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ZnCo2O4@MnO core-shell heterostructure nanotube array material, and preparation method and application thereof

A nanotube array and manganese dioxide technology, applied in the field of nanomaterials, can solve the problems of low energy density and power density, difficult application requirements, short cycle time, etc., achieve high energy density and power density, low production cost, good reproducibility

Inactive Publication Date: 2015-03-25
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, it is found that these traditional electrode materials have more or less their own defects, such as: small active area, poor conductivity, low capacitance, short cycle time, low energy density and power density, due to The existence of these defects makes it difficult to meet the higher application requirements in reality

Method used

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  • ZnCo2O4@MnO core-shell heterostructure nanotube array material, and preparation method and application thereof
  • ZnCo2O4@MnO core-shell heterostructure nanotube array material, and preparation method and application thereof
  • ZnCo2O4@MnO core-shell heterostructure nanotube array material, and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0027] A preparation method of zinc cobaltate manganese dioxide core-shell heterostructure nanotube array material, comprising the following steps:

[0028] a. Put the nickel sheet with impurities on the surface into ethanol, acetone, dilute hydrochloric acid, and twice distilled water for 15 minutes of ultrasonic cleaning;

[0029] b. Mix 25mL double-distilled water, 0.2mmol zinc chloride, 0.4mmol cobalt chloride hexahydrate, 1mmol urea and 0.4mmol ammonium fluoride and add them into a 60mL reaction kettle, immerse the treated foamed nickel in the mixture, Tighten the lid of the kettle, react at 120°C for 7 hours, take out the reaction kettle and cool it down to room temperature naturally, rinse it with ethanol and double distilled water in turn, and dry it at room temperature, that is, nickel foam with zinc cobaltate nanowire arrays grown.

[0030] c. Dissolve 0.079015g potassium permanganate in 25mL double distilled water, add 0.25mL 12molL -1 Concentrated hydrochloric aci...

Embodiment 2

[0036] A preparation method of zinc cobaltate manganese dioxide core-shell heterostructure nanotube array material, comprising the following steps:

[0037] a. Put the nickel sheet with impurities on the surface into ethanol, acetone, dilute hydrochloric acid, and twice distilled water for 15 minutes of ultrasonic cleaning;

[0038] b. Mix 30mL double-distilled water, 0.3mmol zinc chloride, 0.5mmol cobalt chloride hexahydrate, 2mmol urea and 0.5mmol ammonium fluoride and add them into a 60mL reaction kettle, immerse the treated foamed nickel in the mixture, Tighten the lid of the kettle, react at 100°C for 9 hours, take out the reaction kettle and let it cool down to room temperature naturally, rinse it with ethanol and double distilled water in turn, and dry it at room temperature, that is, nickel foam with zinc cobaltate nanowire arrays grown.

[0039] c. Dissolve 0.079015g potassium permanganate in 25mL double distilled water, add 0.1mL 12mol L -1Concentrated hydrochloric ...

Embodiment 3

[0042] A preparation method of zinc cobaltate manganese dioxide core-shell heterostructure nanotube array material, comprising the following steps:

[0043] a. Put the nickel sheet with impurities on the surface into ethanol, acetone, hydrochloric acid, and twice distilled water for 15 minutes of ultrasonic cleaning;

[0044] b. Mix 25mL double-distilled water, 0.3mmol zinc chloride, 0.6mmol cobalt chloride hexahydrate, 1mmol urea and 0.4mmol ammonium fluoride evenly and add them to a 60mL reaction kettle, immerse the treated foamed nickel in the mixture, Tighten the lid of the kettle, react at 120°C for 5 hours, take out the reaction kettle and let it cool down to room temperature naturally, rinse it with ethanol and double distilled water in turn, and dry it at room temperature to obtain foamed nickel with zinc cobaltate nanowire arrays grown.

[0045] c. Dissolve 0.15803g potassium permanganate in 30mL double distilled water, add 0.25mL 12mol L -1 Concentrated hydrochloric...

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Abstract

The invention provides a preparation method and application of a ZnCo2O4@MnO core-shell heterostructure nanotube array material. According to the prepared product, a ZnCo2O4 nanowire serves as a framework and is wrapped with a MnO nanofilm material, and the product grows vertically, is arranged orderly and has a regular three-dimensional heterostructure. Compared with the prior art, the product prepared through the preparation method is high in purity, good in dispersity, good and controllable in crystalline form, low in production cost and good in reproducibility. The prepared tubular ZnCo2O4@MnO core-shell heterostructure nanotube array grows on nickel foam, can serve as an electrode material of a super capacitor directly, has long-term circulatory stability, large specific capacitance and high energy density and power density, and has great commercial value.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and relates to a tubular zinc cobaltate manganese dioxide core-shell structure nanoarray, a preparation method and an application thereof. Background technique [0002] With the rapid development of science and technology and the upgrading of electronic products, the research on supercapacitor electrode materials has aroused great interest of researchers. At present, the traditional supercapacitor electrode materials mainly include the following categories: carbon material electrode materials, conductive polymer electrode materials, and metal oxide electrode materials. However, in practical applications, it is found that these traditional electrode materials have more or less their own defects, such as: small active area, poor conductivity, low capacitance, short cycle time, low energy density and power density, due to The existence of these defects makes it difficult to meet the hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/46H01G11/86
CPCY02E60/13H01G11/24H01G11/30H01G11/46H01G11/86
Inventor 张小俊马文勤南红红
Owner ANHUI NORMAL UNIV
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