Polypyrrole-coated nickel cobalt sulfide nanotube material, preparation method and applications

A polypyrrole nanometer, cobalt-nickel sulfide technology, applied in the field of materials, can solve the problems of poor structural stability of cobalt-nickel sulfide, lower actual specific capacitance, easy polarization of electrodes, etc., achieve good electrical conduction, high specific capacitance, and improve cycle performance effect

Active Publication Date: 2016-12-21
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some cobalt-nickel sulfide materials are directly grown on the foamed nickel substrate. Although the surface utilization rate of the material is high, there are also two shortcomings: one is that the structural stability of cobalt-nickel sulfide is poor, resulting in low cycle life; the other is When the cobalt-nickel sulfide size is long, such as long nanowires and nanotubes, the electrical conduction between the peripheral material and the current collector foam nickel is still slow, resulting in easy polarization of the electrode and reducing the actual specific capacitance.

Method used

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  • Polypyrrole-coated nickel cobalt sulfide nanotube material, preparation method and applications
  • Polypyrrole-coated nickel cobalt sulfide nanotube material, preparation method and applications
  • Polypyrrole-coated nickel cobalt sulfide nanotube material, preparation method and applications

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Take 0.47g Ni(NO 3 ) 2 ·6H 2 O, 0.77g CoCl 2 ·6H 2 O, 2.00g of urea and 0.8g of hexamethylenetetramine were dissolved in 80mL of deionized water, and the resulting mixed solution was transferred into a polytetrafluoroethylene reactor with a volume of 100mL, and the cleaned foamed nickel (2×2cm 2 ) into the mixed solution, then seal the reaction vessel, put it into an oven and heat it to 120°C for 6 hours, cool it down to room temperature naturally, take out the nickel foam that has grown the precursor, wash it with deionized water for 5 times, and then dry it at 60°C for 12 hours to obtain Dry nickel foam from the grown precursor.

[0051] Take 0.768g Na 2 S·9H 2 O was dissolved in 80 mL deionized water, and the resulting Na 2 The S solution was moved into a polytetrafluoroethylene reactor with a volume of 100mL, and the dried nickel foam of the grown precursor was immersed in Na 2 S solution, then close the reaction kettle, put it into an oven and heat it to 16...

Embodiment 2

[0067] Take 0.40g Ni(NO 3 ) 2 ·6H 2 O, 0.70g CoCl 2 ·6H 2O, 1.90g of urea and 0.7g of hexamethylenetetramine were dissolved in 79mL of deionized water, and the resulting mixed solution was transferred into a polytetrafluoroethylene reactor with a volume of 100mL, and the cleaned foamed nickel (2×2cm 2 ) into the mixed solution, then seal the reaction vessel, put it in an oven and heat it to 110°C for 5 hours, cool it down to room temperature naturally, take out the nickel foam that has grown the precursor, wash it with deionized water for 5 times, and then dry it at 50°C for 14 hours to obtain Dry nickel foam from the grown precursor.

[0068] Take 0.72g Na 2 S·9H 2 O was dissolved in 80 mL deionized water, and the resulting Na 2 The S solution was moved into a polytetrafluoroethylene reactor with a volume of 100mL, and the dried nickel foam of the grown precursor was immersed in Na 2 S solution, then close the reaction kettle, put it into an oven and heat it to 150°C ...

Embodiment 3

[0077] Take 0.50g Ni(NO 3 ) 2 ·6H 2 O, 0.80g CoCl 2 ·6H 2 O, 2.20g of urea and 0.9g of hexamethylenetetramine were dissolved in 81mL of deionized water, and the resulting mixed solution was transferred into a polytetrafluoroethylene reactor with a capacity of 100mL, and the cleaned foamed nickel (2×2cm 2 ) into the mixed solution, then close the reaction vessel, put it into an oven and heat it to 130°C for 7 hours, cool it down to room temperature naturally, take out the nickel foam that has grown the precursor, wash it with deionized water for 5 times, and then dry it at 70°C for 11 hours to obtain Dry nickel foam from the grown precursor.

[0078] Take 0.832g Na 2 S·9H 2 O was dissolved in 90 mL deionized water, and the resulting Na 2 The S solution was moved into a polytetrafluoroethylene reactor with a volume of 100mL, and the dried nickel foam of the grown precursor was immersed in Na 2 S solution, then close the reaction kettle, put it into an oven and heat it to...

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Abstract

The invention discloses a polypyrrole-coated nickel cobalt sulfide nanotube material, which is composed of nickel foam, nickel cobalt sulfide nanotubes and a polypyrrole nano film, wherein the nickel cobalt sulfide nanotubes grow on the nickel foam to form a nickel cobalt sulfide nanotube array; polypyrrole continuously grows on the surfaces of the nickel cobalt sulfide nanotubes to form the polypyrrole nano film; and the polypyrrole nano film is tightly combined with the surfaces of the nickel cobalt sulfide nanotubes, and no gap is left. The invention also provides a method of preparing the polypyrrole-coated nickel cobalt sulfide nanotube material. The material is used as a super capacitor electrode material, and has the advantages that the specific capacitance is high, the rate capability is good, and the cycling performance is improved significantly.

Description

technical field [0001] The invention relates to a polypyrrole-coated cobalt-nickel sulfide nanotube material, a preparation method and an application, and belongs to the field of material technology. Background technique [0002] Supercapacitor, also known as electrochemical capacitor, is a new type of energy storage device between traditional capacitors and batteries. It has higher energy density than traditional capacitors and higher power density than secondary batteries. With the advantages of short discharge time, high charge and discharge efficiency, long cycle life, no memory effect, and basically maintenance-free, it has important and broad application prospects in mobile communications, information technology, consumer electronics, electric vehicles, aerospace and defense technologies, etc. , has become a research hotspot all over the world. [0003] According to the charge storage mechanism of electrode materials, supercapacitors can be divided into electric doubl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/48H01G11/86B82Y30/00B82Y40/00
CPCY02E60/13H01G11/24B82Y30/00B82Y40/00H01G11/30H01G11/48H01G11/86
Inventor 严微微
Owner CHINA JILIANG UNIV
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