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Electrode material, preparation method and application of a kind of supercapacitor

A technology of supercapacitors and electrode materials, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, etc., can solve the problems of poor cycle stability of supercapacitors, and achieve the effect of maintaining stability and high stability.

Active Publication Date: 2021-09-07
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned technical deficiencies, the object of the present invention is to provide an electrode material, preparation method and application of a supercapacitor. The present invention overcomes the technical problem of poor cycle stability of the prior art supercapacitor, and prepares a supercapacitor with structural stability. Electrode material with high and good cycle stability, and apply this electrode material in supercapacitor

Method used

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  • Electrode material, preparation method and application of a kind of supercapacitor
  • Electrode material, preparation method and application of a kind of supercapacitor
  • Electrode material, preparation method and application of a kind of supercapacitor

Examples

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Embodiment 1

[0026] A preparation method of an electrode material for a supercapacitor, comprising the steps of:

[0027] (1) Soak the nickel foam in acetone and sonicate, then immerse the nickel foam into a HCl solution with a concentration of 0.1mol / L for sonication, place it in deionized water for sonication, dry it at room temperature until the quality does not change, and get cleaning treatment nickel foam;

[0028] (2) After soaking the cleaning treatment foamed nickel of step (1) in 37% dilute hydrochloric acid solution for 3h, obtain the surface-treated foamed nickel;

[0029] (3) Soak the surface-treated foamed nickel in step (2) in an aqueous solution of dimethylamine, wherein the volume fraction of water is 20%, crystallize at 180°C for 24h, and the resulting crystallized product is washed, suction filtered, and dried Obtain nickel hydroxide-nickel foam-nickel hydroxide film;

[0030] (4) Add carbon fibers to a concentrated nitric acid solution with a mass fraction of 68%, oxi...

Embodiment 2

[0033] A preparation method of an electrode material for a supercapacitor, comprising the steps of:

[0034] (1) Soak the nickel foam in acetone and sonicate, then immerse the nickel foam into a HCl solution with a concentration of 0.1mol / L for sonication, place it in deionized water for sonication, dry it at room temperature until the quality does not change, and get cleaning treatment nickel foam;

[0035] (2) After soaking the cleaning treatment foam nickel of step (1) in 37% dilute sulfuric acid solution for 3.5h, obtain surface-treated foam nickel;

[0036] (3) Soak the surface-treated nickel foam of step (2) in an aqueous solution of triethanolamine, wherein the volume fraction of water is 25%, and crystallize at 200°C for 18h, and the resulting crystallized product is obtained after washing, suction filtration, and drying. Nickel hydroxide-nickel foam-nickel hydroxide film;

[0037] (4) Add carbon fibers to a concentrated nitric acid solution with a mass fraction of 6...

Embodiment 3

[0040] A preparation method of an electrode material for a supercapacitor, comprising the steps of:

[0041] (1) Soak the nickel foam in acetone and sonicate, then immerse the nickel foam into a HCl solution with a concentration of 0.1mol / L for sonication, place it in deionized water for sonication, dry it at room temperature until the quality does not change, and get cleaning treatment nickel foam;

[0042] (2) after soaking the foamed nickel in the cleaning treatment of step (1) in 37% dilute hydrochloric acid solution for 4h, obtain the surface-treated foamed nickel;

[0043] (3) Soak the surface-treated nickel foam of step (2) in an aqueous urea solution, wherein the volume fraction of water is 30%, crystallize at 240° C. for 16 hours, and obtain hydrogen after washing, suction filtration, and drying of the resulting crystallized product Nickel oxide-nickel foam-nickel hydroxide film;

[0044] (4) Add the carbon fiber to a concentrated nitric acid solution with a mass fr...

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Abstract

The present invention relates to the field of preparation of electrode materials for supercapacitors, specifically an electrode material for supercapacitors, a preparation method and an application thereof, which are prepared by the following method: growing nickel hydroxide on a nickel foam film through a crystallization reaction, and then passing through Hydrothermal reaction loads carbon fibers on the nickel hydroxide film to form an electrode material with carbon fiber-nickel hydroxide-foam nickel hydroxide-carbon fiber structure, and the loading amount of nickel hydroxide is 0.3-0.7mg / cm 2 , the loading of carbon fiber is 0.6‑0.9mg / cm 2 . The invention overcomes the technical problem of poor cycle stability of the supercapacitor in the prior art, prepares an electrode material with high structural stability and good cycle stability, and applies the electrode material to the supercapacitor.

Description

technical field [0001] The invention relates to the field of preparation of supercapacitor electrode materials, in particular to a supercapacitor electrode material, preparation method and application. Background technique [0002] With global warming, lack of resources, and deteriorating ecological environment, the dependence on fossil fuels will not only make it exhausted, but also bring more and more harm to the environment. For this reason, new technologies such as wind energy, nuclear energy, solar energy, and ocean energy The development and utilization of energy has gradually been highly valued. In order to fully develop and utilize these energies, energy storage devices that are used in conjunction with them are needed. In recent decades, a new type of energy storage element-supercapacitor, supercapacitor has been developed at home and abroad. It is an energy storage device between a battery and a capacitor. It has the characteristics of high charge and discharge eff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/24
CPCH01G11/24H01G11/86Y02E60/13
Inventor 于占军王献立曾凡光杜银霄袁庆新李明玉付林杰陈冬霞麻华丽
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS