Cobaltosic oxide and cobalt molybdate core-shell heterostructure nanowire array, preparation method and application thereof

A technology of cobalt trioxide nanometer and cobalt trioxide, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of low energy density and power density, difficult to meet application requirements, small active area, etc. Achieve the effects of high energy density and power density, good crystal shape, and large specific capacitance

Active Publication Date: 2015-07-01
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] 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, l

Method used

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  • Cobaltosic oxide and cobalt molybdate core-shell heterostructure nanowire array, preparation method and application thereof
  • Cobaltosic oxide and cobalt molybdate core-shell heterostructure nanowire array, preparation method and application thereof
  • Cobaltosic oxide and cobalt molybdate core-shell heterostructure nanowire array, preparation method and application thereof

Examples

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Embodiment 1

[0034] A preparation method of tricobalt tetroxide and cobalt molybdate core-shell heterostructure nanowire array, comprising the following steps:

[0035] a. Put the nickel foam with impurities on the surface into dilute hydrochloric acid, ethanol, and double distilled water in turn for ultrasonic cleaning for 20 minutes;

[0036] b. Mix 40mL double-distilled water, 2mmol cobalt chloride hexahydrate, 4mmol ammonium fluoride and 10mmol urea evenly and add them into a 60mL reaction kettle, immerse the treated foamed nickel into the mixture, pour it into the reaction kettle, and tighten the kettle Cover, react at 100°C for 8 hours, take out the reactor and cool it down to room temperature naturally, rinse with ethanol and double distilled water successively, dry at room temperature, and calcinate at 400°C for 3 hours in an air atmosphere to prepare cobalt trioxide nanowire materials.

[0037] c. Dissolve 1mmol sodium molybdate dihydrate and 10mmol urea in 40mL double-distilled w...

Embodiment 2

[0043] A preparation method of tricobalt tetroxide and cobalt molybdate core-shell heterostructure nanowire array, comprising the following steps:

[0044] a. Put the nickel foam with impurities on the surface into dilute hydrochloric acid, ethanol, and double distilled water in turn for ultrasonic cleaning for 20 minutes;

[0045] b. Mix 40mL double-distilled water, 2mmol cobalt chloride hexahydrate, 4mmol ammonium fluoride and 10mmol urea evenly and add them into a 60mL reaction kettle, immerse the treated foamed nickel into the mixture, pour it into the reaction kettle, and tighten the kettle Cover, react at 100°C for 8 hours, take out the reactor and cool it down to room temperature naturally, rinse with ethanol and double distilled water successively, dry at room temperature, and calcinate at 400°C for 3 hours in an air atmosphere to prepare cobalt trioxide nanowire materials.

[0046] c. Dissolve 1mmol sodium molybdate dihydrate and 10mmol urea in 40mL double-distilled w...

Embodiment 3

[0049] A preparation method of tricobalt tetroxide and cobalt molybdate core-shell heterostructure nanowire array, comprising the following steps:

[0050] a. Put the nickel foam with impurities on the surface into dilute hydrochloric acid, ethanol, and double distilled water in turn for ultrasonic cleaning for 20 minutes;

[0051] b. Mix 40mL double-distilled water, 2mmol cobalt chloride hexahydrate, 4mmol ammonium fluoride and 10mmol urea evenly and add them into a 60mL reaction kettle, immerse the treated foamed nickel into the mixture, pour it into the reaction kettle, and tighten the kettle Cover, react at 100°C for 8 hours, take out the reactor and cool it down to room temperature naturally, rinse with ethanol and double distilled water successively, dry at room temperature, and calcinate at 300°C for 3 hours in an air atmosphere to prepare the cobalt trioxide nanowire material.

[0052] c. Dissolve 1mmol sodium molybdate dihydrate and 10mmol urea in 40mL double-distille...

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Abstract

The invention discloses a cobaltosic oxide and cobalt molybdate core-shell heterostructure nanowire array, a preparation method and application thereof. The preparation method includes two steps: taking cobaltosic oxide nanowires as a framework; coating a cobalt molybdate nano thin film material outside the framework. The array perpendicularly grows, is orderly in arrangement, has regular three-dimensional heterostructure and can directly serve as an electrode material of a supercapacitor. Compared with the prior art, the preparation method has the advantages that a product is high in purity, good in dispersibility, good in crystalline form and controllable, and the preparation method is low in production cost and high in reproducibility. Serving as the electrode material of the supercapacitor, long circulating stability, high specific capacitance, high energy density and power density are realized.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a core-shell heterostructure nanowire array of tricobalt tetroxide and cobalt molybdate, 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. [0003] 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 mak...

Claims

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Application Information

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IPC IPC(8): H01G11/46H01G11/30B82Y30/00B82Y40/00
CPCY02E60/13H01G11/46B82Y30/00B82Y40/00H01G11/30
Inventor 张小俊顾正翔汪阮峰
Owner ANHUI NORMAL UNIV
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