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Synthesis method of nickel-aluminum hydrotalcite nanomaterials

A technology of nickel-aluminum hydrotalcite and nanomaterials, applied in the direction of nanotechnology, nickel compounds, nanotechnology, etc., can solve the problems of unstable capacitor structure, too fast weakening of cycle life, etc., achieve excellent electrochemical characteristics, overcome agglomeration phenomenon and Overlap phenomenon, high yield effect

Active Publication Date: 2016-08-24
四川英能基科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for synthesizing nickel-aluminum hydrotalcite nanomaterials, which solves the existing problem of unstable capacitor structure, which leads to the shortcoming of cycle life weakening too fast.

Method used

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  • Synthesis method of nickel-aluminum hydrotalcite nanomaterials
  • Synthesis method of nickel-aluminum hydrotalcite nanomaterials

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preparation example Construction

[0029] The synthesis method of nickel-aluminum hydrotalcite nanomaterials, the preparation steps are as follows:

[0030] 1) Take nickel nitrate solution, add aluminum nitrate nonahydrate solid material and stir well;

[0031] 2) Add sodium polystyrene sulfonate solution or starch solution into the above mixed solution and stir evenly;

[0032] 3) Add urea to the above mixed solution and stir evenly;

[0033] 4) Transfer the above liquid to a container for sealed storage;

[0034] 5) Carry out heating reaction at 60-240 degrees Celsius, and the reaction time is 1-48h;

[0035] 6) Take the sediment for filtration washing or centrifugal washing;

[0036] 7) After drying at 20-80 degrees Celsius for 1-24 hours, a flower-shaped three-dimensional nickel-aluminum hydrotalcite nanomaterial composed of two-dimensional nanosheets is prepared.

[0037] Step 1) The Ni 2+ The molar mass of Al is 3+ 2-5 times of that, wherein the concentration of nickel nitrate is 0.1-3mol / L. The mo...

Embodiment 1

[0039] 1) Measure 2-100ml of 0.1-3mol / L nickel nitrate solution, add 10-500mg of aluminum nitrate nonahydrate solid material and stir well;

[0040] 2) Measure 0.1-50g / L polystyrene sodium sulfonate (PSS) solution or 5-100ml starch solution into the above mixed solution and stir evenly;

[0041] 3) Weigh 1-100mmol of urea and add it to the above mixed solution and stir evenly;

[0042] 4) Transfer the above liquid to the reactor;

[0043] 5) Carry out hydrothermal reaction at 60-240 degrees Celsius, and the reaction time is 1-24h.

[0044] 6) Take the precipitate for filtration washing or centrifugation washing several times.

[0045] 7) Dry at 20-80 degrees Celsius for 24 hours, that is, the figure 1 The flower-shaped NiAl hydrotalcite nanomaterials are shown.

[0046] The characterization results of the nickel-aluminum hydrotalcite nanomaterials prepared in this example are as follows figure 2 As shown, it is indicated that nickel aluminum hydrotalcite is a micron-scal...

Embodiment 2

[0048] 1) Measure 10ml of 0.1mol / L nickel nitrate solution, add 10mg of aluminum nitrate nonahydrate solid material and stir well;

[0049] 2) Measure 20ml of 0.1g / L polystyrene sodium sulfonate (PSS) solution and add it to the above mixed solution and stir evenly;

[0050] 3) Weigh 1 mmol of urea and add it to the above mixed solution and stir evenly;

[0051] 4) Transfer the above liquid to the reactor;

[0052] 5) Carry out hydrothermal reaction at 60 degrees Celsius, and the reaction time is 24h;

[0053] 6) Take the precipitate and carry out filtration washing or centrifugal washing several times;

[0054] 7) Dry at 60 degrees Celsius for 24 hours, that is, the figure 1 Schematic flower-shaped nickel-aluminum hydrotalcite nanomaterials.

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Abstract

The invention discloses a synthetic method of a nickel aluminum layered double hydroxide nano material. The synthetic method comprises the following preparation steps: step 1, taking a nickel nitrate solution, adding an aluminum nitrate nonahydrate solid material, and then fully and uniformly stirring; step 2, taking and adding a sodium polystyrenesulfonate solution or a starch solution to the mixed solution obtained in the step 1, and then stirring uniformly; step 3, adding urea to the mixed solution obtained in the step 2 and then uniformly stirring; step 4, transferring the solution obtained in the step 3 to a vessel to be stored in a sealing manner; step 5, carrying out hydrothermal reaction, water-bath reaction or oil-bath reaction under the temperature of 60-240 DEG C for 1-48 h; step 6, taking out the precipitate and enabling the precipitate to be subjected to filtration washing or centrifugal washing; step 7, drying under the temperature of 20-80 DEG C for 1-24 h, so as to obtain the flower-shaped nickel aluminum layered double hydroxide three-dimensional nano material formed by two-dimensional nano-sheets. The nickel aluminum layered double hydroxide nano material obtained by adopting the method provided by the invention has an extremely large specific area, and has good electrochemical characteristics.

Description

technical field [0001] The invention belongs to the field of synthesis of micro-nano materials, and in particular relates to a synthesis method of a nickel-aluminum hydrotalcite nanomaterial with a flower-like structure composed of two-dimensional nanosheets. Background technique [0002] In recent years, materials with excellent electrochemical properties have gradually entered the field of micro-nano materials. The electroactive material with a large specific surface effectively improves the utilization efficiency of the material and greatly improves the electroactivity of the material. However, in the process of continuous nano-materialization, there is a phenomenon that the material performance decreases significantly with the use time. This phenomenon shows that there is a phenomenon of material agglomeration and agglomeration of nano-materials during the reaction process. The original great specific surface area is greatly reduced. Therefore, how to prepare nano-elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G53/00B82Y30/00B82Y40/00
Inventor 陈泽祥李海王艳张继君
Owner 四川英能基科技有限公司
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