A kind of preparation method of helical asymmetric supercapacitor

A supercapacitor, helix-shaped technology, applied in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of complex manufacturing process and difficult control.

Active Publication Date: 2017-12-15
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recently, it has been pointed out in the literature that CNT / PPy composites can be used as supercapacitor electrodes to improve dispersion and enhance capacitance performance by adding surfactants. However, the fabrication process is very complicated and difficult to control.

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  • A kind of preparation method of helical asymmetric supercapacitor
  • A kind of preparation method of helical asymmetric supercapacitor
  • A kind of preparation method of helical asymmetric supercapacitor

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preparation example Construction

[0030] A method for preparing a helical asymmetric supercapacitor of the present invention comprises the following steps: (a) preparation of a positive electrode (1) dissolving the purchased titanium wire in acetone, 5% dilute hydrochloric acid solution, deionized water and Ultrasonic treatment in absolute ethanol for 30-60min to clean; (2) take 100ml of deionized water, add 100-200mg of carbon nanotubes and ultrasonically for 30-60min to obtain a mixed solution; (3) in the obtained carbon nanotubes Add pyrrole monomer and FeCl to the suspension 2 , slowly drop 5ml of H in 20min 2 o 2 In situ polymerization with rapid agitation. (4) Put the titanium wire into the solution as the base of the positive electrode, and the carbon paper as the negative electrode, and carry out electrophoretic deposition at a DC voltage of 5V for a period of time. (b) preparation of negative electrode material (1) adopt improved Hummer method to oxidize natural graphite powder and make graphene ox...

Embodiment 1

[0034] The present embodiment provides a method for preparing a helical asymmetric supercapacitor, which comprises the following steps:

[0035] (a) Clean the purchased titanium wire by ultrasonic treatment for 30-60min in acetone, 5% dilute hydrochloric acid solution, deionized water and absolute ethanol respectively; take 100ml of deionized water and add 200mg of carbon nanotubes Ultrasound for 60min to obtain the mixed solution; add 0.1g pyrrole monomer and 0.01g FeCl to the obtained carbon nanotube suspension 2 , slowly drop 5ml of H in 20min 2 o 2 The in-situ polymerization reaction was carried out under rapid agitation. The titanium wire was put into the solution as the base of the positive electrode, and the carbon paper was used as the negative electrode, and the electrophoretic deposition was carried out at a DC voltage of 5V for 30min. (b) Using the improved Hummer method to oxidize natural graphite powder to obtain graphene oxide; the graphene oxide solution was ...

Embodiment 2

[0037] The present embodiment provides a method for preparing a helical asymmetric supercapacitor, which comprises the following steps:

[0038] (a) Clean the purchased titanium wire by ultrasonic treatment for 30-60min in acetone, 5% dilute hydrochloric acid solution, deionized water and absolute ethanol respectively; take 100ml of deionized water and add 100mg of carbon nanotubes Ultrasound for 60min to obtain the mixed solution; add 0.1g pyrrole monomer and 0.01g FeCl to the obtained carbon nanotube suspension 2 , slowly drop 5ml of H in 20min 2 o 2 The in-situ polymerization reaction was carried out under rapid agitation. The titanium wire was put into the solution as the base of the positive electrode, and the carbon paper was used as the negative electrode, and the electrophoretic deposition was carried out at 5V DC voltage for 60min. (b) Using the improved Hummer method to oxidize natural graphite powder to prepare graphene oxide; the graphene oxide solution was made...

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Abstract

The present invention relates to a preparation method of a helical line type asymmetric super capacitor. The preparation method comprises the following step: preparing a non-linear super capacitor by winding a filament with graphene deposited on a positive electrode with a CNT / PPy composite deposited. According to the preparation method disclosed by the present invention, the non-linear super capacitor is excellent in electrochemical performance in the aspects of specific capacitance, energy and power densities and cycle life. By modifying a carbon nano-tube (CNT) by utilizing highly dispersed polypyrole (PPy), the solubility of the carbon nano-tube (CNT) is improved, and uniform dispersion of the composite material on a fiber matrix is facilitated. In addition, as a linear super capacitor is doped by polypyrole (PPy) nanoparticles, the performance of the linear super capacitor is also improved. According to the preparation method provided by the invention, the linear super capacitor which can be rapid in charge and discharge and low in cost as well as is environmentally friendly and flexible can be manufactured, and the super capacitor can be applied to miniature energy storage equipment.

Description

technical field [0001] The invention belongs to the field of a novel helical linear asymmetric supercapacitor, and relates to the synthesis and preparation of a CNT / PPy composite material and the preparation of a linear supercapacitor, in particular to a method for preparing a helical asymmetric supercapacitor. Background technique [0002] In recent years, microelectronic devices have developed rapidly. In order to meet the demand for energy storage devices, researchers have devoted themselves to developing energy storage devices with high energy density and power density. Among all electrochemical energy storage devices, supercapacitors are the most promising energy storage devices because of their excellent properties, such as high rate capability, cycle stability, and environmental protection. Supercapacitors store energy through charge accumulation at the electrode / electrolyte interface. This energy storage mechanism requires electrode materials with sufficient specific...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/84H01G11/86H01G11/26H01G11/36H01G11/48
CPCY02E60/13
Inventor 晏成林刘学军钱涛杨庭舟
Owner SUZHOU UNIV
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