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Preparation method of light-enhanced supercapacitor electrode

A supercapacitor and electrode technology, which is applied in the field of preparation of light-enhanced supercapacitor electrodes, can solve the problems of affecting the performance of supercapacitor electrodes, limited electrochemical performance enhancement, and high cost of noble metal doping, and achieves excellent electrochemical performance and good mechanical properties. Performance, Effect of High Conductivity

Inactive Publication Date: 2021-02-26
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods have disadvantages such as high cost of noble metal doping, complicated nanostructure construction, and limited electrochemical performance enhancement effect, which affect the performance of supercapacitor electrodes.

Method used

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  • Preparation method of light-enhanced supercapacitor electrode
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  • Preparation method of light-enhanced supercapacitor electrode

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Embodiment 1

[0027] Embodiment 1, the present invention provides a kind of technical scheme: a kind of preparation method of the supercapacitor electrode material with light enhancing effect, comprises the following steps:

[0028] S1. Cut the foamed copper into 1cm*3cm, put it into 1mol / L hydrochloric acid and sonicate it for 10 minutes, take it out and wash it with deionized water 3 times until the hydrochloric acid residue is cleaned, then put it in acetone and sonicate it for 10 minutes, and then Sonicate 3 times with absolute ethanol and deionized water respectively, and dry the copper foam in a vacuum oven at 50°C to complete the pretreatment;

[0029] S2, placing the pretreated foamed copper in an alkaline ammonium persulfate solution, specifically a mixed aqueous solution of sodium hydroxide and ammonium persulfate with a molar ratio of 200:1, wherein the concentration of sodium hydroxide is 2.7mol / L, over The concentration of ammonium sulfate is 0.13mol / L, react for 25min, and the...

Embodiment 2

[0039] Embodiment 2: a kind of preparation method of the supercapacitor electrode material with light enhancing effect, comprises the following steps:

[0040] S1. Cut the foamed copper into 1cm*3cm, put it into 0.5mol / L hydrochloric acid and sonicate it for 10 minutes, take it out and wash it with deionized water for 3 times, then put it in acetone and sonicate it for 10 minutes. Finally, use the foamed copper separately Sonicate 3 times with absolute ethanol and deionized water, and dry in a vacuum oven at 50°C;

[0041] S2, placing the pretreated foamed copper in an alkaline ammonium persulfate solution, specifically a mixed aqueous solution of sodium hydroxide and ammonium persulfate with a molar ratio of 200:1, wherein the concentration of sodium hydroxide is 2.7mol / L, over The concentration of ammonium sulfate was 0.13mol / L, reacted for 25min, and then ultrasonicated three times with absolute ethanol and deionized water respectively, and dried in a drying oven at 50°C to...

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Abstract

The invention provides a preparation method of a light-enhanced supercapacitor electrode. The preparation method comprises the following steps of S1, pretreating foamy copper, S2, reacting the pretreated foamy copper in an alkaline ammonium persulfate solution to obtain a copper hydroxide nanowire array growing on the foamy copper in situ, S3, carrying out liquid-phase reaction on the product obtained in the S2 and a zinc-containing dimethylimidazole solution at normal temperature to obtain a zinc-containing zeolite imidazate skeleton structure, namely a ZIF-8 coated copper hydroxide nanowirearray, S4, performing hydrothermal reaction on the product in S3 at 120 DEG C to obtain a nickel-copper double-metal hydroxide nanowire array, and S5, performing graded calcination on the nickel-copper bimetallic nanowire array in an air environment to obtain the light-enhanced supercapacitor electrode material. The light-enhanced supercapacitor electrode material has a large specific surface area, can provide more active sites, can be directly used as a supercapacitor electrode, and has good mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of supercapacitor electrode materials, and in particular relates to a preparation method of light-enhanced supercapacitor electrodes. Background technique [0002] With the rapid development of science and technology, various new electronic technology products appear in people's production and living fields. As small as mobile phones and computers, as large as electric vehicles, there is an urgent need for energy storage devices with high power energy density, long cycle life and fast charging. Among many energy storage devices, a supercapacitor is a new type of energy storage device between a secondary battery and a conventional capacitor. It has the dual functions of a battery and a capacitor, and has high power density, fast charge and discharge speed, and long service life. , green and environmental protection, etc., have gained wide attention. [0003] However, the cost of tradi...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/30H01G11/24
CPCH01G11/24H01G11/30H01G11/86Y02E60/13
Inventor 朱挺何智良刘国强曾伟
Owner CENT SOUTH UNIV
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