellent mechanical property and electrochemical performance. The test shows that the material meets all requirements of ideal flexible supercapacitor materials and has a relatively high application prospect.

Description

technical field [0001] The invention relates to the technical field of conductive rubber and energy storage materials, in particular to a double-network composite conductive rubber and its preparation method and application. Background technique [0002] With the rapid development of wearable electronic devices and mobile portable electronic devices, flexible energy storage devices have attracted more and more attention, especially in recent years, flexible lithium-ion batteries and flexible supercapacitors have been used in artificial skin, biomedicine, aerospace and other fields. The application has aroused widespread concern of scientists. [0003] Supercapacitors, also known as electrochemical capacitors, have the characteristics of high energy density, large specific capacitance, and long cycle life. Flexible electrode materials are the core components of flexible supercapacitors. As we all know, polyaniline is a pseudocapacitive electrode material, which has the adva...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/36H01G11/48
CPCH01G11/30H01G11/36H01G11/48Y02E60/13
Inventor 吕嗣宇李亮喻湘华刘玉兰穆海梅
Owner WUHAN INSTITUTE OF TECHNOLOGY