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Cobaltosic oxide @ sulfur cobalt acid nickel core shell nanoflower array, manufacturing method and application thereof

A technology of cobalt trioxide and nanoflowers, which is applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of limiting the practical application of traditional capacitor materials, limited cycle life, and poor rate performance, reaching High reproducibility, high energy density and power density, low cost effect

Active Publication Date: 2017-01-18
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of the above materials, such as limited cycle life, poor rate performance, and high price, greatly limit the practical application of traditional capacitor materials.

Method used

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  • Cobaltosic oxide @ sulfur cobalt acid nickel core shell nanoflower array, manufacturing method and application thereof
  • Cobaltosic oxide @ sulfur cobalt acid nickel core shell nanoflower array, manufacturing method and application thereof
  • Cobaltosic oxide @ sulfur cobalt acid nickel core shell nanoflower array, manufacturing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A preparation method of cobalt tetraoxide nanometer material, comprising the following steps:

[0040] (1) Dissolve 0.476g of cobalt chloride hexahydrate, 0.300g of ammonium fluoride, and 0.600g of urea in 40mL of distilled water at room temperature under magnetic stirring conditions.

[0041] (2) The mixed solution is transferred to the reaction kettle. 2×3cm 2 After cleaning and treating nickel foams of large and small sizes, immerse them in the reactor, seal the reactor, and react at 120°C for 9 hours. After the reaction kettle was naturally cooled to room temperature, the nickel foam was taken out, washed several times with ethanol and distilled water respectively, and then dried in a drying oven at 60°C for 12 hours;

[0042] (3) Calcining the dried nickel foam at 300°C in an air atmosphere for 3 hours to obtain the precursor of cobalt tetraoxide nanoflowers, the morphology of which is as follows: figure 1 , figure 2 shown.

[0043] The cleaning method is: un...

Embodiment 2

[0046] A preparation method of cobalt, nickel composite nano flower array, comprising the following steps:

[0047] (1) Dissolve 0.476g of cobalt chloride hexahydrate, 0.300g of ammonium fluoride, and 0.600g of urea in 40mL of distilled water at room temperature under magnetic stirring conditions.

[0048] (2) The mixed solution is transferred to the reaction kettle. 2×3cm 2 After cleaning and treating nickel foams of different sizes, immerse them in the reactor, seal the reactor, and react at 120°C for 9 hours. After the reactor was naturally cooled to room temperature, the nickel foam was taken out and washed several times with ethanol and distilled water respectively.

[0049](3) Dissolve 0.291 g of nickel nitrate hexahydrate and 0.600 g of urea in 40 mL of distilled water at room temperature under stirring conditions. The mixed solution is transferred to the reaction kettle, the nickel foam after the first step of reaction is immersed in the reaction solution in the ket...

Embodiment 3

[0052] A preparation method of tricobalt tetroxide@sulfur cobaltate nickel core-shell nanoflower array, comprising the following steps:

[0053] (1) Dissolve 0.476g of cobalt chloride hexahydrate, 0.300g of ammonium fluoride, and 0.600g of urea in 40mL of double-distilled water at room temperature under magnetic stirring conditions.

[0054] (2) The mixed solution is transferred to the reaction kettle. 2×3cm 2 After cleaning and treating nickel foams of large and small sizes, immerse them in the reactor, seal the reactor, and react at 120°C for 9 hours. After the reactor was naturally cooled to room temperature, the nickel foam was taken out, and washed several times with ethanol and distilled water respectively.

[0055] (3) Dissolve 0.291 g of nickel nitrate hexahydrate and 0.600 g of urea in 40 mL of twice distilled water at room temperature under stirring conditions. The mixed solution is transferred to the reaction kettle, the nickel foam after the reaction in step (2)...

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Abstract

The invention provides a cobaltosic oxide @ sulfur cobalt acid nickel core shell nanoflower array, a manufacturing method and an application thereof. In the invention, foamed nickel is used as a substrate to synthesize a cobaltosic oxide nanoflower precursor and the cobaltosic oxide @ sulfur cobalt acid nickel core shell nanoflower array. The structure has good electrical conductivity and high permeability and is applied in a super capacitor. Cyclic voltammetry, static state charge and discharge and other tests are performed on the structure. Compared to the prior art, by using the array, the method and the application of the invention, a synthetic method possesses advantages that reappearance is high; product purity is high too; energy consumption is low; cost is low and so on. A synthesized material possesses advantages that conductivity is good; a chemical property is stable; crystallinity is good and so on. On an aspect of a super capacitor application, compared to a traditional material, the material has better ratio performance, a longer cycle life and a higher energy density and a power density.

Description

technical field [0001] The invention belongs to the field of nanomaterial preparation and electrochemical application, and relates to a core-shell nanoflower array of tricobalt tetroxide@nickel sulfur cobaltate, a preparation method and an application thereof. Background technique [0002] With the rapid development of the world economy, the energy crisis and environmental pollution have become important issues facing mankind, and it is imminent to develop a clean and sustainable energy or energy storage method. [0003] Supercapacitors have been widely studied due to their long life, high energy storage efficiency, and high energy density. Traditional supercapacitor materials are mainly divided into three types: transition metal oxides / hydroxides, carbon-based materials, and conductive polymers. However, the disadvantages of the above materials, such as limited cycle life, poor rate performance, and high price, greatly limit the practical application of traditional capacit...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/46H01G11/86B82Y30/00B82Y40/00
CPCY02E60/13H01G11/30B82Y30/00B82Y40/00H01G11/46H01G11/86
Inventor 张小俊王明月
Owner ANHUI NORMAL UNIV
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