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Nickel cobalt oxide<@>manganese dioxide nuclear shell heterostructure nanowire array grown on carbon cloth and preparation method and application thereof

A nanowire array and heterostructure technology, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve problems such as low energy density and power density, small active area of ​​nanomaterials, and difficulty in meeting application requirements. , to achieve high energy density and power density, good reproducibility, and good crystal shape

Inactive Publication Date: 2017-02-01
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, single nanomaterials have disadvantages 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, their further development in capacitors is limited, and it is difficult to meet the reality Higher application requirements in

Method used

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  • Nickel cobalt oxide&lt;@&gt;manganese dioxide nuclear shell heterostructure nanowire array grown on carbon cloth and preparation method and application thereof
  • Nickel cobalt oxide&lt;@&gt;manganese dioxide nuclear shell heterostructure nanowire array grown on carbon cloth and preparation method and application thereof
  • Nickel cobalt oxide&lt;@&gt;manganese dioxide nuclear shell heterostructure nanowire array grown on carbon cloth and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0036] A method for preparing nickel cobaltate@manganese dioxide core-shell heterostructure nanowire arrays grown on carbon cloth, comprising the following steps:

[0037] a. Put the carbon cloth with impurities on the surface into dilute sulfuric acid, double distilled water, and ethanol in sequence for ultrasonic cleaning for 15 minutes;

[0038] b. Mix 40mL double-distilled water, 2mmol nickel chloride hexahydrate, 4mmol cobalt chloride hexahydrate, 15mmol cetyltrimethylammonium bromide and 9mmol urea, and then add them to a 60mL reactor, and place the treated carbon Immerse the cloth in the mixed solution, pour it into the reaction kettle, tighten the lid of the kettle, react at 110°C for 7 hours, take out the reaction kettle and cool it to room temperature naturally, wash with ethanol and double distilled water for 3-5 times respectively, rinse clean, and place in Drying at 60°C for 2h, and then calcining at 350°C for 3h in an air atmosphere, the nickel cobalt oxide nanow...

Embodiment 2

[0047] A method for preparing nickel cobaltate@manganese dioxide core-shell heterostructure nanowire arrays grown on carbon cloth, comprising the following steps:

[0048] a. Put the carbon cloth with impurities on the surface into dilute sulfuric acid, double distilled water, and ethanol in sequence for ultrasonic cleaning for 15 minutes;

[0049] b. Mix 40mL double-distilled water, 1mmol nickel chloride hexahydrate, 2mmol cobalt chloride hexahydrate, 9mmol urea, 15mmol cetyltrimethylammonium bromide and add them into a 60mL reaction kettle. Immerse in the mixed solution, pour it into the reaction kettle, tighten the lid of the kettle, react at 120°C for 6h, take out the reaction kettle and cool to room temperature naturally, rinse with ethanol and double distilled water in turn, dry at 60°C for 2h, and dry at 400°C Calcined for 3 hours under air atmosphere, the nickel cobalt oxide nanowire material was obtained.

[0050] c. Dissolve 0.079g of potassium permanganate in 40mL ...

Embodiment 3

[0055] A method for preparing nickel cobaltate@manganese dioxide core-shell heterostructure nanowire arrays grown on carbon cloth, comprising the following steps:

[0056] a. Put the carbon cloth with impurities on the surface into hydrochloric acid, ethanol, and double distilled water in sequence for ultrasonic cleaning for 20 minutes;

[0057] b. Mix 40mL double-distilled water, 1mmol nickel nitrate hexahydrate, 2mmol cobalt nitrate hexahydrate, 9mmol urea, 15mmol hexadecyltrimethylammonium bromide and add it into a 60mL reaction kettle. solution, pour it into the reaction kettle, tighten the lid of the kettle, react at 120°C for 6 hours, take out the reaction kettle and cool it to room temperature naturally, rinse it with ethanol and double-distilled water in turn, dry it at 60°C for 2 hours, and put it in an air atmosphere at 400°C Calcining at lower temperature for 3 hours, the nickel cobaltate nanowire material is obtained.

[0058] c. Dissolve 0.079g of potassium perma...

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Abstract

The invention provides a nickel cobalt oxide<@>manganese dioxide nuclear shell heterostructure nanowire array grown on carbon cloth and a preparation method and application thereof. Compared with the prior art, the product of the preparation method provided by the invention is high in purity, good in dispersibility, good and controllable in crystalline form, low in production cost and good in repeatability. The prepared nickel cobalt oxide<@>manganese dioxide nuclear shell heterostructure nanowire array grown on the carbon cloth can serve as an electrode material of a supercapacitor directly, long cycling stability, large specific capacitance, high energy density and power density are realized, and the nanowire array has a potential application value in the aspect of energy storage.

Description

technical field [0001] The invention belongs to the field of nanomaterial preparation, and specifically relates to a nickel cobaltate@manganese dioxide core-shell heterostructure nanowire array grown on carbon cloth, a preparation method and its application. Background technique [0002] With the increasing demand for energy storage in electric vehicles and mobile electronics, supercapacitors have attracted great interest from researchers. Supercapacitors, as high-performance, lightweight, and environmentally friendly energy storage devices, are urgently needed for sustainable development and renewable energy devices in the modern electronics industry. To meet the growing demand for high-energy storage devices, it is crucial to design and synthesize supercapacitor electrode materials with specific structures, high reversible capacity and excellent cycle stability. [0003] However, single nanomaterials have disadvantages such as small active area, poor conductivity, low cap...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/30H01G11/32H01G11/46H01G11/86
CPCY02E60/13H01G11/24H01G11/30H01G11/32H01G11/46H01G11/86
Inventor 张小俊付阳
Owner ANHUI NORMAL UNIV
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