Preparation method of capacitor material having 3D hollow structure and application thereof

A hollow structure, capacitor technology, applied in hybrid capacitor electrodes, nanotechnology for materials and surface science, nanotechnology, etc., can solve problems such as complex process, achieve good repeatability, superior electrochemical properties, and preparation process Simple and Controllable Effects

Active Publication Date: 2018-10-23
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods have certain risks and hazards, and the process is relatively complicated.

Method used

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  • Preparation method of capacitor material having 3D hollow structure and application thereof
  • Preparation method of capacitor material having 3D hollow structure and application thereof
  • Preparation method of capacitor material having 3D hollow structure and application thereof

Examples

Experimental program
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Embodiment 1

[0020] In this embodiment, cobalt chloride, nickel chloride, ammonium fluoride, sodium sulfide, urea and silk are used as experimental raw materials, and the specific preparation process is as follows:

[0021] (1) Take 50ml of sodium carbonate solution with a mass fraction of 5% and place it in a 100ml beaker, immerse the silkworm cocoons in the solution, heat it to 100°C by means of oil bath heating and keep it warm for 30min, then use the obtained silk to remove Wash with deionized water several times, and dry at 60°C for 12 hours;

[0022] (2) Take by weighing reagent 1mmol nickel chloride (0.2377g), 2mmol cobalt chloride (0.4759g), 10mmol urea (0.6006g), 10mmol ammonium fluoride (0.3700g), be dissolved in the beaker of 50mL deionized water, In the process of adding the reagent, the solution needs to be stirred continuously until a clear pink solution is formed; then the solution and the silk obtained in step (1) are placed in a 100mL stainless steel autoclave lined with p...

Embodiment 2

[0026] Concrete preparation steps (1), (2), (3) of the present embodiment are the same as embodiment 1, and step (4) is:

[0027] (4) Put the 3D hollow structural material obtained in step (3) in a porcelain boat and place it in a tube furnace, heat it to 300°C in an air atmosphere and keep it warm for 2 hours to obtain the oxidized 3D hollow structural material, It is a capacitor material with a 3D hollow structure.

Embodiment 3

[0029]Concrete preparation steps (1), (2), (3) of the present embodiment are the same as embodiment 1, and step (4) is:

[0030] (4) Put the 3D hollow structural material obtained in step (3) in a porcelain boat and place it in a tube furnace, heat it to 500°C in an air atmosphere and keep it warm for 2 hours to obtain the oxidized 3D hollow structural material, It is a capacitor material with a 3D hollow structure.

[0031] Through the characterization of the scanning electron microscope, the thorny NiCo that grows on the surface of the silk is prepared in Example 1. 2 S 4 The nanowire structure remained intact and formed a hollow structure with a diameter of 8.23nm, and no "collapse" phenomenon was observed, such as figure 1 . And changing the oxidation and calcination treatment conditions, mainly the temperature, has a great impact on the material NiCo 2 S 4 The morphology and structure of the nanowires have a significant impact, such as figure 2 , at lower or higher...

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Abstract

The invention, which belongs to the technical field of energy material preparation, relates to a preparation method for growing a NiCo2S4 nanowire by using silk as a substrate to form a capacitor material. The specific preparation process comprises: growing a nickel-cobalt precursor on silk; carrying out hydrothermal vulcanization treatment on the obtained nickel-cobalt precursor to remove the silk and thus forming a hollow structure; and then carrying out oxidative calcination treatment to obtain a capacitor material having a 3D hollow structure. According to the invention, the spinous structure of the NiCo2S4 nanowire is kept well; a large specific surface area and more active sites are provided; the electron/ion in the electrolyte solution can be absorbed conveniently, so that the electrochemical performance of the material becomes excellent and stable. In addition, the hollow structure has the diameter of 8 to 9 nm and thus a convenient passage is provided for electron/ion transport, so that the reaction is carried out continuously and effectively. The prepared capacitor material having the excellent electrochemical performance and the outstanding cycle stability is a potentialmaterial and has broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of energy material preparation, and in particular relates to a method for growing NiCo based on silk as a substrate. 2 S 4 Preparation methods of nanowires as capacitor materials. Background technique [0002] Oil and other energy resources are becoming increasingly scarce and the exhaust emissions of internal combustion engines after burning oil are increasingly polluting the environment. People are studying new energy devices to replace internal combustion engines. At present, research and development of hybrid power, fuel cells, and chemical battery products and applications have been carried out, and certain results have been achieved. However, due to their inherent shortcomings such as short service life, poor temperature characteristics, environmental pollution by chemical batteries, complex systems, and high cost, there has been no good solution. [0003] Supercapacitor is a new type of energy stor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00H01G11/24H01G11/30Y02E60/13
Inventor 刘敬权黄卫国张爱堂
Owner QINGDAO UNIV
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