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Regular quadrangular prism nickel vanadate nanomaterial and preparation method thereof

A technology of nanomaterials and square prisms, which is applied in the field of square prism nickel vanadate nanomaterials and its preparation, to achieve the effects of novel structure, good electron conduction and ion diffusion ability, and low cost

Inactive Publication Date: 2018-06-01
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nickel vanadate nanomaterials are still less studied, and only nanoparticles and random lamellar structures have been prepared.
So far, no tetragonal nickel vanadate with a one-dimensional structure has been reported, and its one-dimensional structure may have better electron conduction and ion diffusion capabilities, so the preparation of this structure is of great significance

Method used

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  • Regular quadrangular prism nickel vanadate nanomaterial and preparation method thereof
  • Regular quadrangular prism nickel vanadate nanomaterial and preparation method thereof
  • Regular quadrangular prism nickel vanadate nanomaterial and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Add 0.2g nickel nitrate, 0.04g vanadium pentoxide, and 0.3g PEG10000 into 25mL aqueous solution and stir to mix evenly to obtain a mixed solution;

[0031] (2) Put the mixed solution obtained in step (1) into a 45mL hydrothermal kettle, place it in an oven, and react at 180°C for 18h;

[0032] (3) After the reaction described in step (2), the hydrothermal kettle is naturally cooled to room temperature, and then the product is collected by centrifugation, washed with water three times, and then dried to obtain the square prism nickel vanadate nanomaterial.

[0033] figure 1 It is the SEM photo of the regular tetragonal prism nickel vanadate nanomaterial obtained in Example 1 at a multiple of 5 um. It can be seen from the figure that the length of the columnar body is about 5 μm.

[0034] figure 2 It is the SEM photo of the regular tetragonal prism nickel vanadate nanomaterial obtained in Example 1 at a multiple of 2um. It can be seen from the figure that the bot...

Embodiment 2

[0039] (1) Add 0.3g of nickel nitrate, 0.06g of vanadium pentoxide, and 0.4g of PEG10000 into 25mL of aqueous solution and stir to mix evenly to obtain a mixed solution;

[0040] (2) Put the mixed solution obtained in step (1) into a 45mL hydrothermal kettle, place it in an oven, and react at 200°C for 12h;

[0041] (3) After the reaction described in step (2), the hydrothermal kettle is naturally cooled to room temperature, and then the product is collected by centrifugation, washed with water three times, and then dried to obtain the square prism nickel vanadate nanomaterial.

Embodiment 3

[0043] (1) Add 0.5g of nickel nitrate, 0.1g of vanadium pentoxide, and 0.4g of PEG10000 into 25mL of aqueous solution and stir to mix evenly to obtain a mixed solution;

[0044] (2) Put the mixed solution obtained in step (1) into a 45mL hydrothermal kettle, place it in an oven, and react at 160°C for 24h;

[0045] (3) After the reaction described in step (2), the hydrothermal kettle is naturally cooled to room temperature, and then the product is collected by centrifugation, washed with water three times, and then dried to obtain the square prism nickel vanadate nanomaterial.

[0046] The reagents used in the present invention are all purchased from Sinopharm Chemical Reagent Co., Ltd.; wherein, nickel nitrate, AR (Shanghai test), purity ≥ 98%; vanadium pentoxide, GR (Shanghai test), purity ≥ 99.5%; PEG10000, color Solid (Woke), relative molecular mass 8500-11500. The instrument used in the present invention is a conventional chemical instrument.

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Abstract

The invention provides a regular quadrangular prism nickel vanadate nanomaterial and a preparation method thereof, belonging to the field of synthesis of inorganic materials. The preparation method isa one-step hydrothermal method and comprises the steps of adding a certain amount of nickel nitrate, vanadium pentoxide and PEG10000 into a certain amount of water solution, evenly stirring and mixing, and carrying out a hydrothermal reaction for a period of time to obtain the regular quadrangular prism nickel vanadate nanomaterial. The first-time synthesized regular quadrangular prism nickel vanadate nanomaterial is novel in structure, simple and easy in control of preparation method, and good in stability, thus having a wide application prospect in the field of energy storage.

Description

technical field [0001] The invention belongs to the field of inorganic material synthesis, and in particular relates to a square prism nickel vanadate nanometer material and a preparation method thereof. Background technique [0002] In recent years, with the excessive consumption of fossil fuels and the growing demand for clean energy, the design and development of new energy storage devices has become a research hotspot. Among various energy storage devices, supercapacitors have received increasing attention due to their high power density, fast charge-discharge capability, and excellent cycle stability. For supercapacitor devices, the electrode material is the key to determine the performance. Among various cathode materials, nickel-based materials, such as nickel hydroxide, nickel oxide, and nickel sulfide, have been extensively studied due to their high specific capacity and good rate capability. [0003] It is well known that the structure and performance of material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/00
Inventor 吴庆生昝广涛
Owner TONGJI UNIV
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