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Preparation method of high-performance supercapacitor heterostructure electrode material

A technology for supercapacitors and electrode materials, which is applied in the fields of hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, chemical instruments and methods, etc. stability and other issues, to achieve superior cycle stability, good rate performance, and improved electrochemical performance.

Inactive Publication Date: 2021-07-20
SHENYANG INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a preparation method of an electrode material with a heterogeneous structure for a high-performance supercapacitor, which solves the problems of inhomogeneous material morphology, inability to accurately control the synthesis method, mechanical stability and structural instability, etc.

Method used

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

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Embodiment 1

[0031] A method for preparing a high-performance supercapacitor heterostructure electrode material, the method comprising;

[0032] 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 for 12 hours;

[0033] 2) Dissolve 1 mmol of nickel nitrate, 2 mmol of cobalt nitrate, 0.3 ammonium fluoride, and 0.8 g of urea into 55 ml of water, and stir for 30 min; then transfer the above solution into a reaction kettle, and keep it warm at 120°C for 6 h; Naturally cool to room temperature, wash with absolute ethanol and deionized water three times, and dry the prepared sample at 60°C for 10 h;

[0034] 3) Dissolve 1 mmol of cobalt nitrate, 0.3 g of ammonium fluoride, and 0.6 g of urea into 50 ml of water, and stir for 25 min; then transfer the above solution into a reaction kettle and keep it at 110°C for 6 h; naturally cool ...

Embodiment 2

[0042] 1) Dissolve 1 mmol of nickel nitrate, 2 mmol of cobalt nitrate, 0.5 ammonium fluoride, and 1.0 g of urea into 55 ml of water and stir for 30 min; then transfer the above solution into a reaction kettle and keep it warm at 120°C for 6 h; Naturally cool to room temperature, wash with absolute ethanol and deionized water three times, and dry the prepared sample at 60°C for 10 h;

[0043] 2) Dissolve 1 mmol of cobalt nitrate, 0.5 g of ammonium fluoride, and 1.0 g of urea into 50 ml of water, and stir for 25 min; then transfer the above solution into a reaction kettle and keep it at 110°C for 6 h; 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;

[0044] 3) Dissolve 0.35 g of sodium sulfide in 55 ml of deionized water, stir magnetically for 20 min, then transfer the sample prepared in step 3) into this solution, transfer it to a reaction kettle, and keep it warm at 120 °C for 6 ...

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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, dissolving 1 mmol of nickel nitrate, 2 mmol of cobalt nitrate, 8-10 mmol of ammonium fluoride and 1-2 g of urea into 55 ml of water, and carrying out heat preservation at 120 DEG C for 6 hours; dissolving 1 mmol of cobalt nitrate, 8 to 10 mmol of ammonium fluoride and 0.5 to 1 g of urea into 50 ml of water; transferring the solution into a reaction kettle, and keeping the temperature at 110 DEG C for 6 hours; dissolving 0.35 g of sodium sulfide in 55 ml of deionized water, magnetically stirring for 20 min, preserving heat at 120 DEG C for 6 h, naturally cooling to room temperature, preserving heat of the prepared sample at 60 DEG C for 12 h, and drying 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 industrialized society, people's demand for energy is also increasing, which leads to the rapid consumption of fossil fuels and serious environmental pollution. It is imminent for people to develop and utilize clean and efficient renewable energy. Renewable energy such as solar energy, wind energy, and tidal energy has the advantages of abundant reserves and environmental friendliness. However, these renewable energy sources have the characteristics of unsustainable supply and strong dependence on the natural environment, which limits their application and development. Therefore, developing and researching fast, efficient, lo...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/30H01G11/26C01G51/00B82Y40/00B82Y30/00
CPCH01G11/86H01G11/30H01G11/26C01G51/40C01G51/30B82Y40/00B82Y30/00C01P2004/80C01P2004/24C01P2006/40Y02E60/13
Inventor 李昱材赵琰张东宋世巍王健柯昀洁丁艳波王晗朱显东李天文
Owner SHENYANG INST OF ENG
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