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Preparation method and application of a nickel cobalt oxide porous material

A porous material, nickel cobalt oxide technology, applied in nanotechnology for materials and surface science, chemical instruments and methods, nickel compounds, etc. The effect of large surface area and high energy storage

Active Publication Date: 2022-04-08
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Theoretically, Co 3 o 4 It has the highest specific capacitance among transition metal oxides, and is an excellent material for supercapacitor electrodes, and its preparation method is not complicated, but Co is more expensive and toxic than other transition metals.

Method used

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  • Preparation method and application of a nickel cobalt oxide porous material
  • Preparation method and application of a nickel cobalt oxide porous material
  • Preparation method and application of a nickel cobalt oxide porous material

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A preparation method of nickel cobaltate porous material, measure 50mL polyethylene glycol 400 in a beaker, weigh 5.8g of cobalt nitrate hexahydrate, 2.9g of nickel nitrate hexahydrate, 0.09g of sodium nitrate and add to the beaker, slowly stir to make it Disperse in polyethylene glycol 400, then weigh 10g of urea and add it to a beaker, use an ultrasonic cleaner to perform ultrasonication for 1 hour, then put the resulting solution in an oil bath, heat to 100°C, and stir at a constant temperature for 2 hours. The stirring speed is 300r / min; after the reaction, take the solution out and cool it to room temperature, transfer it to a square crucible, place it in a muffle furnace, and heat it to 300°C for 2 hours at a constant temperature under the condition of being in contact with air, then heat it to 400°C ℃ constant temperature treatment for 6 hours, the heating rate is 2-3 ℃ per minute, after it is cooled to obtain a black solid, which is ground with a grinding bowl to...

Embodiment 2

[0039] A preparation method of nickel cobaltate porous material, measure 45mL polyethylene glycol 400 in a beaker, weigh 5.8g of cobalt nitrate hexahydrate, 2.9g of nickel nitrate hexahydrate, 0.1g of sodium nitrate and add to the beaker, slowly stir to make it Disperse in polyethylene glycol 400, then weigh 15g of urea and add it to a beaker, use an ultrasonic cleaner to perform ultrasonication for 1 hour, then put the resulting solution in an oil bath and heat it to 100°C, and react with magnetic stirring for 2 hours at a stirring speed of 300r / min: After the reaction is over, take the solution out and cool it to room temperature, transfer it to a square crucible, place it in a muffle furnace, and heat it to 300°C for 2 hours at a constant temperature under the condition of being in contact with air, then heat it to 400°C Constant temperature treatment was carried out for 6 hours, the heating rate was 2-3°C per minute, and a black solid was obtained after cooling, which was ...

Embodiment 3

[0041] A preparation method of nickel cobaltate porous material, measure 40mL polyethylene glycol 400 in a beaker, weigh 5.8g of cobalt nitrate hexahydrate, 2.9g of nickel nitrate hexahydrate, 0.1g of sodium nitrate and add to the beaker, slowly stir to make it Disperse in polyethylene glycol 400, then weigh 15g of urea and add it to a beaker, use an ultrasonic cleaner to perform ultrasonication for 1 hour, then put the resulting solution in an oil bath and heat it to 100°C, and react with magnetic stirring for 2 hours at a stirring speed of 330r / min: After the reaction is over, take the solution out and cool it to room temperature, transfer it to a square crucible, place it in a muffle furnace, and heat it to 400°C for 6 hours at a constant temperature under the condition of being in contact with air, with a heating rate of 2-3 °C per minute, wait for it to cool down to obtain a black solid, and grind it with a grinding bowl to finally obtain a nickel cobalt oxide porous mate...

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Abstract

The invention relates to a preparation method of a high-performance nickel cobaltate nanoporous material, which belongs to the field of electrode materials and electrochemistry, and is used for preparing electrode materials for supercapacitors. The invention provides a method for preparing a nickel cobaltate nanoporous material, the preparation method comprising the following steps: adding a compound containing cobalt ions, a compound containing nickel ions, and a compound containing sodium ions into an organic solvent, adding a precipitating agent, Obtain a mixed solution; ultrasonically treat the obtained mixed solution, and then heat; cool the heated mixed solution, and then roast to generate a uniform nickel cobaltate nanoporous material, which can be used as an electrode material for a supercapacitor to effectively increase the supercapacitor The storage capacity of the capacitor.

Description

technical field [0001] The invention belongs to the field of electrode materials and electrochemistry, and relates to a negative electrode material for a lithium ion battery, in particular to a preparation method and application of a nickel cobalt oxide porous material. Background technique [0002] my country began to develop supercapacitors in the 1980s, and included them in national research projects. Supercapacitors not only have the two advantages of high power density and high energy density, but also have the advantages of fast charging speed, long cycle life, rich electrode materials and environmental protection. As a new type of energy storage component, supercapacitors have amazing product value and huge market potential in transportation tools (especially electric or hybrid vehicles and special transportation vehicles), electricity, computers, communications, military, etc. Although my country's supercapacitor industry level has not yet reached the forefront of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G53/00B82Y30/00B82Y40/00H01G11/24H01G11/46H01M4/525H01M10/0525
CPCC01G53/00H01G11/46H01G11/24H01M4/525H01M10/0525B82Y30/00B82Y40/00C01P2004/03C01P2006/40C01P2004/64Y02E60/13Y02E60/10
Inventor 王忆李准董张鲁
Owner WUYI UNIV
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