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Ti3C2Tx MXene one-dimensional hollow nanotube as well as preparation method and application thereof

A technology of hollow tubes and fibers, which is applied in the field of preparation of one-dimensional hollow tubes, can solve the problems of cumbersome preparation process and achieve the effects of avoiding aggregation and stacking, low energy consumption, and avoiding long ion transmission

Active Publication Date: 2021-08-03
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method needs to build a template in advance, so the preparation process is more cumbersome

Method used

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  • Ti3C2Tx MXene one-dimensional hollow nanotube as well as preparation method and application thereof
  • Ti3C2Tx MXene one-dimensional hollow nanotube as well as preparation method and application thereof
  • Ti3C2Tx MXene one-dimensional hollow nanotube as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Prepare 0.4 mg / mL Ti 3 C 2 T x The MXene suspension is collected as solution A in a water bath;

[0043] (2) Add 0.8 g of PMMA and 0.2 g of PVP with an average molecular weight of 1,300,000 to 4.5 mL of DMF, stir under a magnetic stirrer to dissolve completely, and stir for 12 h to obtain solution B;

[0044] (3) The solution B was electrospun and collected with solution A under stirring. The positive voltage of electrospinning was 12kV, the negative pressure was -6 kV, the receiving distance was 10 cm, and the spinning temperature was 40°C. Fiber precursor;

[0045] (4) washing the fiber precursor obtained in step (3) three times with deionized water;

[0046] (5) Dry the fiber precursor obtained in step (4) in a freeze dryer for 48 h;

[0047] (6) Put the dried fiber precursor obtained in step (5) in a porcelain boat, and under the protection of a hydrogen-argon mixture atmosphere, raise the temperature to 150°C at a heating rate of 1°C / min, keep it warm for...

Embodiment 2

[0049] (1) Prepare 0.6 mg / mL Ti 3 C 2 T x The MXene suspension is collected as solution A in a water bath;

[0050] (2) Add 0.8 g of PMMA and 0.2 g of PVP with an average molecular weight of 1,300,000 to 4.5 mL of DMF, stir under a magnetic stirrer to dissolve completely, and stir for 12 h to obtain solution B;

[0051] (3) The solution B was electrospun and collected with solution A under stirring. The positive voltage of electrospinning was 12kV, the negative pressure was -6 kV, the receiving distance was 10 cm, and the spinning temperature was 40°C. Fiber precursor;

[0052] (4) washing the fiber precursor obtained in step (3) three times with deionized water;

[0053] (5) Dry the fiber precursor obtained in step (4) in a freeze dryer for 48 h;

[0054] (6) Put the dried fiber precursor obtained in step (5) in a porcelain boat, and under the protection of a hydrogen-argon mixture atmosphere, raise the temperature to 150°C at a heating rate of 1°C / min, keep it warm for...

Embodiment 3

[0056] (1) Prepare 0.8 mg / mL Ti 3 C 2 T x The MXene suspension is collected as solution A in a water bath;

[0057] (2) Add 0.8 g of PMMA and 0.2 g of PVP with an average molecular weight of 1,300,000 to 4.5 mL of DMF, stir under a magnetic stirrer to dissolve completely, and stir for 12 h to obtain solution B;

[0058] (3) The solution B was electrospun and collected with solution A under stirring. The positive voltage of electrospinning was 12kV, the negative pressure was -6 kV, the receiving distance was 10 cm, and the spinning temperature was 40°C. Fiber precursor;

[0059] (4) washing the fiber precursor obtained in step (3) three times with deionized water;

[0060] (5) Dry the fiber precursor obtained in step (4) in a freeze dryer for 48 h;

[0061] (6) Put the dried fiber precursor obtained in step (5) in a porcelain boat, and under the protection of a hydrogen-argon mixture atmosphere, raise the temperature to 150°C at a heating rate of 1°C / min, keep it warm for...

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Abstract

The invention belongs to the technical field of preparation of one-dimensional hollow tubes, and particularly relates to a Ti3C2Tx MXene one-dimensional hollow nanotube as well as a preparation method and application thereof. The diameter of the Ti3C2Tx MXene one-dimensional hollow tube disclosed by the invention is about 300 to 800 nm; The synthesis method comprises the following steps: adding polyvinylpyrrolidone and polymethyl methacrylate into N,N-dimethylformamide, dissolving to obtain a spinning solution, carrying out electrostatic spinning, carrying out water bath collection by using a Ti3C2Tx MXene suspension to obtain a fiber precursor, and carrying out heat treatment to obtain the Ti3C2Tx MXene one-dimensional hollow tube structure. The one-dimensional hollow tube structure synthesized by the method is uniform in morphology, can effectively inhibit material aggregation and stacking and shorten a lithium ion transmission path as a negative electrode material, and shows high lithium storage capacity and excellent rate capability.

Description

technical field [0001] The invention belongs to the technical field of preparation of one-dimensional hollow tubes, in particular to a Ti 3 C 2 T x MXene one-dimensional hollow nanotube and its preparation method and application. Background technique [0002] In recent years, two-dimensional layered nanomaterials, such as graphene, hexagonal boron nitride, transition metal sulfide, graphitic carbon nitride, black phosphorus, etc., have been booming in recent years, as a class of electrode materials for lithium-ion batteries with excellent performance, exciting aroused great research interest. Compared with other electrode materials, two-dimensional materials have a higher aspect ratio, can be more fully in contact with the electrolyte, and have more active sites, which can shorten the diffusion path of lithium ions in the material and increase the electrochemical rate of the material. properties, moreover, atomic layer-thick films have many novel effects compared to int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/10D01F1/08H01M4/587H01M10/0525B82Y40/00B82Y30/00
CPCD01F9/10D01F1/08H01M4/587H01M10/0525B82Y30/00B82Y40/00Y02E60/10
Inventor 原长洲孙璇刘洋侯林瑞
Owner UNIV OF JINAN
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