Carbon nano-onion film-based supercapacitors for AC line filtering

A carbon nano-onion and supercapacitor technology, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, can solve the problems of low volume, complex preparation process, and low volume specific capacity of aluminum electrolytic capacitors, and achieve good AC filtering. The effect of performance, simple preparation process and high volume specific capacity

Active Publication Date: 2022-03-15
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 supercapacitors for AC line filtering
  • Carbon nano-onion film-based supercapacitors for AC line filtering
  • Carbon nano-onion film-based supercapacitors for AC line filtering

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 make the liquid layered, and then keep at 100°C for 1 hour to remove moisture to obtain a second solution, wherein the first solution is a mixture of absolute ethanol, deionized water and n-hexane, in parts by volume , the ratio of absolute ethanol, deionized water and n-hexane in the first solution is 1:1:2, and in parts by mass, the ratio of ferric chloride hexahydrate, nickel chloride hexahydrate and sodium oleate is 1: 1:4, the ratio of solid to first solution is 1:1.5 according to the amount of substance;

[0059] 2) Mix the second solution with 1-octadecene and oleic acid, in a nitrogen environment, keep the temperature at 120°C for 30 mi...

Embodiment 2

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

[0067] 1) Mix 1.082g 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 50°C for 4 hours, add 50mL of deionized water Centrifuge to make the liquid layered, and then keep at 100°C for 1.5 hours to remove moisture to obtain a second solution, wherein the first solution is a mixture of absolute ethanol, deionized water and n-hexane, in parts by volume , the ratio of absolute ethanol, deionized water and n-hexane in the first solution is 1:1:2, and in parts by mass, the ratio of ferric chloride hexahydrate, nickel chloride hexahydrate and sodium oleate is 2: 1:4, the ratio of solid to first solution is 1:2 according to the amount of substance;

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

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Abstract

The invention discloses a carbon nano-onion film-based supercapacitor used in the field of AC line filtering. The electrode material of a carbon nano-onion film with an interconnected structure is synthesized on the surface of a nickel sheet by using a chemical vapor deposition method, and the electrode material of the carbon nano-onion film is synthesized by using an aqueous or organic A carbon nano-onion film-based supercapacitor assembled with two electrolytes for AC line filtering. The carbon nano-onion film-based supercapacitor can take advantage of the high curvature of the carbon nano-onion and give full play to its excellent frequency response performance and high rate performance. Moreover, it has high volume specific capacity, volume energy density and good working stability.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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