Pine needle-shaped nickel-cobalt-copper basic carbonate nano composite material as well as preparation method and application thereof

A nanocomposite material, carbonate technology, applied in nanotechnology, nanotechnology, hybrid/electric double layer capacitor manufacturing and other directions, can solve problems such as poor conductivity, structural instability, etc. The effect of high charge transfer rate and charge transfer efficiency

Active Publication Date: 2020-03-17
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, poor electrical conductivity and their structural instability greatly hinder the development of NiCoCu composites in the field of supercapacitors

Method used

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  • Pine needle-shaped nickel-cobalt-copper basic carbonate nano composite material as well as preparation method and application thereof
  • Pine needle-shaped nickel-cobalt-copper basic carbonate nano composite material as well as preparation method and application thereof
  • Pine needle-shaped nickel-cobalt-copper basic carbonate nano composite material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A preparation method of pine needle-shaped nickel-cobalt-copper basic carbonate nanocomposite material activated by cyclic voltammetry, specifically comprising the following steps:

[0040] 1) Dissolve 1.8g of ammonium persulfate and 2.4g of sodium hydroxide in 40ml of deionized water and stir continuously for 20 minutes to form a uniform transparent mixed alkaline etching solution with a surface area of ​​4cm 2 , soak copper foam with a thickness of 1mm in the above mixture, chemically etch at 25°C for 20 minutes, wash with deionized water three times, and dry at 80°C to obtain foamed copper sheets with copper hydroxide nanorods grown;

[0041] 2) 0.58g cobalt nitrate, 0.29g nickel nitrate, 0.9g urea and 0.46g ammonium acetate were dissolved in deionized water, and stirred continuously for 20 minutes to form a uniform transparent mixed solution, and the grown copper hydroxide nanorod obtained in 1) was The foamed copper sheet was placed in the solution under hydrotherm...

Embodiment 2

[0057] A preparation method of pine needle-shaped nickel-cobalt-copper basic carbonate nanocomposite material activated by cyclic voltammetry, specifically comprising the following steps:

[0058] 1) Dissolve 1.8g of ammonium persulfate and 1.5g of sodium hydroxide in 40ml of deionized water and stir continuously for 20 minutes to form a uniform transparent mixed alkaline etching solution with a surface area of ​​4cm 2 , soak copper foam with a thickness of 3mm in the above mixed solution, chemically etch at 25°C for 5 minutes, wash with deionized water three times, and dry at 80°C to obtain foamed copper sheets with copper hydroxide nanorods grown;

[0059] 2) Dissolve 0.58g of cobalt nitrate, 0.29g of nickel nitrate, 1.8g of urea and 0.46g of ammonium acetate in deionized water, and stir continuously for 20 minutes to form a uniform transparent mixed solution. The grown copper hydroxide obtained by chemical etching in 1) The foamed copper sheets of nanorods were placed in th...

Embodiment 3

[0064] A preparation method of pine needle-shaped nickel-cobalt-copper basic carbonate nanocomposite material activated by cyclic voltammetry, specifically comprising the following steps:

[0065] 1) Dissolve 1.8g of ammonium persulfate and 2.8g of sodium hydroxide in 40ml of deionized water and stir continuously for 20 minutes to form a uniform transparent mixed alkaline etching solution with a surface area of ​​4cm 2 , foamed copper with a thickness of 1mm is immersed in the above mixture, chemically etched at 25°C for 10 minutes, washed with deionized water three times, and dried at 80°C to obtain foamed copper sheets with copper hydroxide nanorods grown;

[0066]2) Dissolve 0.29g cobalt nitrate, 0.58g nickel nitrate, 0.9g urea and 0.46g ammonium acetate in deionized water, stir continuously for 20 minutes to form a uniform and transparent mixed solution, and chemically etch the grown copper hydroxide obtained in 1) The foamed copper sheets of the nanorods are placed in the...

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Abstract

The invention relates to a pine needle-shaped nickel-cobalt-copper basic carbonate nano composite material as well as a preparation method and application thereof. The nano composite material is in apine needle shape and is composed of copper hydroxide nanorods and nickel-cobalt-copper basic carbonate nanoneedles arranged on the copper hydroxide nanorods, wherein the nickel-cobalt-copper basic carbonate is a mixture of copper-nickel basic carbonate and copper-cobalt basic carbonate. The preparation method comprises the following steps of carrying out chemical etching on a foam copper sheet togrow a copper hydroxide nanorod, and then growing a nickel-cobalt-copper basic carbonate nanoneedle on the copper hydroxide nanorod through hydrothermal reaction to obtain the pine needle-shaped nickel-cobalt-copper basic carbonate nano composite material. The nano composite material is excellent in electrochemical performance, relatively higher in area specific volume and good in rate capability, is excellent in electrochemical performance when being used for an asymmetric supercapacitor, and has the ultra-long service life, the preparation method is simple, the raw materials are easy to obtain, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic composite material synthesis, in particular to a pine needle-shaped nickel-cobalt-copper basic carbonate nano-composite material and a preparation method and application thereof. Background technique [0002] Supercapacitors are currently the most popular energy storage devices, which include two different types of energy storage mechanisms: electrochemical double layer capacitors and pseudocapacitor capacitors, which are prominent for their high power density, long life, high power output, high power output, etc. Merit becomes one of the most promising candidates. With the rapid development of electronic devices and hybrid electric vehicles, assembling supercapacitors with high energy density, fast charge-discharge performance, and higher growth and upward potential is a solution to the rapidly growing environment-friendly renewable energy devices in the current society. An effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/86B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01G11/24H01G11/30H01G11/86Y02E60/13
Inventor 程蓓徐李倩昀余家国张留洋
Owner WUHAN UNIV OF TECH
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