A preparation method of flexible nanoporous nickel/nickel oxide composite electrode sheet

A nanoporous nickel and composite electrode technology, applied in the field of new material technology and new energy, can solve the problem of poor mechanical properties of Ni-Zr precursor amorphous alloy thin strips, insufficient advantages in the application of flexible wearable electronic products, and reduced flexibility and other problems, to achieve the effect of short cycle time, low equipment cost and excellent flexibility

Active Publication Date: 2017-10-31
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Ni-Zr precursor amorphous alloy thin ribbon prepared by this patent has poor mechanical properties and low flexibility, and the flexibility is further reduced after dealloying corrosion, which has insufficient application advantages in the field of flexible wearable electronic products.

Method used

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  • A preparation method of flexible nanoporous nickel/nickel oxide composite electrode sheet
  • A preparation method of flexible nanoporous nickel/nickel oxide composite electrode sheet
  • A preparation method of flexible nanoporous nickel/nickel oxide composite electrode sheet

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Effect test

Embodiment 1

[0035] Select the alloy composition as Ni 40 Ti 60 , calculate its mass percent according to the atomic percent of element in the target alloy: Ni is 44.97%, Ti is 55.03%, takes by weighing the pure nickel (granular metal) 8.994g of purity 99.9wt% and the pure titanium of purity 99.9wt% ( Rod metal) 11.006g, mixed to obtain 20g of master alloy raw material. Then place the proportioned master alloy raw material in a vacuum electric arc melting furnace, and place 20 g of pure titanium with a purity of 99.9 wt% in the vacuum electric arc furnace independently without contacting the master alloy raw material, and melt it as an oxygen-scavenging material. The melting conditions are: the vacuum degree of the furnace chamber reaches 9.0×10 -4 Pa filled with argon to positive pressure; melting current 120 ~ 160A. Under the protection of argon, repeat the smelting of the master alloy 4 times, about 60 seconds each time, to ensure the uniformity of the alloy structure; after the smel...

Embodiment 2

[0044] Select the alloy composition as Ni 42 Ti 58 , calculate its mass percent according to the atomic percent of the element in the target alloy: Ni is 47.02%, Ti is 52.98%, takes by weighing the pure nickel (granular metal) 9.405g that purity is 99.9wt% and the pure titanium of 99.9%wt% ( Rod-shaped metal) 10.595 g were mixed to obtain 20 g of master alloy raw materials. Then place the proportioned master alloy raw material in a vacuum electric arc melting furnace, and place 20 g of pure titanium with a purity of 99.9 wt% in the vacuum electric arc furnace independently without contacting the master alloy raw material, and melt it as an oxygen-scavenging material. The melting conditions are: the vacuum degree of the furnace chamber reaches 9.0×10 -4 After Pa, rush into argon to positive pressure; the melting current is 120-160A. Under the protection of argon, the master alloy was repeatedly smelted 4 times, each time for about 60 seconds, to ensure the uniformity of the ...

Embodiment 3

[0051] Select the alloy composition as Ni 38 Ti 62 , calculate its mass percent according to the atomic percent of element in the target alloy: Ni is 42.90%, Ti is 57.10%, takes by weighing the pure nickel (granular metal) 8.580g that purity is 99.9wt% and the pure titanium of 99.9%wt% ( Rod-shaped metal) 11.420 g were mixed to obtain 20 g of master alloy raw materials. Then place the proportioned master alloy raw material in a vacuum electric arc melting furnace, and place 20 g of pure titanium with a purity of 99.9 wt% in the vacuum electric arc furnace independently without contacting the master alloy raw material, and melt it as an oxygen-scavenging material. The melting conditions are: the vacuum degree of the furnace chamber reaches 9.0×10 -4 After Pa, rush into argon to positive pressure; the melting current is 120-160A. Under the protection of argon, the master alloy was repeatedly smelted 4 times, each time for about 60 seconds, to ensure the uniformity of the allo...

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Abstract

The present invention is a kind of preparation method of flexible nano-porous nickel / nickel oxide composite electrode sheet, and the method comprises the following steps: the first step, prepare Ni-Ti precursor amorphous alloy strip, according to atomic percentage Ni:Ti=( 35+x): (65‑x), wherein, x=0~10, select high-purity Ni and Ti metals, and then smelt Ni‑Ti alloy ingots with electric arc melting furnaces; then Ni‑Ti alloy ingots Remove the superficial oxide skin, and use vacuum strip equipment to prepare Ni-Ti amorphous alloy thin strips to obtain Ni-Ti amorphous alloy thin strips with a thickness of 25-30 µm; in the second step, the Ni-Ti amorphous alloys obtained above are The strip is placed in an acidic corrosion solution at room temperature for free dealloying for 40-100 minutes, and then the obtained nanoporous thin strip is rinsed with deionized water to obtain a nanoporous nickel / nickel oxide composite electrode sheet. The composite electrode material prepared by the invention exhibits excellent flexibility and good electrochemical performance.

Description

technical field [0001] The invention belongs to the field of new material technology and new energy technology, and in particular relates to a preparation method of a nanoporous nickel / nickel oxide composite electrode material with good flexibility that can be used in flexible wearable electronic products. Background technique [0002] With the development of lightweight, portable, flexible and wearable electronic products and electric vehicles or hybrid vehicles, energy storage and conversion devices and systems with excellent performance have attracted worldwide attention. The mainstream applications of wearable devices include infotainment and social sharing, medical and health monitoring, military and industrial applications, etc. At present, wearable devices mostly exist in the form of portable accessories with some computing functions and can be connected to mobile phones and various terminals. At the same time, supercapacitors have outstanding advantages such as high ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/28H01G11/46
Inventor 秦春玲祝江赛王志峰胡庆丰赵维民
Owner HEBEI UNIV OF TECH
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