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Light-enhancement type flexible supercapacitor and preparation method thereof

A supercapacitor and enhanced technology, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, hybrid capacitor collectors, etc., can solve the problem of few light-enhanced flexible supercapacitors, so as to facilitate transmission and avoid collapse , The effect of simple preparation process

Active Publication Date: 2019-08-23
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, both carbon nanotubes and graphene have excellent photoconductive properties, that is, the conductivity of graphene, carbon nanotubes, or their composite materials will be significantly enhanced under light conditions, but currently, light-enhanced flexible superstructures based on the above materials There are few research reports on capacitors

Method used

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  • Light-enhancement type flexible supercapacitor and preparation method thereof
  • Light-enhancement type flexible supercapacitor and preparation method thereof
  • Light-enhancement type flexible supercapacitor and preparation method thereof

Examples

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Embodiment 1

[0041] A light-enhanced flexible supercapacitor, the supercapacitor includes two electrode sheets and an electrolyte between the two electrode sheets, the electrode sheet is a flexible electrode sheet, and the flexible electrode sheet includes a polydimethylsiloxane base and is covered on Graphene / carbon nanotube / polyaniline composite material on one side of polydimethylsiloxane substrate, the electrolyte is polyvinyl alcohol / phosphoric acid hydrogel, coated on a flexible electrode sheet. The graphene / carbon nanotube / polyaniline composite material is covalently connected, and the mass percentage of polyaniline in the composite film is 0-30%. The mass ratio of polyvinyl alcohol and phosphoric acid in the polyvinyl alcohol / phosphoric acid hydrogel is 1:1, and the thickness of the coated gel is 5-10 μm.

[0042] A light-enhanced flexible supercapacitor and the specific steps for its preparation are:

[0043] (1) Using methane as the carbon source and a mixed gas of argon and hyd...

Embodiment 2

[0062] A light-enhanced flexible supercapacitor and the specific steps for its preparation are:

[0063] (1) Using methane as the carbon source and a mixed gas of argon and hydrogen as the carrier gas; wherein the volume ratio of argon to hydrogen in the carrier gas is 10:2, and the volume ratio of argon to methane is 40:5, The reaction temperature is 980°C, and graphene is grown by vapor deposition on the nickel foam substrate;

[0064] (2) the nickel foam is etched away with a mixed solution of ferric chloride and hydrochloric acid with a concentration ratio of 1:1 to obtain a graphene foam with a thickness of 1.0 mm;

[0065] (3) Add 0.003g of polyvinyl alcohol into 10mL of deionized water, swell at room temperature for 12 hours, heat and stir for 2 hours, add 1.212g of ferric nitrate and 1.125g of aluminum nitrate after cooling the solution, and stir until completely dissolved. The graphene foam is completely soaked in the catalyst solution, taken out and put into an oven...

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Abstract

The invention relates to a light-enhancement type flexible supercapacitor and a preparation method thereof. The supercapacitor comprises two electrode plates and an electrolyte positioned between thetwo electrode plates, wherein the electrode plates are flexible electrode plates, and each flexible electrode plate comprises a polydimethylsiloxane substrate and a graphene / carbon nano tube / polyaniline composite material covering one side of the polydimethylsiloxane substrate, and the electrolyte is polyvinyl alcohol / phosphoric acid hydrogel and is coated on the flexible electrode plates. Compared with the prior art, the supercapacitor constructed by the invention employs the excellent photoconductivity of the covalently connected graphene / carbon nano tube, so the prepared supercapacitor hasthe excellent mechanical performance and good electrochemical energy storage performance, and is expected to be applied to the fields of wearable electronic devices, photosensitive flexible integrateddevices and the like.

Description

technical field [0001] The invention relates to the technical field of flexible energy storage devices, in particular to a light-enhanced flexible supercapacitor and a preparation method thereof. Background technique [0002] With the development of society and the progress of science and technology, people have a higher demand for electronic devices. Supercapacitors are common energy storage electronic devices; graphene is the most commonly used material for flexible electronic devices—and graphene-based supercapacitors generally have problems such as low capacity, poor flexibility and stretchability, so there is an urgent need to develop a A graphene-based supercapacitor with high specific capacity and good flexibility is used in flexible electronic devices. According to the survey, in 2015, the domestic supercapacitor market was 7.3 billion yuan, with an average annual compound growth rate of 47.82% in 2012-2015. There are many domestic manufacturers engaged in research ...

Claims

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Application Information

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IPC IPC(8): H01G11/26H01G11/30H01G11/32H01G11/36H01G11/48H01G11/56H01G11/68H01G11/84H01G11/86
CPCH01G11/26H01G11/30H01G11/32H01G11/36H01G11/48H01G11/56H01G11/68H01G11/84H01G11/86Y02E60/13
Inventor 陈涛陈子林吕甜
Owner TONGJI UNIV
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