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Nickel ferrite nano-particle electrode material, preparation method and use

A nanoparticle and electrode material technology, which is applied in the direction of nanotechnology, nanotechnology, hybrid capacitor electrodes, etc., can solve the problems of low safety, high Faraday pseudocapacitance, poor oxidation resistance, etc., and achieve stable physical and chemical properties. The effect of mass production and low migration resistance

Inactive Publication Date: 2017-07-21
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Carbon materials have many advantages such as long cycle life and low cost, but their specific capacitance is low and their oxidation resistance is poor
Conductive polymer electrode materials have good conductivity, but conductive polymer electrode materials have poor long-term stability, poor thermal stability, easy oxidation, and low safety
Due to the rapid and reversible redox reaction, metal oxide materials have high Faradaic pseudocapacitance, but there are still problems such as expensive noble metals and relatively low specific capacitance of transition metal oxides.

Method used

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  • Nickel ferrite nano-particle electrode material, preparation method and use
  • Nickel ferrite nano-particle electrode material, preparation method and use
  • Nickel ferrite nano-particle electrode material, preparation method and use

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Add 2mmol of nickel chloride, 1mmol of ferric nitrate, 6mmol of hexamethylenetetramine, and 5mmol of ammonium fluoride powder into 80ml of distilled water, put it in a 100ml beaker, put it into an ultrasonic instrument for 5 minutes, and stir it with a magnetic stirrer Let it mix well for 30 minutes. Pour the above solution into a 100ml polytetrafluoroethylene-lined reaction kettle, seal it, place it in an oven, control the temperature of the oven at 200°C, react for 10 hours, cool to room temperature, wash it several times, and dry it in vacuum to obtain iron Nickel nanoparticles. The obtained nickel ferrite nanoparticles are evenly mixed with acetylene black and polytetrafluoroethylene in a certain mass ratio of 8:1:1 to obtain a thick slurry, and then all the slurry is applied to the foamed nickel sheet, and finally heated at 150 degrees Dry for 3 hours and cool to room temperature to obtain nickel ferrite nanoparticle electrode material. figure 1 The positions and...

Embodiment 2

[0032] Add 2mmol of ferric nitrate, 1mmol of nickel acetate, 10mmol of hexamethylenetetramine, and 5mmol of ammonium fluoride powder into 80ml of distilled water, put it in a 100ml beaker, put it into an ultrasonic instrument for 5 minutes, and stir it with a magnetic stirrer for 30 minutes. minutes to mix well. Pour the above solution into a 100 ml polytetrafluoroethylene-lined reaction kettle, seal it, place it in an oven, control the temperature of the oven at 180°C, react for 12 hours, cool to room temperature, wash it several times, and dry it in vacuum to obtain Nickel ferrite nanoparticles. The obtained nickel ferrite nanoparticles are uniformly mixed with acetylene black and polytetrafluoroethylene in a certain mass ratio of 7:2:1 to obtain a thick slurry, and then all the slurry is applied to the foamed nickel sheet, and finally heated at 130 degrees Dry for 5 hours and cool to room temperature to obtain nickel ferrite nanoparticle electrode material.

Embodiment 3

[0034] Add 2mmol of nickel chloride, 2mmol of ferric nitrate, 3mmol of hexamethylenetetramine, and 10mmol of ammonium fluoride powder into 80ml of distilled water, put it in a 100ml beaker, put it into an ultrasonic instrument for 5 minutes, and stir it with a magnetic stirrer Let it mix well for 30 minutes. Pour the above solution into a 100ml polytetrafluoroethylene-lined reaction kettle, seal it, place it in an oven, control the temperature of the oven at 160°C, react for 6 hours, cool to room temperature, wash it several times, and dry it in vacuum to obtain iron Nickel nanoparticles. The obtained nickel ferrite nanoparticles are uniformly mixed with acetylene black and polytetrafluoroethylene in a certain mass ratio of 8:1:1 to obtain a thick slurry, and then all the slurry is applied to the foamed nickel sheet, and finally heated at 100 degrees Dry for 6 hours and cool to room temperature to obtain nickel ferrite nanoparticle electrode material.

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Abstract

The invention provides a nickel ferrite nano-particle electrode material, a preparation method and use. The preparation method comprises steps of step 1, adding powder of nickel salt, ferric salt, hexamine and ammonium fluoride into distilled water, carrying out ultrasound and using a magnetic stirrer to stir to allow the obtained substance to be mixed uniformly so as to obtain a precursor solution for standby; and step 2, pouring the precursor solution obtained in the step 1 into a reaction kettle with a polytetrafluoroethylene substrate for sealing, arranging the reaction kettle in a drying oven, controlling the temperature of the drying oven to between 140 and 200 DEG C, carrying out a hydrothermal reaction, cooling to the room temperature, and carrying out cleaning and vacuum drying to obtain the nickel ferrite nano-particle electrode material. According to the invention, the simple method for preparing the nickel ferrite nano-particle electrode material by use of enriched sources and low cost raw materials is provided; and the prepared electrode material can be further used as the electrode material of a super capacitor.

Description

technical field [0001] The invention belongs to the technical field of nanocomposite materials, and in particular relates to a novel nickel ferrite nanoparticle electrode material, a preparation method and an application. Background technique [0002] With the rapid development of economy and society, environmental degradation and energy depletion caused by fossil energy have attracted great attention from various countries, and new energy storage devices such as supercapacitors (ECs) have high charge and discharge rates, long cycle life, and wide operating temperature range. , no pollution to the environment and other advantages, it is recognized by scientists as the energy storage device with the most potential to alleviate the energy crisis. [0003] Electrode materials are an important part of supercapacitors and a key factor affecting the production cost and performance of supercapacitors. Supercapacitor electrode materials mainly include carbon materials, metal oxide ...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/24H01G11/86B82Y30/00
CPCY02E60/13H01G11/30B82Y30/00H01G11/24H01G11/86
Inventor 赵岩徐乐崔芬黄云鹏连加彪许晖徐远国李华明
Owner JIANGSU UNIV
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