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A method and application of synthesizing nickel-cobalt-iron oxide three-dimensional vertical nanosheet structure electrode material

An electrode material, the technology of nickel-cobalt-iron, which is applied in the field of synthesizing nickel-cobalt-iron oxide three-dimensional vertical nanosheet structure electrode materials, can solve the problems of poor conductivity, large charge transfer resistance, and small specific capacitance value, and reduce the internal Effect of resistance, high area energy density, and increased load capacity

Active Publication Date: 2021-09-24
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of the existing metal oxide electrode materials, such as large charge transfer resistance, poor conductivity, and small specific capacitance, which seriously limit its application, and provide a three-dimensional synthetic nickel-cobalt-iron oxide Method and application of nanosheet structure electrode material

Method used

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  • A method and application of synthesizing nickel-cobalt-iron oxide three-dimensional vertical nanosheet structure electrode material
  • A method and application of synthesizing nickel-cobalt-iron oxide three-dimensional vertical nanosheet structure electrode material
  • A method and application of synthesizing nickel-cobalt-iron oxide three-dimensional vertical nanosheet structure electrode material

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Embodiment 1

[0036] Embodiment 1: A kind of method and application of synthesizing nickel-cobalt-iron oxide three-dimensional vertical nano-sheet electrode material is completed according to the following steps:

[0037] (1) Pretreatment of nickel foam:

[0038] Immerse foamed nickel with a width of 20mm, a length of 30mm, a thickness of 1mm, and a pore size of 400μm in dilute hydrochloric acid with a concentration of 2mol / L for 20min. Nickel foam with impurities;

[0039] (2) Configure nickel-cobalt-iron salt solution:

[0040] Dissolve 2mmol nickel nitrate hexahydrate, 2mmol cobalt nitrate hexahydrate, 1mmol ferric nitrate nonahydrate and 0.1g urea in a mixed solution containing 5ml ethanol, 10ml ethylene glycol, and 15ml deionized water, stir on an electromagnetic stirrer for 17min, and configure Nickel cobalt iron salt solution;

[0041] (3) Solvothermal reaction

[0042] Pour the nickel-cobalt-iron salt solution into the reactor, then insert the pretreated nickel foam vertically i...

Embodiment 2

[0045] Embodiment 2: A method and application of synthesizing nickel-cobalt-iron oxide three-dimensional vertical nano-sheet electrode material is completed according to the following steps:

[0046] (1) Pretreatment of nickel foam:

[0047] Immerse foamed nickel with a width of 20mm, a length of 30mm, a thickness of 1mm, and a pore size of 400μm in dilute hydrochloric acid with a concentration of 2mol / L for 20min. Nickel foam with impurities;

[0048] (2) configure nickel cobalt iron salt solution:

[0049] Dissolve 2mmol nickel nitrate hexahydrate, 2mmol cobalt nitrate hexahydrate, 1mmol ferric nitrate nonahydrate and 0.1g urea in a mixed solution containing 5ml ethanol, 10ml ethylene glycol, and 15ml deionized water, stir on an electromagnetic stirrer for 17min, and configure Nickel cobalt iron salt solution;

[0050] (3) Solvothermal reaction

[0051] Pour the nickel-cobalt-iron salt solution into the reactor, then insert the pretreated nickel foam vertically into the ...

Embodiment 3

[0054] Embodiment 3: A kind of method and application of synthesizing nickel-cobalt-iron oxide three-dimensional vertical nanosheet electrode material is to be completed according to the following steps:

[0055] (1) Pretreatment of nickel foam:

[0056] Immerse foamed nickel with a width of 20mm, a length of 30mm, a thickness of 1mm, and a pore size of 400μm in dilute hydrochloric acid with a concentration of 2mol / L for 20min. Nickel foam with impurities;

[0057] (2) Configure nickel-cobalt-iron salt solution:

[0058] Dissolve 5 / 3mmol nickel nitrate hexahydrate, 5 / 3mmol cobalt nitrate hexahydrate, 5 / 3mmol ferric nitrate nonahydrate and 0.1g urea in a mixed solution containing 5ml ethanol, 10ml ethylene glycol, and 15ml deionized water, and electromagnetically stir Stir on the mixer for 17min, and configure the nickel-cobalt-iron salt solution;

[0059] (3) Solvothermal reaction

[0060] Pour the nickel-cobalt-iron salt solution into the reactor, then insert the pretreated...

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Abstract

A method for synthesizing a nickel-cobalt-iron oxide three-dimensional vertical nanosheet structure electrode material and its application belong to the field of supercapacitor energy storage. The method of the present invention is to dissolve nickel salt, cobalt salt and iron salt in the mixed solution of ethanol, ethylene glycol and water and stir evenly, then immerse the treated foamed nickel in the above solution, react with solvent heat for a period of time, cover the After the foamed nickel with the reaction product is taken out and dried, the electrode material with nickel-cobalt-iron oxide three-dimensional vertical nanosheet structure can be obtained. This method directly grows the electrode material on the nickel foam without the use of binder, which increases the conductivity and mechanical stability. At the same time, the combination of nickel, cobalt and iron can improve the structural stability, avoid the occurrence of agglomeration and increase the surface area while synergistic effect occurs. The method has the advantages of simple operation, safety and environmental protection, strong controllability, cheap and easy-to-obtain raw materials, and is suitable for large-scale production and industrial application.

Description

technical field [0001] The invention belongs to the technical field of preparation of energy storage materials, and in particular relates to a method and application for synthesizing a nickel-cobalt-iron oxide three-dimensional vertical nanosheet structure electrode material. Background technique [0002] Batteries and capacitors are common energy storage devices. The former is a device that converts chemical energy into electrical energy through a chemical reaction of active materials. It has a high energy density, but the power density of the battery is limited; the capacitor absorbs the stored charge in Energy storage is carried out on the plates on both sides, with high power density, but less energy stored. Supercapacitors, also known as electrochemical capacitors, are energy storage devices between traditional capacitors and secondary batteries. Compared with batteries, supercapacitors have faster charge and discharge rates and higher power density; compared with trad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/46H01G11/86
CPCH01G11/24H01G11/30H01G11/46H01G11/86Y02E60/13
Inventor 范爱玲谢登奎曹小强庞伟
Owner BEIJING UNIV OF TECH