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Preparation method of porous titanium-substrate-loaded nickel oxide (nickel hydroxide) electrode with electroconductive ceramic interface

A technology of conductive ceramics and nickel hydroxide, applied in the fields of electrochemical energy and nanomaterials, can solve the problems of different interfacial charge conduction capabilities and huge differences in the stability of electrochemically active electrodes.

Inactive Publication Date: 2018-07-13
陈军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the different degrees of lattice matching between different transition metal oxides or hydroxides and the conductive matrix, the interface charge conduction ability is different, resulting in huge differences in their electrochemical activity and electrode stability.

Method used

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  • Preparation method of porous titanium-substrate-loaded nickel oxide (nickel hydroxide) electrode with electroconductive ceramic interface
  • Preparation method of porous titanium-substrate-loaded nickel oxide (nickel hydroxide) electrode with electroconductive ceramic interface
  • Preparation method of porous titanium-substrate-loaded nickel oxide (nickel hydroxide) electrode with electroconductive ceramic interface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Use an electronic analytical balance to weigh 0.4g 5000 mesh titanium hydride powder, 0.1g 5000 mesh nickel powder, pour the powder into a 500 ml corundum ball mill jar in turn, use zirconia beads as ball mill beads, and mix for 30min at a speed of 350r / min, because The sample itself is relatively fine, so this step is only for mixing the sample evenly.

Embodiment 2

[0032] Just can obtain the metal powder of pure titanium, 80% titanium, 60% titanium, 40% titanium, 20% titanium, pure nickel by changing the ratio of titanium and nickel in Example 1, and the metal powder is taken out from the ball mill jar, because the ball mill jar High-speed ball milling will cause the sample to stick to the wall and cause powder agglomeration, so the sample powder taken out must be ground for 30 minutes in a mortar to make the powder compact formable. Weigh 5.0g of mixed sample powder and pour it into a steel mold with a size of 10mm*17mm. The pressure of the oil cylinder is 3.6T, that is, the pressure is 211.76 Mpa. After pressurization, the pressure is kept for 10s, and the titanium-nickel metal powder compact is obtained after demoulding. .

Embodiment 3

[0034] Put the titanium-nickel metal powder compact into a corundum porcelain boat and put it into a tube furnace. The first stage of burning: vacuumize. Then set the sintering parameters, raise the temperature from room temperature to 600°C, and the heating rate is 1°C / min, so that the titanium hydride is slowly decomposed from the green body, so that the void structure is complete and does not collapse, and the holding time is 60 minutes to completely dehydrogenate. The second stage of firing: first ventilate the mixed gas of argon and oxygen for 30 minutes to exhaust the air in the tube as much as possible, then raise the temperature from 600°C to 950°C at a heating rate of 5°C / min to sinter the metal powder and form ceramics on the surface Oxide layer, keep warm for 60min.

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Abstract

The invention discloses a preparation method of a porous titanium-substrate-loaded nickel oxide (nickel hydroxide) electrode with an electroconductive ceramic interface. The preparation method includes (1), ball-milling and mixing metal titanium hydride powder and nickel powder to obtain a metal powder mixture;(2), putting a certain amount of the metal powder mixture into a steel die, and performing pressurization to obtain a metal pressed blank; (3), putting the metal pressed blank into a tubular furnace, and controlling sintering atmosphere and temperature time to obtain the porous titanium-substrate-loaded nickel oxide electrode with the electroconductive ceramic interface; (4), washing the surface of the electrode by dilute acid and deionized water; (5), in nickel nitrate, depositing acertain amount of nickel hydroxide on the surface of the electrode according to a cathodic polarization method to obtain the porous titanium-substrate-loaded nickel hydroxide electrode with the electroconductive ceramic interface. The preparation method has the advantages that the porous electroconductive ceramic interface TinO2n-1-Ti*NiOy generated during high-temperature hypoxic sintering is utilized, contact resistance between active substances and a substrate is reduced, and contact strength between the active substances and the substrate is improved.

Description

Technical field: [0001] The invention belongs to the field of electrochemical energy and nanometer materials, and relates to a method for preparing a titanium-skeleton porous conductive ceramic interface integrated electrode for a supercapacitor. Background technique: [0002] Supercapacitors are also called electrochemical capacitors. They are different from traditional capacitors that rely on the electric field formed before the positive and negative plates and dielectrics to store charges. Supercapacitors are composed of electrolytes, electrodes, and electrode materials. They are between traditional capacitors and batteries. A new type of energy storage device, which has the characteristics of short charging time, long cycle life, good temperature characteristics, high current charging and discharging, energy saving and environmental protection, etc. It is widely used in consumer electronics, solar power systems, smart grids, new energy vehicles, industrial Energy-saving ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/46H01G11/86
CPCY02E60/13H01G11/24H01G11/30H01G11/46H01G11/86
Inventor 桑商斌陈军高丁
Owner 陈军
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