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Iron-nickel binary oxide-foam nickel composite electrode material and preparation method thereof

A binary oxide, composite electrode technology, used in hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, etc., can solve the problems of limited application in a wide range, not very ideal, low conductivity, etc., and achieve excellent electrochemical performance. , the narrow band gap, the effect of large specific surface area

Inactive Publication Date: 2017-08-15
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

RuO 2 As the most ideal transition metal oxide electrode material, it has high theoretical capacitance and excellent cycle performance, but its low storage capacity and high price limit its wide range of commercial applications.
Therefore, people are working hard to find ...

Method used

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  • Iron-nickel binary oxide-foam nickel composite electrode material and preparation method thereof
  • Iron-nickel binary oxide-foam nickel composite electrode material and preparation method thereof
  • Iron-nickel binary oxide-foam nickel composite electrode material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] 1) Pretreatment of foamed nickel: Cut the foamed nickel into 2×4cm rectangular pieces, then place them in acetone, 1mol / L dilute hydrochloric acid solution and deionized water in sequence, and ultrasonically clean them for 15 minutes in an ultrasonic cleaner, and finally Dry overnight at 60°C in a drying oven.

[0034] 2) Preparation of nickel foam with iron ions and nickel ions on the surface: the nickel foam obtained in step 1) is put into the mixed aqueous solution of iron salt and nickel salt, wherein the concentration of iron ion is 11mmol / L, and the concentration of nickel ion is 33mmol / L, the solution volume is 30mL, and stirred for 20min, so that the surface of nickel foam is loaded with enough iron ions and nickel ions.

[0035] 3) Preparation of iron-nickel binary hydroxide-nickel foam composite electrode material: Weigh a certain amount of urea and add it to the beaker of step 2), the concentration of urea is 99mmol / L, stir and mix well, and move it i...

Embodiment 2

[0044] 1) Pretreatment of foamed nickel: Cut the foamed nickel into 2×4cm rectangular pieces, then place them in acetone, 1mol / L dilute hydrochloric acid solution and deionized water in sequence, and ultrasonically clean them for 15 minutes in an ultrasonic cleaner, and finally Dry overnight at 60°C in a drying oven.

[0045] 2) Preparation of nickel foam with iron ions and nickel ions on the surface: the nickel foam obtained in step 1) is put into the mixed aqueous solution of iron salt and nickel salt, wherein the concentration of iron ion is 15mmol / L, and the concentration of nickel ion is 30mmol / L, the solution volume is 30mL, and stirred for 20min, so that the surface of nickel foam is loaded with enough iron ions and nickel ions.

[0046] 3) Preparation of iron-nickel binary hydroxide-nickel foam composite electrode material: Weigh a certain amount of urea and add it to the beaker of step 2), the concentration of urea is 99mmol / L, stir and mix well, and move it i...

Embodiment 3

[0050] 1) Pretreatment of foamed nickel: Cut the foamed nickel into 2×4cm rectangular pieces, then place them in acetone, 1mol / L dilute hydrochloric acid solution and deionized water in sequence, and ultrasonically clean them for 15 minutes in an ultrasonic cleaner, and finally Dry overnight at 60°C in a drying oven.

[0051] 2) Preparation of nickel foam with iron ions and nickel ions on the surface: the nickel foam obtained in step 1) is put into the mixed aqueous solution of iron salt and nickel salt, wherein the concentration of iron ion is 22mmol / L, and the concentration of nickel ion is 22mmol / L, the solution volume is 30mL, and stirred for 20min, so that the surface of nickel foam is loaded with enough iron ions and nickel ions.

[0052] 3) Preparation of iron-nickel binary hydroxide-nickel foam composite electrode material: Weigh a certain amount of urea and add it to the beaker of step 2), the concentration of urea is 99mmol / L, stir and mix well, and move it i...

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Abstract

The invention relates to an iron-nickel binary oxide-foam nickel composite electrode material and a preparation method thereof. The composite electrode material is formed by foam nickel and an iron-nickel binary oxide nanosheet layer supported on the surface of the foam nickel fixedly. The preparation method comprises: (1) carrying out pretreatment of foam nickel; (2) preparing foam nickel having a surface loaded with iron ions and nickel ions; and (3) preparing an iron-nickel binary oxide-foam nickel composite electrode material; to be specific, weighing a certain amount of urea and adding the urea into a beaker in the step (2), carrying out stirring and mixing fully and uniformly, moving the mixture into a reaction still, carrying out hydrothermal reaction, carrying out cleaning and impurity removing, and then carrying out drying overnight. The prepared iron-nickel binary oxide-foam nickel composite electrode material serving as a super capacitor electrode material has high conductivity and high electric capacity.

Description

technical field [0001] The invention relates to the technical field of supercapacitor electrode preparation, in particular to an iron-nickel binary oxide-foam nickel composite electrode material and a preparation method thereof. Background technique [0002] With the increasing greenhouse effect and the rapid consumption of fuels such as oil, modern society urgently needs to carry out research on a new generation of renewable energy, including its production, storage and conversion technologies. The biggest obstacle in today's power supply is the limitation of wires. Although some people have started to study wireless power supply technology, it is not a good choice. However, there are still problems such as poor stability and low production capacity of wind energy and solar energy in power supply that have not been well resolved. Supercapacitors, also known as electrochemical capacitors, have the advantages of excellent power performance, perfect reversibility, long cycle ...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/46H01G11/86
CPCH01G11/30H01G11/46H01G11/86Y02E60/13
Inventor 张军穆天蕾余家国
Owner WUHAN UNIV OF TECH
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