Method for preparing alpha-phase porous flaky nickel hydroxide microspheres

A nickel hydroxide and flake technology, applied in the field of preparing nickel hydroxide microspheres, can solve problems such as toxic cost and long reaction time, and achieve the effects of short production cycle, low production cost and high yield

Inactive Publication Date: 2014-02-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods usually have a long reaction time, require solvents that are either toxic or expensive, or require the use of surfactants, etc.

Method used

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  • Method for preparing alpha-phase porous flaky nickel hydroxide microspheres
  • Method for preparing alpha-phase porous flaky nickel hydroxide microspheres
  • Method for preparing alpha-phase porous flaky nickel hydroxide microspheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take 0.02mol of nickel nitrate, then add 500mL of distilled water, stir to fully dissolve, add 0.02mol of hexamethylenetetramine at room temperature, stir and dissolve evenly, add to the reaction kettle, seal it and react at 150°C for 1 hour. After the reaction, the product was filtered, washed repeatedly with water, and dried at 120° C. to obtain α-phase porous sheet-shaped nickel hydroxide microspheres.

[0028] The crystal phase structure of the product was characterized by Shimadzu XRD-6000 X-ray powder diffractometer (XRD), using Cu Kα rays with a wavelength of 0.15406 nm, tube voltage 40kV, tube current 40mA; using Hitachi S-4800 scanning electron A microscope (SEM) was used to observe the morphology of the product, and the working voltage was 5kV.

[0029] The XRD patterns and SEM photos of the obtained α-phase porous nickel hydroxide microspheres are shown in figure 1 and figure 2 According to the results of XRD pattern analysis, the product is pure α-phase n...

Embodiment 2

[0031] Take 0.02 mol of nickel chloride, then add 200 mL of distilled water, stir to fully dissolve, add 0.03 mol of hexamethylenetetramine at room temperature, stir and dissolve evenly, add to the reaction kettle, seal it and react at 180°C for 2 hours. After the reaction, the product was filtered, washed repeatedly with water, and dried at 100° C. to obtain α-phase porous sheet-shaped nickel hydroxide microspheres.

[0032] The XRD spectrum and the microscopic SEM photos of the obtained α-phase porous sheet-like nickel hydroxide microspheres, such as image 3 and Figure 4 shown by image 3 and Figure 4 It can be seen that the product has high purity, uniform shape, and a size of 2 to 4 microns.

Embodiment 3

[0034] Take 0.02mol of nickel acetate, then add 50mL of distilled water, stir to fully dissolve, add 0.04mol of hexamethylenetetramine at room temperature, stir and dissolve evenly, add to the reaction kettle, seal it and react at 200°C for 1 hour. After the reaction, the product was filtered, washed repeatedly with water, and dried at 80° C. to obtain α-phase porous sheet-shaped nickel hydroxide microspheres.

[0035] XRD of the obtained α-phase porous nickel hydroxide microspheres diffraction Atlas and microscopic SEM photos, such as Figure 5 and Image 6 shown by Figure 5 and Image 6 It can be seen that the product has high purity, uniform shape, and a size of 4-6 microns.

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Abstract

The invention relates to a method for preparing alpha-phase porous flaky nickel hydroxide microspheres. The method comprises the following steps: fully dissolving nickel salt in water to prepare nickel salt aqueous solution; adding hexamethylene tetramine into the nickel salt aqueous solution, stirring at room temperature to uniformly dissolve, holding in a high-pressure reaction kettle with a polytetrafluoroethylene inner lining; heating to 150-210 DEG C in a closed environment and preserving the heat for 1-2 hours; filtering the obtained product, washing repeatedly with water and drying to obtain the alpha-phase porous flaky nickel hydroxide microspheres. The method has the advantages of simple preparation process, cheap raw materials, short production period, mild conditions, high product purity, uniform morphology and the like.

Description

technical field [0001] The invention relates to a method for preparing nickel hydroxide microspheres, in particular to a method for preparing α-phase porous sheet-shaped nickel hydroxide microspheres. Background technique [0002] The performance and application of porous micropowder materials depend to a great extent on their shape and size. The controlled preparation of micron and nanometer inorganic materials has attracted extensive attention from the scientific community, especially the ordered nanomaterials formed by self-assembly. Its special performance has attracted much attention. Porous inorganic materials have great application potential, such as catalysis, ion exchange, electrode materials for energy storage, etc., and thus have attracted more and more attention. [0003] Nickel hydroxide, as a transition metal hydroxide, is an important electrode material with a hexagonal layered structure and relatively low price. Nickel hydroxide with a porous structure can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04B82Y40/00
Inventor 程继鹏张静刘芙
Owner ZHEJIANG UNIV
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