Preparation method of MXene microspheres

A technology of microspheres and nanosheets is applied in the field of preparation of MXene microspheres, which can solve the problems affecting the performance advantages of MXene materials, and achieve the effects of good ion accessibility, easy large-scale production and low cost.

Active Publication Date: 2020-12-08
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Purpose of the invention: the purpose of the present invention is to provide a method for preparing MXene microspheres, which solves the problem that existing methods need to introduce heterogeneous materials and affect the performance advantages of MXene materials

Method used

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  • Preparation method of MXene microspheres
  • Preparation method of MXene microspheres

Examples

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Embodiment 1

[0017] Prepare MXene microspheres, comprising the following steps:

[0018] (1) Take 50 mg of d-Ti with 3 layers and a size of 0.1 μm 3 C 2 The nanosheets were dissolved in 100ml deionized water to form a colloid with an MXene concentration of 0.5mg / ml;

[0019] (2) The prepared MXene colloid is added dropwise to the surface of the monocrystalline silicon substrate, and the diameter of the MXene colloidal microspheres added dropwise to the surface of the monocrystalline silicon substrate is 0.1mm;

[0020] (3) By drying the colloid at an air flow rate of 0.5 cm / min, MXene microspheres with a diameter of 2 μm can be quickly obtained on the surface of the single crystal silicon substrate.

[0021] The prepared MXene microspheres were tested by SEM, and the test results were as follows: figure 1 and 2 as shown, figure 1 It shows that the diameter of the MXene microspheres prepared in Example 1 is about 2 μm, figure 2 It shows that the MXene microspheres prepared in Example...

Embodiment 2

[0023] Prepare MXene microspheres, comprising the following steps:

[0024] (1) Take 500 mg of d-Ti with 5 layers and a size of 1 μm 3 C 2 The nanosheets were dissolved in 100ml deionized water to form a colloid with an MXene concentration of 5mg / ml;

[0025] (2) the prepared MXene colloid is added dropwise to the polytetrafluoroethylene matrix surface, and the diameter of the MXene colloid microspheres added dropwise to the polytetrafluoroethylene matrix surface is 1mm;

[0026] (3) By drying the colloid at an air flow rate of 5 cm / min, MXene microspheres with a diameter of 5 μm can be quickly obtained on the surface of the polytetrafluoroethylene substrate.

Embodiment 3

[0028] Prepare MXene microspheres, comprising the following steps:

[0029] (1) Take 1500 mg of d-Ti with 10 layers and a size of 2 μm 3 C 2 The nanosheets were dissolved in 100ml deionized water to form a colloid with an MXene concentration of 15mg / ml;

[0030] (2) The prepared MXene colloid is added dropwise to the PVC-coated cloth substrate surface, and the diameter of the MXene colloid microspheres added dropwise to the PVC-coated cloth substrate surface is 5mm;

[0031] (3) Dry the colloid at an air flow rate of 10 cm / min, and quickly obtain MXene microspheres with a diameter of 10 μm on the surface of the PVC-coated cloth substrate.

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Abstract

The invention discloses a preparation method of MXene microspheres. The method comprises the following steps: dropwisely adding a uniform MXene nanosheet colloid to the surface of a non-wetting matrix, and drying by air flow, thereby quickly preparing the MXene microspheres. According to the preparation method, introduction of heterogeneous materials is not involved, the problem of dilution of thedominant performance of the MXene material by a composite process is avoided, the surfaces of the MXene microspheres have a large number of wrinkles, a larger effective specific surface area and a good ion accessibility can be brought, stacking of the two-dimensional material MXene can be effectively inhibited, operation is simple, the cost is low, and the preparation process is safe and pollution-free. Mass production is easy, and the MXene microspheres are quickly prepared by adopting an airflow blow-drying method, so that the production time is remarkably shortened, and the production efficiency is remarkably improved.

Description

technical field [0001] The invention relates to a material preparation method, in particular to a preparation method of MXene microspheres. Background technique [0002] Transition metal carbides and / or nitrides (MXene), as a new type of two-dimensional material, have shown broad application prospects in the field of supercapacitor electrode materials due to their good electrical conductivity, fast charge response, and remarkable pseudocapacitive characteristics. Among them, two-dimensional titanium carbide (Ti 3 C 2 ) is a typical MXene material, which is very suitable for supercapacitor electrode materials due to its excellent conductivity, good hydrophilicity, and abundant and tunable surface functional groups. However, Ti 3 C 2 Interlayer collapse and stacking are prone to occur, seriously affecting its performance as a supercapacitor electrode material, which is a major obstacle to the practical application of MXene materials. [0003] At present, the mainstream st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/921B82Y40/00H01G11/24H01G11/30H01G11/86
CPCB82Y40/00C01P2004/24C01P2004/32C01P2004/45C01P2004/60C01P2004/61C01P2004/62C01B32/921H01G11/24H01G11/30H01G11/86
Inventor 孙正明王立璇杨莉张培根何炜
Owner SOUTHEAST UNIV
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