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Contractive inner-structure-adjustable mesoporous inorganic salt nanotube material, preparation method therefor and application thereof

A technology of inorganic salt and internal structure, applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve problems such as limited applications, and achieve cheap raw materials, large output, and excellent electrochemical performance of materials Effect

Active Publication Date: 2016-03-02
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the low-cost, high-reproducibility, and high-yield electrospinning technology combined with sintering process to prepare complex inorganic material nanotubes has been rarely reported, which greatly limits its further application.

Method used

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  • Contractive inner-structure-adjustable mesoporous inorganic salt nanotube material, preparation method therefor and application thereof
  • Contractive inner-structure-adjustable mesoporous inorganic salt nanotube material, preparation method therefor and application thereof
  • Contractive inner-structure-adjustable mesoporous inorganic salt nanotube material, preparation method therefor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: (the CoMn of shrinkage 2 o 4 tube-in-tube nanostructures)

[0043] 1) take by weighing the polyvinyl alcohol of the high molecular weight of 1g, the polyvinyl alcohol of the medium molecular weight of 0.75g, the polyvinyl alcohol molecular weight of the low molecular weight of 0.35g, and the cobalt acetate tetrahydrate of 1.5mmol and the manganese acetate tetrahydrate of 3mmol At the same time, add 20mL of deionized water, put it in a constant temperature water bath at 80°C and stir it magnetically for 6 hours to dissolve it completely, forming a transparent solution;

[0044] 2) Add the precursor solution in step 1) into the injection, perform electrospinning under the conditions of positive high voltage 15kV and negative high voltage -2kV, and receive nanofibers with aluminum foil;

[0045] 3) Place the nanofibers obtained in step 2) in an oven at 120°C to dry for 5 hours;

[0046] 4) The composite nanofibers obtained by electrospinning in step 3) wer...

Embodiment 2

[0053] Embodiment 2: (the CoMn of shrinkage 2 o 4 tube midline nanostructures)

[0054] 1) take by weighing the polyvinyl alcohol of the high molecular weight of 1g, the polyvinyl alcohol of the medium molecular weight of 0.75g, the polyvinyl alcohol molecular weight of the low molecular weight of 0.35g, and the cobalt acetate tetrahydrate of 1.5mmol and the manganese acetate tetrahydrate of 3mmol At the same time, add 20mL of deionized water, put it in a constant temperature water bath at 80°C and stir it magnetically for 6 hours to dissolve it completely, forming a transparent solution;

[0055] 2) Add the precursor solution in step 1) into the injection, perform electrospinning under the conditions of positive high voltage 15kV and negative high voltage -2kV, and receive nanofibers with aluminum foil;

[0056] 3) Place the nanofibers obtained in step 2) in an oven at 120°C to dry for 5 hours;

[0057] 4) The composite nanofibers obtained by electrospinning in step 3) wer...

Embodiment 3

[0060] Embodiment 3: (the shrinking MnCo 2 o 4 tube-in-tube nanostructures)

[0061] 1) take by weighing the polyvinyl alcohol of the high molecular weight of 1g, the polyvinyl alcohol of the middle molecular weight of 0.75g, the polyvinyl alcohol molecular weight of the low molecular weight of 0.35g, and the cobalt acetate tetrahydrate of 3mmol and the manganese acetate tetrahydrate of 1.5mmol At the same time, add 20mL of deionized water, put it in a constant temperature water bath at 80°C and stir it magnetically for 6 hours to dissolve it completely, forming a transparent solution;

[0062] 2) Add the precursor solution in step 1) into the injection, perform electrospinning under the conditions of positive high voltage 15kV and negative high voltage -2kV, and receive nanofibers with aluminum foil;

[0063] 3) Place the nanofibers obtained in step 2) in an oven at 120°C to dry for 5 hours;

[0064] 4) The composite nanofibers obtained by electrospinning in step 3) were h...

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Abstract

The invention relates to a contractive inner-structure-adjustable mesoporous inorganic salt nanotube material and a preparation method therefor. The material can serve as a negative electrode active material of a lithium ion battery and the like. The material adopts a contractive line-in-tube or tube-in-tube nanostructure consists of inorganic salt nanoparticles. An outer tube of a line-in-tube or inner and outer tubes of a tube-in-tube are inwards contracted. The diameter of the outer tube of the tube-in-tube is 180-210 nm, and the diameter of the inner tube of the tube-in-tube is 80-120 nm. The diameter of the outer tube of the line-in-tube is 180-210 nm, and the diameter of an inner line of the line-in-tube is 30-50 nm. The material has the beneficial effects that the material serves as an energy storage material, has excellent electrochemical performance, and has the characteristics of cheap raw materials, simple and environmentally-friendly process, high yield and excellent electrochemical performance. The method provides a universal strategy for preparing a complicated nanotube, and has potential of large-scale application.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and electrochemical devices, and in particular relates to a shrinkable mesoporous inorganic salt nanotube material with an adjustable internal structure and a preparation method thereof. The material can be used as a lithium ion battery negative electrode active material and has extremely The earth promotes universality. Background technique [0002] With the development of material science, major research discoveries have gradually focused on micro-nano materials with hierarchical complex structures, because these microscopic multi-level structures can make materials possess many excellent properties. Due to the development of modern synthesis techniques and analytical tests, microscopic and nanomaterials also undergo this structural evolution from simple to complex. Furthermore, the third-generation micro / nanomaterials with more complex internal structures have greatly stimulated the rese...

Claims

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Application Information

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IPC IPC(8): H01M4/58B82Y30/00
CPCB82Y30/00H01M4/58Y02E60/10
Inventor 麦立强孟甲申牛朝江
Owner WUHAN UNIV OF TECH