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A kind of nanoporous nickel/nickel oxide supercapacitor electrode material and preparation method thereof

A nanoporous nickel and supercapacitor technology, applied in hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, hybrid capacitor current collectors, etc., can solve the problem of poor electrochemical performance, difficulty in regulating nickel oxide, and no obvious crystals in nickel oxide structure and other issues, to achieve the effect of saving energy and labor, good combination and good dispersion

Active Publication Date: 2019-02-22
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process is simple and easy to operate, but the active material nano-nickel oxide of the electrode material is formed by coating the nano-porous nickel ligament on the surface, and its content is small, so the electrochemical performance is not outstanding; the nickel oxide obtained at the same time has no obvious crystal structure, so it is difficult to control the amount of nickel oxide

Method used

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  • A kind of nanoporous nickel/nickel oxide supercapacitor electrode material and preparation method thereof
  • A kind of nanoporous nickel/nickel oxide supercapacitor electrode material and preparation method thereof
  • A kind of nanoporous nickel/nickel oxide supercapacitor electrode material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The first step is to prepare the precursor alloy

[0043] According to target alloy Ni 45 (Ti 0.35 Zr 0.45 al 0.20 ) 55 The atomic percentage of each element in the formula is obtained by weighing 8.635g of pure Ni particles with a mass fraction of 99.9wt.%, 3.013g of pure Ti rods, 7.382g of pure Zr rods, and 0.970g of pure Al sheets to obtain 20g of master alloy raw materials, and then The mixed metal raw materials are placed in a vacuum electric arc furnace, and 20g of pure titanium with a purity of 99.9wt.% is independently placed in a vacuum electric arc furnace without contact with the master alloy raw material, and is smelted as a deoxidizing material; under the protection of argon, repeat Melt the master alloy 4 times, about 40 seconds each time, to ensure the uniformity of the alloy structure; after the smelting is completed, cool to room temperature with the furnace to obtain Ni 45 (Ti 0.35 Zr 0.45 al 0.20 ) 55 Alloy ingot (master alloy).

[0044] Rem...

Embodiment 2

[0056] The first step is to prepare the precursor alloy

[0057] According to target alloy Ni 42.5 (Ti 0.35 Zr 0.45 al 0.20 ) 57.5 Atomic percentage of each element in the formula, take by weighing 8.140g of pure Ni particles, 3.144g of pure Ti rods, 7.703g of pure Zr rods, and 1.103g of pure Al flakes with a mass fraction of 99.9wt.% to obtain 20g of the master alloy raw material, and then The mixed metal raw materials are placed in a vacuum electric arc furnace, and 20g of pure titanium with a purity of 99.9wt.% is independently placed in a vacuum electric arc furnace without contact with the master alloy raw material, and is smelted as a deoxidizing material; under the protection of argon, repeat Melt the master alloy 4 times, about 40 seconds each time, to ensure the uniformity of the alloy structure; after the smelting is completed, cool to room temperature with the furnace to obtain Ni 42.5 (Ti 0.35 Zr 0.45 al 0.20 ) 57.5 Alloy ingot (master alloy).

[0058] Re...

Embodiment 3

[0065] The first step is to prepare the precursor alloy

[0066] According to the Ni in the target alloy 40 (Ti 0.35 Zr 0.45 Al 0.20 ) 60 Atomic percentages of each element, weighed 7.647g of pure Ni pellets, 3.275g of pure Ti rods, 8.023g of pure Zr rods, and 1.055g of pure Al flakes with a mass fraction of 99.9wt.% were mixed to obtain 20g of master alloy raw materials, and then the mixed Good metal raw materials are placed in a vacuum electric arc furnace, and 20g of pure titanium with a purity of 99.9wt.% is independently placed in a vacuum electric arc furnace without contact with the master alloy raw material, and is used as a scavenging material for smelting; under the protection of argon, repeated smelting 4 master alloys, about 40 seconds each time, to ensure the uniformity of the alloy structure; after the smelting is completed, it is cooled to room temperature with the furnace to obtain Ni 40 (Ti 0.35 Zr 0.45 Al 0.20 ) 60 Alloy ingot (master alloy).

[006...

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Abstract

The invention relates to a nanometer porous nickel / nickel oxide supercapacitor electrode material and a preparation method thereof. The electrode material comprises a current collector and an active substance, wherein the current collector is a natural complex of nickel-based amorphous alloy and nanometer porous nickel, the nickel-based amorphous alloy is used as an intermediate core layer, nanometer porous nickel layers are arranged at two sides, rod-shaped nickel oxide is used as the active substance and is dispersed on a surface of the nanometer porous nickel, the rod-shaped nickel oxide is in a regular hexagonal prism shape, the rod length is 1-2 micrometers, the diameter is 0.1-0.3 micrometers, the constituent of Ni-Ti-Zr-Al nickel-based amorphous alloy is Ni<40+x>(Ti<0.35>Zr<0.45>Al<0.20>)<60-x>, and x is equal to 0-5. The rod-shaped oxide nickel is obtained by a method combining oxidation immersion and thermal processing, the usage of an organic reagent during the preparation process is prevented, the energy source is saved, the relatively complicated chemical means is omitted, the equipment complexity is reduced, the production period is obviously shortened, and production on a large scale is facilitated.

Description

Technical field: [0001] The invention belongs to the invention field of capacitor electrode materials, and in particular relates to a nanoporous nickel / nickel oxide supercapacitor electrode material and a preparation method thereof. Background technique: [0002] In recent years, due to the growth of population and the rapid development of the world economy, the problems of environmental pollution and energy shortage faced by human beings have become more and more serious. At the same time, due to the non-renewable fossil energy, it is imminent to develop a new energy storage device that can be used sustainably and is environmentally friendly. Supercapacitors have the advantages of high power density, short charging time, and long service life, so they are widely used in electric vehicles, military, mobile communication equipment and other fields, which has attracted extensive attention of scientific researchers. [0003] Supercapacitors, also known as electrochemical capac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/46H01G11/24H01G11/28H01G11/68H01G11/86
CPCY02E60/13
Inventor 秦春玲郑栋辉祝江赛朱墨王志峰余晖赵维民
Owner HEBEI UNIV OF TECH