Fibrous super capacitor possessing high output voltage and manufacturing method thereof

A supercapacitor and fibrous technology, which is applied in the field of fibrous supercapacitors and its preparation, can solve the problems that the maximum working voltage is difficult to meet the voltage requirements, the preparation process is complicated, and the cost is high, achieving good flexibility, simple preparation, and low cost. cheap effect

Active Publication Date: 2016-03-23
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the thermodynamic decomposition potential of water (1.23V), its maximum working voltage is difficult to meet the voltage requirements of most electronic equipment; and the method of connecting external wires used in traditional industries has many disadvantages, such as complicated preparation process, High cost, poor security, low integration, etc. These shortcomings are especially obvious when connecting a large number of devices

Method used

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  • Fibrous super capacitor possessing high output voltage and manufacturing method thereof
  • Fibrous super capacitor possessing high output voltage and manufacturing method thereof
  • Fibrous super capacitor possessing high output voltage and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0014] (1) Spinnable multi-walled carbon nanotube arrays were synthesized by chemical vapor deposition, using Fe(1.2nm) / Al catalysts 2 o 3 (3nm), ethylene is the carbon source, and the mixed gas of argon and hydrogen is the carrier gas;

[0015] (2) On the rotary translation platform, the oriented multi-walled carbon nanotube film with a width of 1.0 cm was continuously wound on the stretchable fibrous substrate at a helix angle of 60°, and repeated twice to obtain A stretchable conductive fiber with a carbon nanotube film thickness of 0.32 μm. The prepared fibers were pre-soaked in an aqueous electrolyte composed of 0.75M / L sulfuric acid and 0.10M / L aniline for 20 minutes, and electrochemically polymerized at a potential of 0.75V with Ag / AgCl as a reference electrode to control polyaniline The mass fraction is 50%, rinsed with deionized water to obtain a carbon nanotube / polyaniline composite electrode;

[0016] (3) Remove the conductive material on the stretchable conducti...

Embodiment 2

[0019] (1) Spinnable multi-walled carbon nanotube arrays were synthesized by chemical vapor deposition, using Fe(1.2nm) / Al catalysts 2 o 3 (3nm), ethylene is the carbon source, and the mixed gas of argon and hydrogen is the carrier gas;

[0020] (2) On the rotary translation platform, the oriented multi-walled carbon nanotube film with a width of 1.0 cm was continuously wound on the stretchable fibrous substrate at a helix angle of 60°, and repeated 20 times to obtain Stretchable conductive fibers with a carbon nanotube film thickness of 3.2 μm. The prepared fibers were pre-soaked in an aqueous electrolyte composed of 0.80M / L sulfuric acid and 0.15M / L aniline for 30 minutes, and electrochemically polymerized at a potential of 0.8V with Ag / AgCl as a reference electrode to control polyaniline The mass fraction is 70%, and rinsed with deionized water to obtain a carbon nanotube / polyaniline composite electrode;

[0021] (3) Remove the conductive material on the stretchable cond...

Embodiment 3

[0024] (1) Spinnable multi-walled carbon nanotube arrays were synthesized by chemical vapor deposition, and the catalyst was Fe(1.5nm) / Al 2 o 3 (4nm), ethylene is the carbon source, and the mixed gas of argon and hydrogen is the carrier gas;

[0025] (2) On the rotary translation stage, wrap the oriented multi-walled carbon nanotube film with a width of 1.0 cm on a stretchable fiber substrate with a diameter of 500 μm, and wind the carbon nanotube film continuously at a helix angle of 60° On a stretchable fibrous substrate, repeat 100 times to obtain a stretchable conductive fiber with a carbon nanotube film thickness of 16 μm;

[0026] (3) Remove the conductive material on the stretchable conductive fiber with a single interval electrode length of 7.2cm and an interval of 0.2cm, and obtain 21 stretchable fiber-shaped fibers with a pitch of 0.2cm and an interval electrode length of 7.2cm on one fiber. electrode;

[0027] (4) Apply the gel electrolyte (mass percentage: 10% p...

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Abstract

The invention belongs to the super capacitor technology field and especially relates to a fibrous super capacitor possessing a high output voltage and a manufacturing method thereof. In the invention, on a tensible fiber whose surface is winded with an orientation carbon nanotube film, through a structure design of a common electrode, effective series connection of a super capacitor can be realized on a single fiber. Through regulating and controlling super capacitor unit numbers, different output voltages can be acquired and a highest voltage can reach 1000V. Performance of the super capacitor is stable. The capacitor is stretched for 100000 times under a 50% strain, a capacity maintains to be 95.6% of an initial value. The capacitor is bended for 100000 times under a radius of curvature, a capacity can maintain to be 96.6% of the initial value. The capacitor is charged and discharged in a circulation state under a 2A/g current density for 100000 times, a capacity can still maintain to be 83.6% of the initial value. Cost of the fibrous super capacitor is low and the capacitor can be manufactured continuously. Good flexibility, stretchability and high integration performance are possessed. And the capacitor has a wide application prospect in the wearable and micro-electronic device field.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, and in particular relates to a fibrous supercapacitor with high output voltage and a preparation method thereof. Background technique [0002] The natural world is a source of inspiration for advanced science and technology [1-5] . Although biomimetic materials have been extensively studied to achieve a wide variety of functions, it is rare to design electronic devices with more complex structures and tunable functions by mimicking biological structures. Electric eels are the largest bioelectric producers in the animal kingdom, capable of generating high electrical discharge voltages to stun prey and ward off predators. Scientists have carried out a lot of research work to understand the electric current generation process of the electric cell at the cellular and genetic level [6-10] . Although a single generator cell on an electric eel only produces a voltage of about 0.15V, tens of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/84H01G11/86
CPCY02E60/13H01G11/84H01G11/86
Inventor 彭慧胜孙浩付雪梅解松林
Owner FUDAN UNIV
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