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Preparation method for nickel ferrite supercapacitor electrode material taking foamed nickel as substrate

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 difficulty in large-scale commercial application and expensive precious metals, and achieve good development prospects and preparation methods. Simple, well-structured effects

Inactive Publication Date: 2017-07-07
XINYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although noble metal oxides represented by ruthenium dioxide have good capacitance properties, due to the high price of noble metals, it is difficult to achieve large-scale commercial applications except for a few fields (such as: military, aerospace, etc.)

Method used

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  • Preparation method for nickel ferrite supercapacitor electrode material taking foamed nickel as substrate
  • Preparation method for nickel ferrite supercapacitor electrode material taking foamed nickel as substrate
  • Preparation method for nickel ferrite supercapacitor electrode material taking foamed nickel as substrate

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The nickel foam was ultrasonically cleaned with acetone, 1 M hydrochloric acid, ethanol and deionized water for 15 min, and then dried at 60 °С. Use 1 mM nickel chloride hexahydrate, 2 mM ferric chloride, 2 mM cetyltrimethylammonium bromide, 4.5 mM urea and 40mL water to prepare the precursor solution, stir at room temperature for 30 min to mix the precursor solution Evenly, put it into a stainless steel high-pressure reactor lined with polytetrafluoroethylene; put the dried nickel foam into the inner tank of the reactor, seal it, and place it in an oven at 100 °С for 16 h. After the reaction is completed, it will naturally After cooling to room temperature, the product was collected, washed several times with distilled water and ethanol, and dried at 60°С for 12 hours. The dried nickel foam was placed in a tube furnace and annealed at 350 °С in an air atmosphere for 2 hours to obtain a nickel ferrite supercapacitor electrode material based on nickel foam.

Embodiment 2

[0030] The nickel foam was ultrasonically cleaned with acetone, 1 M hydrochloric acid, ethanol and deionized water for 15 min, and then dried at 60 °С. Use 1 mM nickel chloride hexahydrate, 2 mM ferric chloride, 2 mM cetyltrimethylammonium bromide, 4.5 mM urea and 40mL water to prepare the precursor solution, stir at room temperature for 30 min to mix the precursor solution Uniformly, put the above precursor solution in the reactor liner made of polytetrafluoroethylene; put the dried nickel foam into the reactor liner, then seal it with a stainless steel high-pressure reactor, and place it in an oven at 110 °С After the reaction was completed, it was naturally cooled to room temperature, and the collected product was washed several times with distilled water and ethanol, respectively, and dried at 60°С for 12 hours. The dried nickel foam material was placed in a tube furnace and annealed at 350°С in an air atmosphere for 2 hours to obtain a nickel ferrite supercapacitor electr...

Embodiment 3

[0032] The nickel foam was ultrasonically cleaned with acetone, 1 M hydrochloric acid, ethanol and deionized water for 15 min, and then dried at 60 °С. Use 1 mM nickel chloride hexahydrate, 2 mM ferric chloride, 2 mM cetyltrimethylammonium bromide, 4.5 mM urea and 40mL water to prepare the precursor solution, stir at room temperature for 30 min to mix the precursor solution Uniformly, put the above precursor solution in the reactor liner made of polytetrafluoroethylene; put the dried nickel foam into the reactor liner, then seal it with a stainless steel reactor, and place it in an oven at 120 °С Reacted for 16 h, cooled naturally to room temperature after the reaction was completed, collected products were washed several times with distilled water and ethanol, and dried at 60 °С for 12 h. The dried nickel foam material was placed in a tube furnace and annealed at 350 °С in an air atmosphere for 2 hours to obtain a nickel ferrite nanostructure supercapacitor electrode material...

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Abstract

The invention discloses a preparation method for a nickel ferrite supercapacitor electrode material taking foamed nickel as a substrate. The preparation method comprises the following steps of (1) preparing nickel nitrate hexahydrate, ferric chloride, hexadecyl trimethyl ammonium bromide, urea and deionized water to obtain a precursor solution; (2) adding the precursor solution obtained in the step (1) into an inner container of a reaction kettle, performing stirring for 30-40 minutes so that the mixture is uniformly mixed; (3) placing the foamed nickel after being processed in the inner container of the reaction kettle in the step (2), and performing hydrothermal reaction after sealing; (4) naturally cooling after completion of hydrothermal reaction, taking out the foamed nickel, and performing washing and drying; and (5) performing thermal processing in a tubular furnace in an air atmosphere to obtain the nickel ferrite supercapacitor electrode material. The preparation method is simple, is low in cost and high in yield, and the prepared electrode material has relatively high specific capacity and favorable stability, is long in service lifetime, and simultaneously also has good electrochemical activity.

Description

technical field [0001] The invention belongs to the field of preparation of capacitor electrode materials, in particular to a preparation method of a nickel ferrite supercapacitor electrode material based on nickel foam. Background technique [0002] With the increasingly serious energy crisis and environmental pollution, the development of new clean energy has become an inevitable choice for the sustainable development of human society. The so-called new clean energy mainly includes renewable energy such as solar energy, wind energy, geothermal energy, tidal energy and biomass energy. Energy storage is inseparable from energy storage devices. As a new type of energy storage device, supercapacitors have been paid more and more attention because of their irreplaceable superiority. [0003] Supercapacitors are now universal It is used in many fields such as portable electronic equipment, electric vehicles, data memory storage, and energy storage power supply, and the key ele...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/24H01G11/30
CPCH01G11/24H01G11/30H01G11/86Y02E60/13
Inventor 方林霞王凡兰梦迪翟田莉陈政华胡蒙蒙张翠杰
Owner XINYANG NORMAL UNIVERSITY
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