Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Nickel oxide powder and preparation method thereof

A technology of nickel oxide powder and nickel salt, which is applied in the direction of nickel oxide/nickel hydroxide, etc., can solve the problems of uneven product particle size, high concentration of precipitant, easy agglomeration, etc., achieve good sintering activity, simple preparation process, and eliminate impurities low taste effect

Inactive Publication Date: 2016-12-07
CHAOZHOU THREE CIRCLE GRP
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a strong alkali solution such as NaOH is added dropwise, the concentration of the local precipitant may be too high, resulting in uneven particle size and easy agglomeration of the product.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nickel oxide powder and preparation method thereof
  • Nickel oxide powder and preparation method thereof
  • Nickel oxide powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of embodiment of the preparation method of nickel oxide powder of the present invention, the preparation method of nickel oxide powder described in this embodiment is:

[0037] (1) add ethylenediamine in the nickel chloride aqueous solution, stir, obtain complex solution; Wherein, the mass concentration of nickel chloride in the nickel chloride aqueous solution is 100g / L, the mol ratio of nickel chloride and ethylenediamine It is 1:2.5 (that is, the molar ratio of nickel and ethylenediamine coordination atom N contained in the nickel chloride aqueous solution is 1:5);

[0038] (2) add sodium hydroxide solution in the complex compound solution gained in step (1), the mass concentration of sodium hydroxide in the sodium hydroxide solution is 100g / L, and contained sodium hydroxide and chloride in the sodium hydroxide solution The molar ratio of nickel chloride contained in the nickel aqueous solution is 2.5:1, and the pH value of the resulting mixture is controlled ...

Embodiment 2

[0043] An embodiment of the preparation method of the nickel oxide powder of the present invention, the difference between the preparation method of the nickel oxide powder described in this embodiment and the preparation method of the nickel oxide powder described in Example 1 is only in step (4) The firing temperature is different. In this embodiment, the calcination temperature in step (4) is 750°C.

[0044] The nickel oxide micropowder that present embodiment obtains, adopts HITACHI S-3400N type scanning electron microscope (scanningelectron microscope, SEM) to analyze it, scanning electron microscope picture is as follows image 3 and Figure 4 shown. The results show that the structure of the nickel oxide micropowder in this example is a typical cubic crystal system, the morphology of the sample is basically nearly spherical, and the dispersion is good, the particle size is about 200nm, and the specific surface area is 6.8m 2 / g.

Embodiment 3

[0046] An embodiment of the preparation method of the nickel oxide powder of the present invention, the difference between the preparation method of the nickel oxide powder described in this embodiment and the preparation method of the nickel oxide powder described in Example 1 is that the chlorine in step (1) is The concentration of nickel chloride aqueous solution is different. In this embodiment, the mass concentration of nickel chloride in the nickel chloride aqueous solution is 150 g / L.

[0047] The nickel oxide micropowder that present embodiment obtains, adopts HITACHI S-3400N type scanning electron microscope (scanningelectron microscope, SEM) to analyze it, scanning electron microscope picture is as follows Figure 5 and Figure 6 shown. The results show that the structure of the nickel oxide micropowder in this example is a typical cubic crystal system, the morphology of the sample is basically nearly spherical, and the dispersion is good, the particle size is abou...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to solid oxide powder and a preparation method thereof, in particular to nickel oxide powder and a preparation method thereof. The preparation method of the nickel oxide powder disclosed by the invention comprises the following steps of (1) mixing a nickel salt solution with a complexing agent, and performing stirring so as to obtain a complex compound solution, wherein the mole ratio of nickel ions contained in the nickel salt solution to donor atoms in the complexing agent is (1 to 5) to (1 to 6); (2) adding a strongly alkaline solution to the complex compound solution obtained in the step (1), performing stirring to obtain nickel hydroxide precursor precipitation, and washing the nickel hydroxide precursor precipitation with water so as to obtain paste; (3) drying the paste obtained in the step (2) so as to obtain a product precursor; and (4) roasting the product precursor obtained in the step (3) so as to obtain the nickel oxide powder. The nickel oxide powder prepared by the preparation method disclosed by the invention is free from clumping, tiny in particle size, low in impurity taste, controllable in sulfur taste, and particularly low in sodium taste and chlorine taste, and can be used as a nickel oxide powder material used for electronic components, and electrodes of solid oxide fuel cells.

Description

technical field [0001] The invention relates to a solid oxide powder and a preparation method thereof, in particular to a nickel oxide powder and a preparation method thereof. Background technique [0002] Nickel oxide powder has good catalytic performance and processing performance in various materials. It is an important inorganic material widely used in the fields of battery electrodes, catalysts, magnetic materials and ceramic pigments. At present, the main methods of preparing nano-NiO powder at home and abroad are: solid-phase method, hydrothermal method, sol-gel method and chemical precipitation method. (1) Solid-phase method: There are not many reports on the solid-phase method. Hu Hui et al. used room temperature solid-phase reaction to synthesize the precursor NiC 2 0 4 2H 2 0. After thermal decomposition, NiO black nano-powder with an average particle size of 15 nanometers, uniform particle distribution and no obvious agglomeration was obtained. (2) Hydrotherm...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01G53/04
CPCC01G53/04C01P2002/72C01P2004/03C01P2004/64C01P2006/12
Inventor 邱基华
Owner CHAOZHOU THREE CIRCLE GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com