Compressible graphene/conductive polymer composite electrode material and preparation method thereof

A conductive polymer and composite electrode technology, applied in the field of composite materials, can solve problems such as poor elasticity and small capacity, and achieve good supercapacitor performance, easy to obtain, and low price effects

Inactive Publication Date: 2018-06-08
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at defects such as poor elasticity and small capacity of the existing graphene / conductive polymer composite material, and provides a graphene / conductive polymer composite material with ultra-high elastic performance and large specific capacitance and a preparation method thereof

Method used

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  • Compressible graphene/conductive polymer composite electrode material and preparation method thereof
  • Compressible graphene/conductive polymer composite electrode material and preparation method thereof
  • Compressible graphene/conductive polymer composite electrode material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Select GO prepared by the Hummers method, first sonicate for 40 minutes, add ascorbic acid according to the mass ratio of GO and ascorbic acid at 1:2 after sonication, and stir for 5 minutes; then reduce at 95°C for 24 minutes to obtain RGO; then freeze for 4 hours, Then reduce at high temperature for 5 hours, dialyze with deionized water and dry. Prepare a mixed solution with a molar ratio of sulfuric acid and aniline monomer of 10:1, use the mixed solution as the electrolyte solution, platinum wire as the counter electrode, silver chloride as the reference electrode, and graphene as the working electrode to construct a three-electrode system, select the voltage range At -0.2V ~ 0.8V, cyclic voltammetry with a scan rate of 40mV / s scans 400 cycles, and then washes with deionized water several times and dries.

Embodiment 2

[0028] Select GO prepared by the Hummers method, first sonicate for 40 minutes, add ascorbic acid according to the mass ratio of GO and ascorbic acid at 1:2 after sonication, and stir for 5 minutes; then reduce at 95°C for 40 minutes to obtain RGO; then freeze for 4 hours, Then reduce at high temperature for 5 hours, dialyze with deionized water and dry. Prepare a mixed solution with a molar ratio of sulfuric acid and aniline monomer of 10:1, use the mixed solution as the electrolyte solution, platinum wire as the counter electrode, silver chloride as the reference electrode, and graphene as the working electrode to construct a three-electrode system, select the voltage range At -0.2V ~ 0.8V, cyclic voltammetry with a scan rate of 40mV / s scans 400 cycles, and then washes with deionized water several times and dries.

Embodiment 3

[0030]Select GO prepared by the Hummers method, first sonicate for 40 minutes, add ascorbic acid according to the mass ratio of GO and ascorbic acid at 1:2 after sonication, and stir for 10 minutes; then reduce at 80°C for 24 minutes to obtain RGO; then freeze for 4 hours, Then reduce at high temperature for 5 hours, dialyze with deionized water and dry. Prepare a mixed solution with a molar ratio of sulfuric acid and aniline monomer of 10:1, use the mixed solution as the electrolyte solution, platinum wire as the counter electrode, silver chloride as the reference electrode, and graphene as the working electrode to construct a three-electrode system, select the voltage range At -0.2V ~ 0.8V, cyclic voltammetry scans at a scan rate of 40mV / s for 500 cycles. After the end, it is washed several times with deionized water and dried.

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Abstract

The invention, which belongs to the technical field of composite materials, in particular relates to a compressible graphene / conductive polymer composite electrode material and a preparation method thereof. The method comprises: a high-elasticity porous meshy aerogel is prepared by selecting graphene as a main body; and then a conductive polymer is loaded by using the porous meshy aerogel as a skeleton according to an electrochemical synthesis method. On the basis of regulation of parameters during the electrochemical synthesis method loading process, growth of the polymer is controlled, so that the specific capacitance of the graphene is improved and the super-elastic property is kept. Therefore, the graphene / conductive polymer composite electrode material has the high elasticity and highspecific capacitance. The compressible graphene / conductive polymer composite electrode material is suitable for energy storage equipment like a super capacitor. According to the microstructure controllability of the graphene, the aperture of the graphene is controlled by regulating the recovery time and freezing time simply. The obtained graphene / conductive polymer composite electrode material not only has the high elasticity but also has the good super capacitance performance.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a compressible graphene / conductive polymer composite electrode material and a preparation method thereof, which can provide new electrode materials with better performance for energy storage devices such as supercapacitors. Background technique [0002] With the increasing popularity of wearable devices, it is very important to design large-capacity energy storage devices that are more suitable for wearable devices. Supercapacitors with superelastic properties. [0003] Due to its large specific capacitance, high specific power, long cycle life and strong charge and discharge capacity, supercapacitors have become a research hotspot in the field of energy. At present, the research focus of supercapacitors is on the development of new electrode materials, looking for more ideal Electrode systems and electrode materials are used to improve the performance of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/30H01G11/36H01G11/48
CPCY02E60/13H01G11/86H01G11/30H01G11/36H01G11/48
Inventor 吕鹏汤勋韦玮
Owner NANJING UNIV OF POSTS & TELECOMM
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