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Method for preparing nickel-cobalt double-metal hydroxide, graphene and foamed nickel composite material through alkali-free agent

A composite material and hydroxide technology, applied in the field of composite materials, can solve the problems of wide production of unsuitable materials, waste of industrial resources, unfriendly environment, etc., and achieve the effects of excellent electrochemical performance, energy saving and environmental pollution avoidance.

Active Publication Date: 2021-07-30
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the traditional process, the in-situ growth of double metal hydroxide on the substrate requires the use of a large amount of alkali or organic solvent, which not only wastes a lot of industrial resources, but also is not friendly to the environment, and is not suitable for the development of materials. widely produced

Method used

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  • Method for preparing nickel-cobalt double-metal hydroxide, graphene and foamed nickel composite material through alkali-free agent
  • Method for preparing nickel-cobalt double-metal hydroxide, graphene and foamed nickel composite material through alkali-free agent
  • Method for preparing nickel-cobalt double-metal hydroxide, graphene and foamed nickel composite material through alkali-free agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The foam nickel was washed with acetone, anhydrous ethanol, deionized water, and then washed with nitrogen. The foam is placed in the quartz tube and then extracts the quartz tube to 10 Pa to fill in the normal pressure with argon with a vacuum pump.

[0043] The quartz tube was heated to 800 ° C from the heating rate of 15 ° C / min, and the flow rate of argon and hydrogen during this process was 100 sccm, 30 sccm, and the temperature was annealed after 1000 ° C, and the argon was closed, and the argon was introduced and introduced into 10 SCCM. Methane is carbon source, which is 10 min, then closing methane, under mixed gas of argon (100 sccm) and hydrogen (30 sccm), gave graphene / foam nickel.

[0044] 1 mole of hexahydrate and 1 mole of nickel nickel nickel nickel were dissolved in 35 ml of deionized water, stirred to the mixture completely dissolved, and then plated graphene / foam nickel into the solution for 12 hours; graphene / foam Nickel is transferred to a solut...

Embodiment 2

[0053] The foam nickel was washed with acetone, anhydrous ethanol, deionized water, and then washed with nitrogen. The foam is placed in the quartz tube and then extracts the quartz tube to 10 Pa to fill in the normal pressure with argon with a vacuum pump.

[0054] The quartz tube was heated to 800 ° C from the heating rate of 15 ° C / min, and the flow rate of argon and hydrogen during this process was 100 sccm, 30 sccm, and the temperature was annealed after 1000 ° C, and the argon was closed, and the argon was introduced and introduced into 10 SCCM. Methane is carbon source, which is 10 min, then closing methane, under mixed gas of argon (100 sccm) and hydrogen (30 sccm), gave graphene / foam nickel.

[0055] 1 mole of hexahydrate and 1 mole of nickel nickel nickel nickel were dissolved in 35 ml of deionized water, stirred to the mixture completely dissolved, and then plated graphene / foam nickel into the solution for 12 hours; graphene / foam The nickel is transferred to a s...

Embodiment 3

[0057] The foam nickel was washed with acetone, anhydrous ethanol, deionized water, and then washed with nitrogen. The foam is placed in the quartz tube and then extracts the quartz tube to 10 Pa to fill in the normal pressure with argon with a vacuum pump.

[0058] The quartz tube was heated to 800 ° C from the heating rate of 15 ° C / min, and the flow rate of argon and hydrogen during this process was 100 sccm, 30 sccm, and the temperature was annealed after 1000 ° C, and the argon was closed, and the argon was introduced and introduced into 10 SCCM. Methane is carbon source, which is 10 min, then closing methane, under mixed gas of argon (100 sccm) and hydrogen (30 sccm), gave graphene / foam nickel.

[0059] 1 mole of hexahydrate and 1 mole of nickel nickel nickel nickel were dissolved in 35 ml of deionized water, stirred to the mixture completely dissolved, and then plated graphene / foam nickel into the solution for 12 hours; graphene / foam The nickel is transferred to a s...

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Abstract

The invention relates to a method for preparing a nickel-cobalt double-metal hydroxide, graphene and foamed nickel composite material without an alkali agent, and belongs to the technical field of composites. The method includes the steps: rapidly growing graphene on the surface of foamed nickel through a chemical vapor deposition (CVD) method, growing double-metal hydroxide hydrothermally with graphene / foamed nickel as a substrate, and obtaining the nickel-cobalt double-metal hydroxide / graphene / foamed nickel composite material; adding no alkali agent in the hydrothermal synthesis process; cleaning and drying foamed nickel; growing graphene on the surface of the foamed nickel at a certain temperature and atmosphere; dissolving a certain mass of nickel nitrate hexahydrate and cobalt nitrate hexahydrate in water to form a transparent solution; putting graphene / foamed nickel into the solution for infiltration; putting the solution and the infiltrated graphene / foamed nickel into a hydrothermal reaction kettle; taking out the reacted graphene / foamed nickel, and performing cleaning and drying in vacuum. The nickel-cobalt bimetal hydroxide / graphene / foamed nickel composite electrode material prepared by the process has certain application prospects in the fields of energy sources, electro-catalysis and the like.

Description

Technical field [0001] The present invention belongs to the technical field of composite materials, and more particularly to a method of preparing nickel-cobalt bimetallic hydroxide @ graphene @ foamed nickel composites. Background technique [0002] With the development of society, energy consumption and environmental protection problems are increasing, and therefore, environmentally efficient energy storage devices have received more and more scientists. [0003] The supercapacitor is based on high reliability, fast charge and discharge speed, and has a small environmental impact on environmental impact, and plays an important role in solving social energy issues. [0004] Graphene, as a carbon atom to SP 2 The hybrid formation of the smear structure has a two-dimensional nanomaterial, which has ultra-high mechanical strength, conductivity, and ultra-high theoretical specific surface area, and can act as a carrier of other materials. [0005] Through chemical vapor deposition (...

Claims

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Application Information

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IPC IPC(8): H01G11/32H01G11/86
CPCH01G11/30H01G11/86H01G11/36H01G11/24
Inventor 郭新立张铭李锐彭正彬刘园园张伟杰王艺璇
Owner SOUTHEAST UNIV
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