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Nickel-based material with spherical core-nano porous shell composite structure and preparation method of nickel-based material

A nanoporous, composite structure technology, applied in structural parts, electrical components, battery electrodes, etc., can solve problems such as the difficulty in preparing spherical core-porous shell composite structures

Inactive Publication Date: 2019-02-15
SOUTHWEAT UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a nickel-based material with a composite structure of a spherical core-nanoporous shell and a preparation method thereof, which can solve the problem that it is difficult to prepare a composite structure of a spherical core-porous shell in the existing process

Method used

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  • Nickel-based material with spherical core-nano porous shell composite structure and preparation method of nickel-based material
  • Nickel-based material with spherical core-nano porous shell composite structure and preparation method of nickel-based material
  • Nickel-based material with spherical core-nano porous shell composite structure and preparation method of nickel-based material

Examples

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Effect test

Embodiment 1

[0030] A method for preparing a nickel-based material with a spherical core-nano porous shell composite structure includes the following steps:

[0031] (1) Add nickel acetate to deionized water, stir to dissolve, prepare a nickel acetate solution with a molar concentration of 0.01 mole / L, and then add PVP with a weight of 0.5% by weight of nickel acetate to the nickel acetate solution, and stir to dissolve. Mixed solution, spare;

[0032] (2) Add oxalic acid to deionized water, stir to dissolve, prepare an oxalic acid solution with a molar concentration of 0.011 mole / L;

[0033] (3) Mix the mixed solution obtained in step (1) with the oxalic acid solution in a volume ratio of 0.5:1.0, stir evenly, and then quickly add ammonia water dropwise to adjust the pH to 7.0, stir again, and then stand still at 20°C Set culture for 12h;

[0034] (4) After standing incubation, filter and collect the precipitate, wash it with deionized water several times, and then wash it with absolute ethanol ...

Embodiment 2

[0037] A method for preparing a nickel-based material with a spherical core-nano porous shell composite structure includes the following steps:

[0038] (1) Add nickel acetate to deionized water, stir and dissolve to prepare a nickel acetate solution with a molar concentration of 0.05 mole / L, and then add 1.2% by weight of nickel acetate PVP to the nickel acetate solution, and stir to dissolve. Mixed solution, spare;

[0039] (2) Add oxalic acid to deionized water and stir to dissolve to prepare an oxalic acid solution with a molar concentration of 0.055 mole / L;

[0040] (3) Mix the mixed solution obtained in step (1) with the oxalic acid solution in a volume ratio of 1:1, stir evenly, and then quickly add ammonia water dropwise to adjust the pH to 8.0, stir again, and then stand still at 40°C Place culture for 0.5h;

[0041] (4) After standing incubation, filter and collect the precipitate, wash it with deionized water several times, and wash it with absolute ethanol once, then plac...

Embodiment 3

[0044] A method for preparing a nickel-based material with a spherical core-nano porous shell composite structure includes the following steps:

[0045] (1) Add nickel acetate to deionized water and stir to dissolve to prepare a nickel acetate solution with a molar concentration of 0.1 mole / L. Then add PVP with a weight of 2% by weight of nickel acetate to the nickel acetate solution and stir to dissolve. Mixed solution, spare;

[0046] (2) Add oxalic acid to deionized water and stir to dissolve to prepare an oxalic acid solution with a molar concentration of 0.11 mole / L;

[0047] (3) Mix the mixed solution obtained in step (1) with the oxalic acid solution in a volume ratio of 1.0:1.5, stir evenly, and then quickly add ammonia water dropwise to adjust the pH to 8.5, stir again, and then stand still at 60°C Set culture for 2h;

[0048] (4) After standing incubation, filter and collect the precipitate, wash it with deionized water several times, and then wash it with absolute ethanol ...

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Abstract

The invention discloses a nickel-based material with a spherical core-nano porous shell composite structure and a preparation method of the nickel-based material. The method comprises the steps as follows: (1) dissolving nickel acetate in deionized water to prepare a nickel acetate solution, then, adding PVP, and performing stirring for dissolution; (2) stirring and mixing the solution obtained inthe step (1) with an oxalic acid solution, adjusting the pH value to 7.0-8.5, stirring the mixture, and leaving the mixture to stand for culture at 20-60 DEG C for 0.5-12 h; (3) performing filtration, collecting a precipitate, cleaning the precipitate 3-5 times, drying the precipitate at 70-95 DEG C for 6-12 h, performing heat treatment at 320-400 DEG C for 15-60 min under the protection of protective gas, and cooling the product to the room temperature to obtain the nickel-based material. A core-shell structure and a nano porous structure can be effectively composited in a nested manner, composite nesting of the spherical nickel core and the nano porous nickel shell can be realized, and a larger space exists between the core and the shell, which shows a bell structure.

Description

Technical field [0001] The invention belongs to, and specifically relates to a nickel-based material with a spherical core-nano porous shell composite structure and a preparation method thereof. Background technique [0002] Nickel-based nanomaterials with core-shell structure and nanoporous structure are an important functional material. Based on their inherent chemical reaction activity, they have been widely used in the fields of electrocatalysis, chemical catalysis and electrode materials. [0003] With the development of the new energy technology revolution in the international society, the research and application of lithium batteries and fuel cells have been pushed to the cusp of history, and the most important key part of the battery-the electrode has always been the bottleneck of the development of high energy density batteries, which is currently effective The main electrode materials used are noble metals such as Pt, Ir, Ru, etc. These noble metals are expensive and limi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/38H01M4/86H01M4/90
CPCH01M4/366H01M4/38H01M4/8657H01M4/9041Y02E60/10Y02E60/50
Inventor 李涛马国华龚勇
Owner SOUTHWEAT UNIV OF SCI & TECH
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