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Method for preparing composite fiber-shaped capacitors continuously

A supercapacitor and composite fiber technology, which is applied in the field of flexible energy storage and wearable devices, can solve the problems of complex preparation methods, large internal resistance of fiber electrodes, and long preparation time

Inactive Publication Date: 2015-12-09
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the preparation method is complicated, the internal resistance of the fiber electrode is large, and the preparation time is long, etc.

Method used

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  • Method for preparing composite fiber-shaped capacitors continuously

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Fix two spinnable carbon nanotube arrays on the rotating electrode, and continuously prepare carbon nanotube fibers from them by dry spinning, and the diameter of the obtained carbon nanotube fibers is 20 μm;

[0020] (2) Continuously pass the carbon nanotube fibers obtained in step (1) through an aqueous solution containing graphene oxide, wherein the concentration of graphene oxide is 3 mg / ml, and lithium perchlorate is 0.1M. A copper rod is used to connect the carbon nanotube fiber to an external circuit as a working electrode, a platinum wire is used as a counter electrode, and silver / silver chloride is used as a reference electrode. Set the voltage of electrochemical deposition to -1.2V, and the time of electrochemical deposition to 300s. Carbon nanotube / graphene composite fibers can be obtained by continuous electrochemical deposition;

[0021] (3) Continuously pass the carbon nanotube / graphene composite fiber obtained in step (2) through the phosphoric acid / ...

Embodiment 2

[0023] (1) Fix two spinnable carbon nanotube arrays on the rotating electrode, and continuously prepare carbon nanotube fibers from them by dry spinning, and the diameter of the obtained carbon nanotube fibers is 25 μm;

[0024] (2) Continuously pass the carbon nanotube fiber obtained in step (1) through an aqueous solution filled with manganese acetate, wherein the concentration of manganese acetate is 0.1M, and the concentration of sodium sulfate is 1.0M. A copper rod is used to connect the carbon nanotube fiber to an external circuit as a working electrode, a platinum wire is used as a counter electrode, and silver / silver chloride is used as a reference electrode. Set the voltage of electrochemical deposition to 0.7V, and the time of electrochemical deposition to 150s. Carbon nanotube / manganese dioxide composite fibers can be obtained by continuous electrochemical deposition;

[0025] (3) Pass the carbon nanotube / manganese dioxide composite fiber obtained in step (2) conti...

Embodiment 3

[0027] (1) Fix two spinnable carbon nanotube arrays on the rotating electrode, and continuously prepare carbon nanotube fibers from them by dry spinning, and the diameter of the obtained carbon nanotube fibers is 30 μm;

[0028] (2) Pass the carbon nanotube fibers obtained in step (1) continuously through an aqueous solution containing aniline, wherein the concentration of aniline is 0.1M, and the concentration of sulfuric acid is 1.0M. A copper rod is used to connect the carbon nanotube fiber to an external circuit as a working electrode, a platinum wire is used as a counter electrode, and silver / silver chloride is used as a reference electrode. Set the voltage of electrochemical deposition to 0.75V, and the time of electrochemical deposition to 100s. Carbon nanotube / polyaniline composite fibers can be obtained by continuous electrochemical deposition;

[0029] (3) Continuously pass the carbon nanotube / polyaniline composite fiber obtained in step (2) through the phosphoric a...

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Abstract

The invention belongs to the technical field of flexible energy storage and wearable devices, and specifically relates to a method for preparing composite fiber-shaped capacitors continuously. According to the invention, a spinnable carbon nanotube array serves as an initial material, and carbon nanotube fiber is obtained by means of dry spinning; the obtained carbon nanotube fiber is subjected to a solution mixed with fake capacitance active substances, such as an oxidized graphene aqueous solution, a manganese acetate aqueous solution, a aniline aqueous solution and a pyrroles aqueous solution, and a specific voltage is applied to the carbon nanotube fiber so as to enable the fake capacitance active substances to be deposited or aggregated on the surface of the carbon nanotube fiber; the continuously prepared carbon nanotube fiber is subjected to a phosphoric acid / polyvinyl alcohol gel electrolyte to obtain composite fiber electrodes; and finally two identical composite fiber electrodes are wound to obtain the fiber-shaped composite super capacitor. According to the invention, the continuous preparation of the fiber-shaped composite super capacitor is realized, the method is simple to operate and is applicable to large-scale production, and the prepared composite fiber-shaped super capacitor is good in flexibility and can be used in the field of flexible energy storage and wearable devices.

Description

technical field [0001] The invention belongs to the technical field of flexible energy storage and wearable devices, and in particular relates to a continuous preparation method of a fibrous composite supercapacitor. Background technique [0002] As an important part of flexible energy storage devices, fibrous supercapacitors have an important impact on the development of wearable devices. In recent years, new carbon-based fiber-shaped supercapacitors have received high attention and great enthusiasm from the international academic and industrial circles, and have shown good application prospects in the field of flexible energy storage devices. [0003] Compared with the planar structure of traditional supercapacitors, fibrous supercapacitors have better flexibility, such as three-dimensional twisting and deformation, so that they can adapt to various product appearance designs, and can also be woven into fabrics and ordinary clothes seamlessly through textile technology. c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/84
CPCY02E60/13
Inventor 彭慧胜王兵杰
Owner FUDAN UNIV
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