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Carbon nano onion film-based super capacitor used in alternating current line filtering field

A carbon nano-onion and supercapacitor technology, which is applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve the problems of large volume, low RC time constant and relaxation time constant, and low volume of aluminum electrolytic capacitors.

Active Publication Date: 2021-09-14
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problem that the volumetric specific capacitance of the aluminum electrolytic capacitor is too low and the volume is too large to be solved urgently, and the problems of low volume specific capacity, low volumetric energy density, poor rate performance and complicated preparation process and high cost existing in the current carbon material supercapacitor , the object of the present invention is to provide a carbon nano-onion film-based supercapacitor used in the field of AC line filtering, which has a phase angle close to 90° at 120 Hz, extremely low RC time constant and relaxation time constant, high Excellent rate performance, high volume specific capacity and volume energy density, and can filter AC signals of different frequencies into stable DC signals, which can be applied to a new generation of small-volume filter capacitors

Method used

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  • Carbon nano onion film-based super capacitor used in alternating current line filtering field
  • Carbon nano onion film-based super capacitor used in alternating current line filtering field
  • Carbon nano onion film-based super capacitor used in alternating current line filtering field

Examples

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Embodiment 1

[0057] A preparation method of carbon nano onion film, comprising the following steps:

[0058] 1) Mix 0.541g of ferric chloride hexahydrate, nickel chloride hexahydrate and sodium oleate (providing oxidation function) as a solid, mix the solid with the first solution, heat at 60°C for 6 hours, add 40mL of deionized water Centrifuge to separate the liquid layers, and then keep warm at 100°C for 1 hour to remove water to obtain the second solution, wherein the first solution is a mixture of absolute ethanol, deionized water and n-hexane, calculated in parts by volume , the ratio of absolute ethanol, deionized water and normal hexane in the first solution is 1:1:2, and by mass parts, the ratio of ferric chloride hexahydrate, nickel chloride hexahydrate and sodium oleate is 1: 1:4, according to the amount of substance, the ratio of solid to first solution is 1:1.5;

[0059] 2) Mix the second solution with 1-octadecene and oleic acid, and incubate at 120°C for 30 minutes in a nit...

Embodiment 2

[0066] A preparation method of carbon nano onion film, comprising the following steps:

[0067] 1) Mix 1.082g ferric chloride hexahydrate, nickel chloride hexahydrate and sodium oleate (providing oxidation function) and make it solid, mix the solid with the first solution, heat at 50°C for 4 hours, add 50mL deionized water Centrifuge to separate the liquid layers, and then incubate at 100°C for 1.5 hours to remove water to obtain a second solution, wherein the first solution is a mixture of absolute ethanol, deionized water and n-hexane, calculated in parts by volume , the ratio of dehydrated ethanol, deionized water and normal hexane in the first solution is 1:1:2, by mass parts, the ratio of iron chloride hexahydrate, nickel chloride hexahydrate and sodium oleate is 2: 1:4, according to the amount of substance, the ratio of solid to first solution is 1:2;

[0068] 2) Mix the second solution with 1-octadecene and oleic acid, and incubate at 110°C for 40 minutes in a nitrogen...

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Abstract

The invention discloses a carbon nano onion film-based supercapacitor used in the field of alternating current line filtering. An electrode material of a carbon nano onion film with an interconnection structure is synthesized on the surface of a nickel sheet by adopting a chemical vapor deposition method; and a water-based electrolyte or an organic electrolyte is respectively utilized to assemble the carbon nano onion film-based supercapacitor for alternating-current line filtering. According to the carbon nano onion film-based supercapacitor, the advantage of high curvature of the carbon nano onion can be utilized, and the excellent frequency response performance and the high rate performance of the carbon nano onion can be fully exerted. And the super capacitor has high volume specific capacity, volume energy density and good working stability.

Description

technical field [0001] The invention belongs to the technical field of preparation of filter capacitors, supercapacitors and carbon nanomaterials, and in particular relates to a carbon nano-onion film-based supercapacitor used in the field of AC line filtering. Background technique [0002] The power system relies on the transmission of alternating current generated by power plants, and through rectification and AC line filtering equipment, the alternating current is converted into direct current that can be used by household electrical equipment to maintain the operation of the equipment. AC line filter is the core device in the process of converting alternating current to direct current. The device is responsible for converting the rectified pulse current whose frequency is twice the input frequency (the input frequency in China and Europe is 50Hz, and the input frequency in the United States is 60Hz) into a stable DC signal. At present, the equipment mainly used for AC l...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/36
CPCH01G11/86H01G11/36Y02E60/13
Inventor 张晨光杜浩哲
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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