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Preparation method of high-performance supercapacitor heterostructure electrode material

A technology of supercapacitors and heterogeneous structures, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problems of poor material cycle performance and unstable structure, achieve good rate performance, optimize electrode materials, and improve The effect of electrochemical performance

Pending Publication Date: 2022-04-15
SHENYANG INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a preparation method of a high-performance supercapacitor heterostructure electrode material, which solves the problems of poor material cycle performance and unstable structure.

Method used

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  • Preparation method of high-performance supercapacitor heterostructure electrode material
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  • Preparation method of high-performance supercapacitor heterostructure electrode material

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Embodiment 1

[0026] A method for preparing a high-performance heterostructure electrode material, the method comprising;

[0027] 1) Pre-treat the nickel foam, ultrasonication in deionized water for half an hour, then ultrasonic treatment with alcohol for half an hour, repeat five times, and finally put the foamed nickel into a vacuum drying oven to dry for 12 hours;

[0028] 2) Dissolve 1mmol of nickel nitrate, 2mmol of cobalt nitrate, 8mmol of ammonium fluoride, and 1g of urea into 60ml of water, and stir for 30min; then transfer the above solution into a reaction kettle, and keep it at 120°C for 8h; naturally cool to room temperature, and use Wash with absolute ethanol and deionized water for 3 times, and dry the prepared sample at 60° C. for 10 h to obtain a NiCo precursor.

[0029] 3) Dissolve 1mmol cobalt nitrate, 1mmol sodium molybdate, 10mmol ammonium fluoride, and 1.0g urea into 50ml water, and stir for 25min; Insulate at 160°C for 6h; naturally cool to room temperature, wash wit...

Embodiment 2

[0034] 1) Pre-treat the nickel foam, ultrasonication in deionized water for half an hour, then ultrasonic treatment with alcohol for half an hour, repeat five times, and finally put the foamed nickel into a vacuum drying oven to dry for 12 hours;

[0035] 2) Dissolve 2mmol of nickel nitrate, 4mmol of cobalt nitrate, 10mmol of ammonium fluoride, and 1.5g of urea into 80ml of water, and stir for 30 minutes; then transfer the above solution into a reaction kettle, and keep it warm at 120°C for 6 hours; naturally cool to room temperature , washed three times with absolute ethanol and deionized water, and dried the prepared sample at 60° C. for 10 h to obtain a NiCo precursor.

[0036] 3) Dissolve 1.5mmol cobalt nitrate, 1.5mmol sodium molybdate, 10mmol ammonium fluoride, and 1.5g urea into 60ml water, and stir for 30min; then transfer the above solution and the NiCo precursor obtained in step 2) into the reaction kettle together, And keep it warm at 160°C for 6h; naturally cool to...

Embodiment 3

[0039] 1) Pre-treat the nickel foam, ultrasonication in deionized water for half an hour, then ultrasonic treatment with alcohol for half an hour, repeat five times, and finally put the foamed nickel into a vacuum drying oven to dry for 12 hours;

[0040] 2) Dissolve 1.5mmol of nickel nitrate, 3mmol of cobalt nitrate, 6mmol of ammonium fluoride, and 2g of urea into 60 ml of water, and stir for 30 minutes; then transfer the above solution into a reaction kettle and keep it at 120°C for 8 hours; naturally cool to room temperature , washed three times with absolute ethanol and deionized water, and dried the prepared sample at 60°C for 10 h; the NiCo precursor was obtained

[0041] 3) Dissolve 1mmol cobalt nitrate, 1mmol sodium molybdate, 8mmol ammonium fluoride, and 0.85g urea into 60ml water, and stir for 30min; Insulate at 160°C for 6h; naturally cool to room temperature, wash with absolute ethanol and deionized water for 3 times, and dry the prepared sample at 80°C for 10h;

...

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Abstract

The invention belongs to the field of electrode material preparation, and mainly relates to a preparation method of a high-performance supercapacitor heterostructure electrode material. The method comprises the following steps: pretreating foamed nickel, and dissolving nickel nitrate, cobalt nitrate, ammonium fluoride and urea into water to prepare a precursor; dissolving cobalt nitrate, sodium molybdate, ammonium fluoride and urea into 50ml of water; and transferring the solution and the precursor into a reaction kettle to obtain the prepared electrode material. The problems that the structure of the material is unstable, the size is uniform, the synthesis method cannot be accurately controlled, the conductivity is poor, and the contact property with a current collector is poor are solved.

Description

technical field [0001] The invention belongs to the field of preparation of electrode materials, and specifically relates to a preparation method of electrode materials with a heterogeneous structure of a high-performance supercapacitor, which can be used in related fields such as capacitors. Background technique [0002] With the rapid development of society, traditional fossil energy such as coal, oil, etc. are consumed in large quantities, which increases the emission of harmful gases, leads to the thinning of the ozone layer, global warming, and the imbalance of the human ecosystem. Energy and environmental issues have become human survival and development. serious challenges that must be faced. The development of renewable green and clean energy and energy storage has become a "good recipe" to solve the problem of environmental pollution. As a renewable energy source, electric energy can be obtained through the transformation of green energy sources such as wind energy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/28H01G11/30
CPCY02E60/13
Inventor 王健宋世巍李昱材柯昀洁李兆滢白金禹姜铭坤赵琰张东林盛王晗郭瑞王东来姜河许鉴金家丞
Owner SHENYANG INST OF ENG
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