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Preparation method for flexible solid supercapacitor Cu(OH)2@Ni2(OH)2CO3 multistage nanoarray electrodes

A supercapacitor and nanoarray technology, which is applied in the manufacture of hybrid/electric double layer capacitors, nanotechnology, nanotechnology, etc., to achieve the effects of economical and environmentally friendly preparation, large specific surface area, and favorable transmission.

Inactive Publication Date: 2016-10-05
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is challenging to fabricate practical and flexible solid-state supercapacitors with excellent performance. Fortunately, this problem can be solved by allowing ideal capacitive materials to grow in situ on flexible conductive substrates.

Method used

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  • Preparation method for flexible solid supercapacitor Cu(OH)2@Ni2(OH)2CO3 multistage nanoarray electrodes
  • Preparation method for flexible solid supercapacitor Cu(OH)2@Ni2(OH)2CO3 multistage nanoarray electrodes
  • Preparation method for flexible solid supercapacitor Cu(OH)2@Ni2(OH)2CO3 multistage nanoarray electrodes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The treated foam copper (1×3cm 2 ) in diluted hydrochloric acid, absolute ethanol, and deionized water for 5 minutes, and dried in air. Prepare 2M sodium hydroxide solution and 0.2M ammonium persulfate solution, take 10ml each in a beaker, and stir well. Immerse the washed copper foam into the above mixed solution, shake the beaker in due course, and react at room temperature for 6 minutes. When the surface color of the foamed copper turns into light blue, the sample is taken out, washed alternately with absolute ethanol and deionized water, placed in a vacuum drying oven, and dried at 60°C for 5 hours. Then prepare 2mM nickel nitrate hexahydrate solution and 4mM urea solution, take 10ml of each in a 20ml reaction kettle, and place the above-mentioned dried samples in the mixed solution. Then the reactor was heated to 100°C in an oven, and after 5 hours, the samples (ie, electrodes) were taken out, washed alternately with absolute ethanol and deionized water, placed i...

Embodiment 2

[0049] The treated foam copper (1×3cm 2 ) in diluted hydrochloric acid, absolute ethanol, and deionized water for 5 minutes, and dried in air. Prepare 2M sodium hydroxide solution and 0.2M ammonium persulfate solution, take 10ml each in a beaker, and stir well. Immerse the washed copper foam into the above mixed solution, shake the beaker in due time, and react at room temperature for 9 minutes. When the surface color of the foamed copper turns into light blue, the sample is taken out, washed alternately with absolute ethanol and deionized water, placed in a vacuum drying oven, and dried at 60°C for 5 hours. Then prepare 2mM nickel nitrate hexahydrate solution and 4mM urea solution, take 10ml of each in a 20ml reaction kettle, and place the above-mentioned dried samples in the mixed solution. Then the reactor was heated to 100°C in an oven, and after 5 hours, the samples (ie, electrodes) were taken out, washed alternately with absolute ethanol and deionized water, placed in ...

Embodiment 3

[0051] The treated foam copper (1×3cm 2 ) in diluted hydrochloric acid, absolute ethanol, and deionized water for 5 minutes, and dried in air. Prepare 2M sodium hydroxide solution and 0.2M ammonium persulfate solution, take 10ml each in a beaker, and stir well. Immerse the cleaned copper foam into the above mixed solution, shake the beaker in due course, and react at room temperature for 12 minutes. When the surface color of the foamed copper turns into light blue, the sample is taken out, washed alternately with absolute ethanol and deionized water, placed in a vacuum drying oven, and dried at 60°C for 5 hours. Then prepare 2mM nickel nitrate hexahydrate solution and 4mM urea solution, take 10ml of each in a 20ml reaction kettle, and place the above-mentioned dried samples in the mixed solution. Then the reactor was heated to 100°C in an oven, and after 5 hours, the samples (ie, electrodes) were taken out, washed alternately with absolute ethanol and deionized water, placed...

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Abstract

The invention discloses a method for in-situ growth of flexible solid supercapacitor CUNI multistage nanoarray electrodes on a foamy copper substrate. Firstly in-situ growth of a Cu(OH)2 nanorod array having a regular structure is performed on the foamy copper substrate, and then sheet-shaped Ni2(OH)2CO3 is grown on the surface of the Cu(OH)2 nanorods by utilizing hydrothermal reaction so that the CUNI multistage nanoarray electrodes are formed. The Cu(OH)2 nanorods act as a framework so that ohmic resistance between electrode active material and the substrate can be reduced and electron transmission can be promoted. The Ni2(OH)2CO3 nanosheets wrapping the external layer have high theoretical Faraday capacitance value and also have large specific surface area. The multistage nanoarray electrodes of the novel structure are high in electric conductivity, large in specific surface area and stable in performance so as to be the ideal electrode material for a flexible solid supercapacitor of excellent development performance.

Description

technical field [0001] The invention belongs to the field of synthesis of nanomaterials, in particular to a method for in-situ growth of copper hydroxide nucleobase and nickel carbonate shell (Cu(OH) 2 @Ni 2 (OH) 2 CO 3 , CUNI) method for multilevel nanoarray electrodes. Background technique [0002] As one of the most suitable energy storage devices, supercapacitors have attracted much attention due to their advantages such as high power density, fast charging speed, good cycle stability, and long service life. Transition metal oxides and hydroxides are considered as ideal capacitor materials due to their diverse forms and high electrical conductivity. Among them, basic carbonates are low in cost, environmentally friendly, easy to prepare, and have high theoretical capacitance values, which have become a research hotspot for scientific researchers. In recent years, supercapacitors have developed towards the direction of flexible solid state, in order to develop a new t...

Claims

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Application Information

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IPC IPC(8): H01G11/86B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01G11/86Y02E60/13
Inventor 李士阔朱胜
Owner ANHUI UNIVERSITY
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