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Preparation method and application of ferroferric oxide nanoparticles

A technology of ferroferric oxide and nanoparticles, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of complex synthesis process, expensive raw materials, uneven sample shape, etc., and achieve rich sources and low prices , the effect of uniform shape

Inactive Publication Date: 2018-09-04
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of complex synthesis process, expensive raw materials and uneven sample morphology in the prior art

Method used

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  • Preparation method and application of ferroferric oxide nanoparticles
  • Preparation method and application of ferroferric oxide nanoparticles
  • Preparation method and application of ferroferric oxide nanoparticles

Examples

Experimental program
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Effect test

Embodiment 1

[0027] First, weigh 25mL of glycerol and 35mL of deionized water and mix them evenly; then add 6 mmol of ferric chloride hexahydrate and 6 mmol of urea and stir evenly to obtain a mixed solution; then transfer the mixed solution to a high-temperature and high-pressure reactor in 200°C for 10 h; finally cooled to room temperature naturally, washed three times with deionized water, washed once with absolute ethanol, magnetically separated, and vacuum-dried to obtain black magnetic Fe 3 o 4 nanoparticles.

Embodiment 2

[0029] First, weigh 25mL of glycerol and 15mL of deionized water and mix them evenly; then add 6mmol of ferric chloride hexahydrate and 6mmol of urea and stir evenly to obtain a mixed solution; then transfer the mixed solution to a high-temperature and high-pressure reactor , at 200°C, reacted for 10 h; finally cooled naturally to room temperature, washed three times with deionized water, washed once with absolute ethanol, magnetically separated, and dried in vacuum to obtain black magnetic Fe 3 o 4 nanoparticles.

Embodiment 3

[0031] First, weigh 35mL of glycerol and 25mL of deionized water and mix them evenly; then add 6mmol of ferric chloride hexahydrate and 6mmol of urea and stir evenly to obtain a mixed solution; then transfer the mixed solution to a high-temperature and high-pressure reactor , at 200°C, reacted for 10 h; finally cooled naturally to room temperature, washed three times with deionized water, washed once with absolute ethanol, magnetically separated, and dried in vacuum to obtain black magnetic Fe 3 o 4 nanoparticles.

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Abstract

The invention belongs to the fields of a supercapacitor and a nanomaterial, and specifically discloses a preparation method of ferroferric oxide nanoparticles applied to the supercapacitor. The preparation method specifically comprises the steps of weighing glycerine and deionized water and performing uniform mixing, then adding ferric chloride hexahydrate and urea and performing stirring, next, transferring the mixed solution to a high-temperature high-pressure reaction kettle to be subjected to a hydrothermal reaction, performing natural cooling to the room temperature after the reaction iscompleted, performing magnetic separation or separation by a centrifuging machine and vacuum drying to obtain the ferroferric oxide nanomaterial. The ferroferric oxide nanoparticles disclosed in the invention have the advantages of small grain diameter and large specific surface area; and when the ferroferric oxide nanoparticles are applied to the supercapacitor, high discharge specific capacity and high cycle stability are achieved.

Description

technical field [0001] The invention belongs to the field of supercapacitors, and in particular relates to a preparation method of iron ferric oxide nanoparticles. Background technique [0002] Supercapacitors, also known as electrochemical capacitors, are a new type of energy storage device between traditional capacitors and batteries. Compared with traditional dielectric capacitors and rechargeable batteries, supercapacitors have the remarkable advantage of high energy density, power density Large, long cycle life and green environmental protection. According to the charge storage mechanism, electrochemical capacitors can be roughly divided into two types: electric double layer capacitors (EDLCs) and pseudocapacitors. The electric double layer capacitor mainly relies on applying a voltage across the electrode material, and stores the charge by electrostatically attracting electrons in the electrolyte. The electrode material is mainly carbon materials, including: carbon na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/46H01G11/86
CPCH01G11/46H01G11/86Y02E60/13
Inventor 朱脉勇陈齐吴述平申小娟张侃李松军
Owner JIANGSU UNIV
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