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Nickel oxide nano rod array material, method for preparing same and application thereof

A technology of nanorod array and nickel oxide, which is applied in the direction of chemical instruments and methods, nickel oxide/nickel hydroxide, polycrystalline material growth, etc., can solve the problem that it is not easy to realize the control of particle size and distribution, easy residual impurities on the surface, Problems such as poor crystallinity of the product, to achieve the effect of large capacitance value, simple method and low cost

Active Publication Date: 2011-08-17
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation methods of these nickel oxide nano-films are widely used, but they all have certain obvious limitations, such as some require relatively high synthesis temperature, some products have poor crystallinity, and impurities are easy to remain on the surface; some are harmful to the environment. It has obvious pollution; some are not easy to realize the control of particle size and distribution

Method used

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  • Nickel oxide nano rod array material, method for preparing same and application thereof
  • Nickel oxide nano rod array material, method for preparing same and application thereof
  • Nickel oxide nano rod array material, method for preparing same and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] a. Take the foamed nickel sheet, put it into concentrated hydrochloric acid and ultrasonically wash it, then transfer it to deionized water and ethanol, and ultrasonically wash it respectively;

[0028] b. the preparation of nickel nitrate hexahydrate concentration is 0.143 mol / liter and urea concentration is 0.286 mol / liter solution, fully stirred to obtain a uniform stable solution;

[0029] c. Place the foamed nickel sheet obtained in step a into a 40 ml autoclave lined with polytetrafluoroethylene, then transfer the solution in step b to the reactor and heat it at 100°C for 12 hours. After the reaction, Cool to room temperature with cooling water, and the cooling time is less than 15 minutes;

[0030] d. Take out the nickel sheet in the reaction kettle, rinse it with water and ethanol, and finally ultrasonically clean it in water and ethanol;

[0031] e. Put the product obtained in step d into an oven at 100°C and dry it for 6 hours, then put it into a tube furnace...

Embodiment 2

[0034] a. Take the foamed nickel sheet, put it into concentrated hydrochloric acid and ultrasonically wash it, then transfer it to deionized water and ethanol, and ultrasonically wash it respectively;

[0035] B. preparation nickel chloride hexahydrate concentration is that 0.05 mol / liter and urea concentration are the solution of 0.14 mol / liter, fully stirs to obtain uniform stable solution;

[0036] c. Place the foamed nickel sheet obtained in step a into a 40 ml autoclave lined with polytetrafluoroethylene, then transfer the solution in step b to the autoclave and heat it at 70°C for 48 hours. After the reaction Cool to room temperature with cooling water, and the cooling time is less than 15 minutes;

[0037] d. Take out the nickel sheet in the reaction kettle, rinse it with water and ethanol, and finally ultrasonically clean it in water and ethanol;

[0038] e. Put the product obtained in step d into an oven at 100°C and dry it for 6 hours, then put it into a tube furnac...

Embodiment 3

[0041] a. Take the foamed nickel sheet, put it into concentrated hydrochloric acid and ultrasonically wash it, then transfer it to deionized water and ethanol, and ultrasonically wash it respectively;

[0042] B. preparation nickel sulfate heptahydrate concentration is the solution that 0.43 mol / liter and urea concentration are 0.58 mol / liter, fully stirs to obtain uniform stable solution;

[0043] c. Place the foamed nickel sheet obtained in step a into a 40 ml autoclave lined with polytetrafluoroethylene, then transfer the solution in step b to the reactor and heat it at 140°C for 2 hours. After the reaction Cool to room temperature with cooling water, and the cooling time is less than 15 minutes;

[0044] d. Take out the nickel sheet in the reaction kettle, rinse it with water and ethanol, and finally ultrasonically clean it in water and ethanol;

[0045] e. Put the product obtained in step d into an oven at 100°C and dry it for 6 hours, then put it into a tube furnace and c...

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Abstract

The invention discloses a nickel oxide nano rod array material, a method for preparing the same and application thereof, and belongs to the technical field of inorganic advanced nano materials. The nickel oxide nano rods are vertically and orderly grown on the nickel foam substrate, and the nickel oxide nano rods are 100 to 800 nanometers long and 5 to 30 nanometers wide. The preparation method comprises the following steps of: putting the nickel foam substrate in concentrated hydrochloric acid, deionized water and ethanol for ultrasonic cleaning respectively; dissolving soluble nickel salt and urea in deionized water to obtain clear solution; obliquely putting the nickel foam substrate in a reaction kettle, and moving the clear solution to the reaction kettle for hydrothermal reaction, and after reaction, using the cooling water to cool the reaction kettle to the room temperature; taking the nickel foam substrate out of the reaction kettle, and cleaning the nickel foam substrate withwater and ethanol; and drying the product in an oven, and calcining the dried product. The one-piece product has a very big capacitance value which can be well kept even under high current density and is high in cycle performance, so that the product is a super capacitor material with a great application prospect.

Description

technical field [0001] The invention relates to a nickel oxide nanorod array material and its preparation method and application, belonging to the technical field of inorganic advanced nanometer materials. Background technique [0002] Supercapacitors have the advantages of high power density, high energy density, long cycle life, no pollution to the environment, and the ability to operate at low voltage [China Science and Technology Information, 2010, 17: 36], and are expected to become the 21st century A new type of green energy. 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 resource-scarce [Nano Lett. business development. Nickel oxide has the advantages of excellent electrochemical performance and relatively low price, and has recently attracted extensive research and attention in the field of supercapacitors. In addition, because the mor...

Claims

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Application Information

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IPC IPC(8): C30B29/16C30B29/62C30B7/10C01G53/04
Inventor 孙晓明陆之毅常铮
Owner BEIJING UNIV OF CHEM TECH
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