Self-supporting type nano-porous nickel/nickel oxide combined electrode plate and preparation method thereof

A nanoporous nickel and composite electrode technology, which is applied in hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, nanotechnology, etc., can solve the problems of easy falling off of electroactive materials, poor dispersion of nickel oxide, and preparation of electrode sheets separately.

Active Publication Date: 2015-01-07
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It not only overcomes the shortcomings of the current self-collecting electrode materials such as complex preparation process and long time consumption, but also overcomes the shortcomings of the current preparation method of nickel oxide electrode materials, such as poor dispersion of nickel oxide, poor conductivity, and the need to prepar

Method used

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  • Self-supporting type nano-porous nickel/nickel oxide combined electrode plate and preparation method thereof
  • Self-supporting type nano-porous nickel/nickel oxide combined electrode plate and preparation method thereof
  • Self-supporting type nano-porous nickel/nickel oxide combined electrode plate and preparation method thereof

Examples

Experimental program
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Effect test

Example Embodiment

[0037] Example one:

[0038] The first step is the selection of alloy composition and alloy preparation

[0039] According to the alloy composition point is Ni 45 (Ti 0.35 Zr 0.45 Al 0.2 ) 55 Select metal materials, the raw materials are 99.9% pure nickel, 99.9% pure titanium, 99.9% pure zirconium, and 99.9% pure aluminum, and 10g of this alloy is smelted by a well-known electric arc furnace as a precursor for thinning. The smelting conditions for the raw materials of the belt are: the smelting current is gradually increased from 30A to 110A, and the smelting is repeated 3 times for 40 seconds each time, and the furnace is cooled to obtain Ni-Ti-Zr-Al alloy ingots;

[0040] The second step is to prepare Ni-Ti-Zr-Al precursor amorphous alloy ribbon

[0041] The Ni-Ti-Zr-Al alloy ingot prepared in the first step is removed from the surface oxide scale, and the Ni-Ti-Zr-Al amorphous alloy ribbon is prepared by vacuum stripping equipment. The stripping condition is: 9×10 -4 Heat and melt ...

Example Embodiment

[0050] Embodiment two:

[0051] The first step is the selection of alloy composition and alloy preparation

[0052] The selected alloy composition point is Ni 43 (Ti 0.35 Zr 0.45 Al 0.2 ) 57 , And smelt 10g of this alloy by a well-known electric arc furnace as the raw material for preparing the precursor ribbon. The smelting conditions are: the smelting current is gradually increased from 30A to 110A, and the smelting is repeated 3 times, 40 seconds each time, and the furnace is cooled to prepare Ni-Ti-Zr-Al alloy ingot;

[0053] The second step is to prepare Ni-Ti-Zr-Al precursor amorphous alloy ribbon

[0054] The Ni-Ti-Zr-Al alloy ingot prepared in the first step is removed from the surface oxide scale, and the Ni-Ti-Zr-Al amorphous alloy ribbon is prepared by vacuum stripping equipment. The stripping condition is: 9×10 -4 The molten alloy ingot is heated under Pa vacuum, and then the molten Ni-Ti-Zr-Al alloy is blow-cast to form an amorphous alloy thin strip. The pressure required...

Example Embodiment

[0060] Embodiment three:

[0061] The first step is the selection of alloy composition and alloy preparation

[0062] The selected alloy composition point is Ni 40 (Ti 0.35 Zr 0.45 Al 0.2 ) 60 , And smelt 10g of this alloy by a well-known electric arc furnace as the raw material for preparing the precursor ribbon. The smelting conditions are: the smelting current is gradually increased from 30A to 110A, and the smelting is repeated 3 times, 40 seconds each time, and the furnace is cooled to prepare Ni-Ti-Zr-Al alloy ingot;

[0063] The second step is to prepare Ni-Ti-Zr-Al amorphous alloy ribbon

[0064] The Ni-Ti-Zr-Al alloy ingot prepared in the first step is removed from the surface oxide scale, and the Ni-Ti-Zr-Al amorphous alloy ribbon is prepared by vacuum stripping equipment. The stripping condition is: 9×10 -4 The molten alloy raw materials are heated under Pa vacuum, and then the molten Ni-Ti-Zr-Al alloy is blow-cast to form an amorphous alloy thin strip. The pressure require...

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Abstract

The invention provides a self-supporting type nano-porous nickel/nickel oxide combined electrode plate and a preparation method thereof. The electrode plate is composed of a current collector and active substance, the current collector is composed of a nickel-based amorphous alloy base body and nano-porous nickel, and the active substance is nano nickel oxide which grows on the surface of the nano-porous nickel. The cross section of the electrode plate comprises three layers, the middle core layer is the nickel-based amorphous alloy base body, the surfaces of the two sides of the middle core layer are covered by combined electrode material layers composed of nano-porous nickel and nano nickel oxide, the thickness of the electrode plate is 25-35 micrometers, the thickness of each nano-porous nickel/nickel oxide combined electrode material layer is 2.1-3.5 micrometers, and the nickel-based amorphous alloy is composed of Ni40 + x (Ti0.35 Zr0.45 Al0.20) 60 - x (x=0-5). The effective specific area of active substance NiO is improved, the actual capacitance characteristic, which can be given to play in a super capacitor, of nickel oxide is improved, and the specific capacitance of the combined electrode plate can reach up to 847.9 F/cm<3>.

Description

Technical field: [0001] The invention relates to a method for preparing a nanoporous nickel / nickel oxide composite electrode material used for supercapacitors, especially pseudocapacitors, and belongs to the fields of new material technology and new energy technology. Background technique: [0002] In recent years, with the development of electric vehicles and various electronic devices, electrochemical capacitors have gradually become a research hotspot. Compared with traditional capacitors, electrochemical capacitors have higher energy density and wider operating temperature range. At the same time, it has traditional chemical Power supply can not match the high power density, long cycle life and superior pulse charge and discharge performance. [0003] It is well known that amorphous hydrated ruthenium oxide is the most promising electrode material for high-power and high-energy-density supercapacitors, but it is expensive and lacks resources, and the electrolyte used pol...

Claims

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Application Information

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IPC IPC(8): H01G11/26H01G11/46H01G11/86
CPCB82Y30/00B82Y40/00H01G11/00H01G11/26H01G11/30H01G11/46H01G11/86Y02E60/13
Inventor 秦春玲胡庆丰赵维民王志峰王丽娟
Owner HEBEI UNIV OF TECH
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