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A kind of preparation method of nickel ferrite microsphere supercapacitor electrode material

A technology for supercapacitors and electrode materials, which is applied in the field of nanomaterial preparation technology and electrochemistry, can solve the problems of increased synthesis costs, etc., and achieve the effects of excellent structural stability, good development prospects, and good conductivity

Active Publication Date: 2021-11-02
上海橙氧科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, micro-nano materials with controllable morphology can be synthesized by using the hydrothermal method.
Designing materials with special structures such as hollow, core-shell, and rough surfaces often relies on subsequent high-temperature heat treatment, resulting in a significant increase in synthesis costs

Method used

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  • A kind of preparation method of nickel ferrite microsphere supercapacitor electrode material
  • A kind of preparation method of nickel ferrite microsphere supercapacitor electrode material
  • A kind of preparation method of nickel ferrite microsphere supercapacitor electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) At room temperature, measure 40mL deionized water and pour it into a beaker, weigh 0.0727g Ni(NO 3 ) 2 ·6H 2 O, 0.2020g Fe(NO 3 ) 3 9H 2 Add O into deionized water, stir for 10-20min to dissolve completely, so that Ni(NO 3 ) 2 ·6H 2 The concentration of O is 6.25mmol / L, Fe(NO 3 ) 3 9H 2 The concentration of O is 12.5mmol / L.

[0032] (2) Weigh 2.1622g of urea and 0.6667g of ammonium fluoride and mix them into the homogeneous reaction solution obtained in step (1), and keep stirring for 30min to form a clear solution so that the concentration of urea is 0.9mol / L. The concentration of ammonium was 0.45mol / L, and then transferred to the reaction kettle, placed in the middle of a constant temperature oven and kept at 180°C for 6 hours.

[0033] (3) Naturally cool to room temperature after the reaction to obtain the reaction product; filter the obtained reaction product to obtain a precipitate, wash the precipitate with deionized water for 3 to 5 times, wash wi...

Embodiment 2

[0038] (1) At room temperature, measure 40mL deionized water and pour it into a beaker, weigh 0.1454g Ni(NO 3 ) 2 ·6H 2 O, 0.4040g Fe(NO 3 ) 3 9H 2 O was added to deionized water and stirred for 10-20 minutes to completely dissolve Ni(NO 3 ) 2 ·6H 2 The concentration of O is 12.5mmol / L, Fe(NO 3 ) 3 9H 2 The concentration of O is 25mmol / L.

[0039] (2) Weigh 2.1622g of urea and 0.6667g of ammonium fluoride and mix them into the homogeneous reaction solution obtained in step (1), and keep stirring for 30min to form a clear solution so that the concentration of urea is 0.9mol / L. The concentration of ammonium was 0.45mol / L, and then transferred to the reaction kettle, placed in the middle of a constant temperature oven and kept at 180°C for 6 hours.

[0040] (3) Naturally cool to room temperature after the reaction to obtain the reaction product; filter the obtained reaction product to obtain a precipitate, wash the precipitate with deionized water for 3 to 5 times, was...

Embodiment 3

[0043] (1) At room temperature, measure 40mL deionized water and pour it into a beaker, weigh 0.2908g Ni(NO 3 ) 2 ·6H 2 O, 0.8079g Fe(NO 3 ) 3 9H 2 O was added to deionized water and stirred for 10-20 minutes to completely dissolve Ni(NO 3 ) 2 ·6H 2 The concentration of O is 25mmol / L, Fe(NO 3 ) 3 9H 2 The concentration of O is 50mmol / L.

[0044] (2) Weigh 2.1622g of urea and 0.6667g of ammonium fluoride and mix them into the homogeneous reaction solution obtained in step (1), and keep stirring for 30min to form a clear solution so that the concentration of urea is 0.9mol / L. The concentration of ammonium is 0.45mol / L and then transferred to the reactor, placed in the middle of a constant temperature oven and kept at 180°C for 6 hours.

[0045] (3) Naturally cool to room temperature after the reaction to obtain the reaction product; filter the obtained reaction product to obtain a precipitate, wash the precipitate with deionized water for 3 to 5 times, wash with ethan...

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Abstract

The invention relates to a preparation method of a nickel ferrite microsphere supercapacitor electrode material; weighing nickel salt and iron salt are added to deionized water to dissolve them; mixing urea and ammonium fluoride into the solvent to keep the nickel salt , iron salt, urea, and ammonium fluoride in a molar ratio of 1:2:18~36:9~24, keep stirring to form a clear solution, then transfer it to a reaction kettle, and place it in an oven for constant temperature reaction; hydrothermal After the process is over, naturally cool to room temperature to obtain the reaction product; after suction filtration, precipitation, washing and drying, the final hollow NiFe with a diameter of 2-3 μm is obtained. 2 o 4 Microspheres. NiFe 2 o 4 The microsphere material is made into an electrode, and has a mass specific capacitance of 204.3F / g at a current density of 1A / g. This method is simple and easy, green and environmentally friendly, and does not require subsequent heat treatment to obtain NiFe without impurities 2 o 4 The electrode material reduces the energy consumption process and is easy for industrial production.

Description

technical field [0001] The invention relates to the fields of nanomaterial preparation technology and electrochemical technology, especially the preparation of supercapacitor electrode materials, in particular to double metal oxide nickel ferrite (NiFe 2 o 4 ) preparation method and its application in energy storage devices such as supercapacitors. Background technique [0002] With the rapid development of global industrial technology, energy depletion and environmental pollution have become the primary problems facing mankind. It is particularly important to develop clean energy such as hydrogen energy, wind energy, and solar energy that can replace traditional fossil energy. The establishment of a new energy system is inseparable from energy and storage technologies. Supercapacitor is a new type of energy storage device between traditional physical capacitors and batteries. It has the advantages of high specific power, fast charging and discharging speed, long service l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/46H01G11/24H01G11/86C01G53/00
CPCB82Y30/00B82Y40/00C01G53/00C01P2002/72C01P2004/04C01P2004/32C01P2004/61C01P2004/64H01G11/24H01G11/46H01G11/86Y02E60/13
Inventor 张磊李超殷少坤王威唐宁米南阳贾焜闫宁
Owner 上海橙氧科技有限公司