Preparation method of supercapacitor electrode material multilayer petal-shaped nickel molybdate

A technology for supercapacitors and electrode materials, applied in the fields of hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, nanotechnology for materials and surface science, etc. problems, to achieve the effect of reducing internal resistance, good electrochemical stability, great research value and application prospects

Inactive Publication Date: 2018-05-01
XINYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, most supercapacitor electrode materials have large resistance, poor power storage function, and short service life

Method used

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  • Preparation method of supercapacitor electrode material multilayer petal-shaped nickel molybdate
  • Preparation method of supercapacitor electrode material multilayer petal-shaped nickel molybdate
  • Preparation method of supercapacitor electrode material multilayer petal-shaped nickel molybdate

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preparation example Construction

[0029] A preparation method of supercapacitor electrode material multilayer petal-shaped nickel molybdate, comprising the following steps:

[0030] (1) Prepare the precursor solution with nickel nitrate hexahydrate, sodium molybdate dihydrate, deionized water and 15 ml 95% ethanol;

[0031] (2) Stir the solution obtained in step (1) with a glass rod for 15-20 minutes, then use an ultrasonic cleaner to accelerate the dissolution for 30-35 minutes, then transfer it to the inner tank of the high-pressure reactor, seal it, and put it into the electric heating constant temperature Carry out hydrothermal synthesis reaction in blast drying box;

[0032] (3) Take out the solution that has completely reacted in step (2) and cool it down to room temperature naturally, then use distilled water and absolute ethanol to perform centrifugal cleaning in a high-speed centrifuge at a certain speed;

[0033] (4) put the washed yellow-green substance into a vacuum drying oven to dry;

[0034] (...

Embodiment 1

[0043] Accurately weigh 0.2908 g (1 mmol) of nickel nitrate hexahydrate and 0.2419 g (1 mmol) of sodium molybdate dihydrate, dissolve them in 15 ml of deionized water, add 15 ml of 95% ethanol, and stir with a glass rod 15-20 minutes, and then use an ultrasonic cleaner to accelerate the dissolution for 30-35 minutes, then transfer the mixed solution to the polytetrafluoroethylene liner of the high-pressure reactor, seal it, and put it into an electric heating constant temperature blast drying box Set the temperature at 160 °C and the time for 6 h for hydration thermal reaction; take out the completely reacted solution and cool it down to room temperature naturally, then use distilled water and absolute ethanol to set the speed at 7000 r / min in a high-speed centrifuge for 5 h Min is carried out centrifugal cleaning, first washes 3-5 times with deionized water, then washes 3-5 times with ethanol; The yellow-green material that washs clean is put into vacuum drying box and is drie...

Embodiment 2

[0045] Accurately weigh 0.2908 g (1 mmol) of nickel nitrate hexahydrate and 0.2419 g (1 mmol) of sodium molybdate dihydrate, dissolve them in 15 ml of deionized water, add 15 ml of 95% ethanol, and stir with a glass rod 15-20 minutes, then ultrasonically accelerate the dissolution for 30-35 minutes with an ultrasonic cleaner; transfer the mixed solution to the polytetrafluoroethylene liner of the high-pressure reactor, seal it well, and put it into an electric heating constant temperature blast drying box Set the temperature at 160 °C and the time for 6 h for hydration thermal reaction; take out the completely reacted solution and cool it down to room temperature naturally, then use distilled water and absolute ethanol to set the speed at 7000 r / min in a high-speed centrifuge for 5 h Min is carried out centrifugal cleaning, first washes 3-5 times with deionized water, then washes 3-5 times with ethanol; The yellow-green material that washs clean is put into vacuum drying box an...

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Abstract

The present invention discloses a preparation method of supercapacitor electrode material multilayer petal-shaped nickel molybdate. The preparation method comprises the following steps of: (1) preparing precursor solution by employing nickel nitrate hexahydrate, sodium molybdate dihydrate, deionized water and 15ml of 95% ethanol; (2) stirring the solution by employing a glass bar for 15-20 minutes, employing a supersonic cleaner to perform ultrasonic acceleration dissolution for 30-35 minutes, then transferring the solution into a high-pressure reaction vessel inner container, sealing the high-pressure reaction vessel inner container, and putting the high-pressure reaction vessel inner container into a constant temperature air dry oven for hydro-thermal synthesis reaction; (3) taking out the completely reacted solution to perform natural cooling to a room temperature, and performing centrifugal cleaning of the solution by rotating distilled water and absolute ethyl alcohol at a certainrotating speed in a high-speed centrifuge; (4) putting cleaned yellow-green substances into a vacuum drying box for cleaning; and (5) performing calcining of products in a tube furnace argon atmosphere in a certain heating rate and a certain temperature, and obtaining target products. The electrode materials are relatively good in electrochemical stability, has multi-layer structure capable of reducing internal resistance, is rapid in charge, is energy saving and environmentally friendly, and has a great research value and application prospect.

Description

technical field [0001] The invention relates to the technical field of synthesis of supercapacitor electrode materials, in particular to a preparation method of multilayer petal-shaped nickel molybdate as a supercapacitor electrode material. Background technique [0002] With the rapid increase of the population on the earth, the aggravation of the greenhouse effect has caused great changes in the climate, and the petrochemical resources are gradually exhausted. Both the environment and energy are facing serious challenges. With the rapid growth of the market for portable electronic devices and hybrid electric vehicles, the demand for high-power energy resources has increased dramatically. Therefore, in-depth research on the basic theory and practical application of capacitors has important academic value and application prospects, which has important practical significance for solving energy problems. [0003] Supercapacitors are also known as electrochemical capacitors be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/46H01G11/26H01G11/86B82Y30/00
CPCY02E60/13H01G11/46B82Y30/00H01G11/26H01G11/86
Inventor 方林霞王凡李雯邱艳兰梦迪吴云云
Owner XINYANG NORMAL UNIVERSITY
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