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Preparation method of flexible supercapacitor electrode material applicable to carbon cloth base

A supercapacitor and electrode material technology, applied in the field of electricity, can solve the problems of low specific capacity and weak electrochemical performance of flexible supercapacitors, achieve good chemical stability, improve electrochemical performance, and provide the effect of specific capacity

Active Publication Date: 2018-11-06
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned technical problems in the prior art, the present invention provides a kind of preparation method that is applicable to the electrode material of carbon cloth-based flexible supercapacitor, described this preparation method that is applicable to the electrode material of carbon cloth-based flexible supercapacitor needs to solve The technical problems of the flexible supercapacitor in the prior art are not high in specific capacity and weak in electrochemical performance

Method used

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  • Preparation method of flexible supercapacitor electrode material applicable to carbon cloth base
  • Preparation method of flexible supercapacitor electrode material applicable to carbon cloth base
  • Preparation method of flexible supercapacitor electrode material applicable to carbon cloth base

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Embodiment 1

[0025] A flexible supercapacitor electrode material NiCo 2 o 4 @WS 2 method of preparation.

[0026] Cut the commercial carbon cloth into small pieces of 2cm*2cm, and ultrasonically clean them with 1 M sulfuric acid solution, double distilled water and absolute ethanol for ten minutes respectively. Dry and weigh for later use.

[0027] 0.291 g of cobalt nitrate hexahydrate, 0.1454 g of nickel nitrate hexahydrate and 0.2703 g of urea were dissolved in 25 ml of double distilled water, and stirred at room temperature for 30 minutes. Then transfer the pink transparent solution to the reaction kettle, immerse the cleaned carbon cloth on the wall, and react at 120°C for 6 hours.

[0028] The removed carbon cloth was rinsed with double distilled water and absolute ethanol, dried, and weighed. Put it into a tube furnace and anneal at a rate of 2°C / min to 350°C for 2 hours.

[0029] Dissolve 15mg of ammonium tetrathiotungstate in 30ml of DMF, transfer the solution to a reaction k...

Embodiment 2

[0034] A flexible supercapacitor electrode material NiCo 2 o 4 @WS 2 method of preparation.

[0035] Cut the commercial carbon cloth into small pieces of 2cm*2cm, and ultrasonically clean them with 1 M sulfuric acid solution, double distilled water and absolute ethanol for ten minutes respectively. Dry and weigh for later use.

[0036] Dissolve 0.1455 g of cobalt nitrate hexahydrate, 0.0727 g of nickel nitrate hexahydrate and 0.1352 g of urea in 25 ml of double distilled water, and stir for 30 minutes at room temperature. Then transfer the pink transparent solution to the reaction kettle, immerse the cleaned carbon cloth on the wall, and react at 120°C for 6 hours.

[0037] The removed carbon cloth was rinsed with double distilled water and absolute ethanol, dried, and weighed. Put it into a tube furnace and anneal at a rate of 2°C / min to 350°C for 2 hours.

[0038] Dissolve 15mg of ammonium tetrathiotungstate in 30ml of DMF, transfer the solution to a reaction kettle, p...

Embodiment 3

[0042] A flexible supercapacitor electrode material NiCo 2 o 4 @WS 2 method of preparation.

[0043] Cut the commercial carbon cloth into small pieces of 2cm*2cm, and ultrasonically clean them with 1 M sulfuric acid solution, double distilled water and absolute ethanol for ten minutes respectively. Dry and weigh for later use.

[0044] 0.291 g of cobalt nitrate hexahydrate, 0.1454 g of nickel nitrate hexahydrate and 0.2703 g of urea were dissolved in 25 ml of double distilled water, and stirred at room temperature for 30 minutes. Then transfer the pink transparent solution to the reaction kettle, immerse the cleaned carbon cloth on the wall, and react at 120°C for 6 hours.

[0045] The removed carbon cloth was rinsed with double distilled water and absolute ethanol, dried, and weighed. Put it into a tube furnace and anneal at a rate of 2°C / min to 350°C for 2 hours.

[0046] Dissolve 7.5mg of ammonium tetrathiotungstate in 30ml of DMF, transfer the solution to a reaction ...

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Abstract

The invention provides a preparation method of a flexible supercapacitor electrode material applicable to a carbon cloth base. The preparation method comprises the following steps: after cleaning up commercial carbon cloth, putting the cleaned commercial carbon cloth into a mixed water solution of nickel nitrate, cobalt nitrate and urea in a reaction still to carry out a first hydrothermal reaction, then carrying out calcinations in an air atmosphere after cleaning and drying treatment to obtain carbon cloth on which a nickel cobaltate nanoneedle array is grown, then putting the carbon cloth into a dimethyl formamide solution of ammonium tetrathiotungstate in a reaction still to carry out a second hydrothermal reaction, and putting the carbon cloth in a nitrogen atmosphere for calcinationsafter cleaning and drying treatment so as to successfully obtain the flexible electrode material loaded with nickel cobaltate and tungsten disulfide core-shell nanowires. The manufacturing technologyis simple, the flexible electrode material is loaded on the flexible carbon cloth base so that the flexible electrode material can directly serve as electrodes without the need of an adhesive or a conducting agent, the capacitive performance is greatly improved through the composition of double electrode layers and a pseudocapacitor, the material has relatively high specific capacitance and has preferable development prospects in the field of further energy storage.

Description

[0001] technical field [0002] The invention belongs to the field of electricity and relates to a flexible electrode material, in particular to a preparation method suitable for carbon cloth-based flexible supercapacitor electrode materials. Background technique [0003] Supercapacitors, a new energy storage device between secondary batteries and traditional electrostatic capacitors, are considered to have great potential as next-generation energy storage and conversion devices due to their high power density, short charge-discharge time, and long service life. . In recent years, the research direction of supercapacitors is not only the development of new electrode materials, but also the assembly and performance optimization of supercapacitor devices. With the rapid development of flexible electronics science and the miniaturization technology of electronic products, wearable, foldable, flexible and portable electronic devices are becoming more and more popular, and ...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/30H01G11/32H01G11/86
CPCH01G11/24H01G11/30H01G11/32H01G11/86Y02E60/13
Inventor 范金辰高嘉露闵宇霖朱晟时鹏辉徐群杰
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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