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Preparation method of flexible super capacitor based on carbon cloth

A technology of supercapacitors and carbon cloth, which is applied in the direction of capacitors, electrolytic capacitors, solid electrolytic capacitors, etc., can solve the problems of complex preparation process and difficulty in large-scale production, and achieve simple methods, easy large-scale preparation, good electrochemical characteristics and The effect of stability

Inactive Publication Date: 2012-06-20
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to the harsh oxidation-reduction process and the use of a large number of chemical reagents in the process of using these materials to prepare capacitors, the preparation process is complicated and difficult to produce on a large scale.

Method used

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  • Preparation method of flexible super capacitor based on carbon cloth
  • Preparation method of flexible super capacitor based on carbon cloth
  • Preparation method of flexible super capacitor based on carbon cloth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Cut the carbon cloth to a suitable size and place it in the center of the flame of the alcohol lamp. After a period of time, the carbon cloth is removed, and the carbon cloth facing the flame of the alcohol lamp is covered with a layer of black carbon nanoparticles.

[0029] Or a layer of carbon nanotubes is grown on the carbon cloth, specifically: deposit a thin layer of metal iron, cobalt, nickel or their alloys on the carbon cloth by magnetron sputtering, electron beam deposition, etc. After the cloth is soaked in a solution containing salts of iron, cobalt, and nickel and annealed at a high temperature, it is placed in the center of the flame of an alcohol lamp. After a period of time, the carbon cloth was removed, and a layer of carbon nanotubes grew on the carbon cloth.

[0030] 2. Turn the carbon cloth over and repeat step 1.

[0031] 3. Immerse the carbon cloth grown with carbon nanoparticles or carbon nanotubes in a mixed solution of manganese acetate and ...

Embodiment 2

[0035] 1. Cut the carbon cloth into a suitable size, and treat the carbon cloth with hydrophilicity by chemical soaking or plasma treatment.

[0036] 2. Then put the hydrophilic treated carbon cloth into a mixed solution of zinc nitrate and hexamethylene tetraammonia with a certain ratio and concentration, and zinc oxide nanowires can be grown on the carbon cloth at a certain temperature for a certain period of time . In this embodiment, the concentration of zinc nitrate and hexamethylene tetraammonia mixed solution, and the reaction temperature and reaction time can be selected by those skilled in the art according to the time requirement. The ammonia ratio is 1:1, the reaction temperature is 80-140 degrees Celsius, and the reaction time is 2-14 hours.

[0037] 3. Immerse the above-mentioned carbon cloth grown with zinc oxide nanowires in a certain concentration of pyrrole and sulfuric acid solution, and electrodeposit a layer of polypyrrole on the surface of zinc oxide by e...

Embodiment 3

[0041] 1. Cut the carbon cloth into a certain size, wash and dry it for later use.

[0042] 2. Use ceramic sheets as gaskets, place carbon cloth on top of the tungsten boat, pass in a certain proportion of argon and oxygen, and grow tungsten oxide and three Molybdenum oxide nanowires.

[0043] 3. Molybdenum trioxide is reduced to molybdenum dioxide by hydrogen reduction at high temperature.

[0044] 4. Immerse the carbon cloth grown with tungsten oxide or molybdenum dioxide in a mixed solution of a certain concentration of manganese acetate and ammonium acetate, and deposit a certain amount of manganese oxide on the carbon nanoparticles by electroplating.

[0045] 5. Take two pieces of carbon cloth deposited with tungsten oxide and manganese oxide or molybdenum dioxide and manganese oxide and soak them in a mixed solution of polyvinyl alcohol and phosphoric acid or sodium hydroxide at a certain concentration for a certain period of time, then take them out and stick them toge...

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Abstract

The invention discloses a preparation method of a flexible super capacitor based on carbon cloth. The preparation method comprises the following steps of: firstly, growing carbon nanometer particles, carbon nanometer tubes, zinc oxides or tungsten oxide on the carbon cloth, or generating molybdenum dioxide on the carbon cloth; then, preparing manganese oxide or conductive polymers on the substances grown or generated on the carbon cloth for forming electrode materials; and finally, overlapping two electrode materials through solid electrolytes, separating the two electrode materials through a diaphragm and preparing the solid super capacitor. The flexible super capacitor prepared by the method provided by the invention has good electrochemical characteristics and the bending performance and has good application prospects in energy storage aspects.

Description

technical field [0001] The invention relates to a preparation method of a supercapacitor. Background technique [0002] In recent years, with the sharp increase in demand for consumer electronics, flexible, portable and portable electronic devices have become a research hotspot. Flexible electronic devices have good application prospects in wearable display elements, artificial skin, and distributed sensors, so they have attracted more and more attention. [0003] These electronic components all require lightweight, efficient energy storage devices. Traditional energy storage devices such as batteries have the disadvantage of short cycle life, and supercapacitors have advantages over batteries in terms of energy storage due to their better charge-discharge cycle life and higher power density. [0004] In the preparation of supercapacitors, carbon-based materials are one of the most used materials, such as carbon nanotubes, graphene, activated carbon, carbon nano-onions, ca...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01G9/15
CPCY02E60/13
Inventor 周军袁龙炎卢锡洪肖旭代俊杰王中林
Owner HUAZHONG UNIV OF SCI & TECH
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