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Preparation method and application of MXene derivative/metal nano composite material

A metal nano-composite material technology, applied in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of difficult to support interlayer structure, application limitations, impact on electrode performance, etc., to increase the number of redox centers, Increased storage capacity and low cost

Active Publication Date: 2021-05-07
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the weak van der Waals force between MXene sheets is difficult to support the interlayer structure. During the preparation of electrode materials, MXene sheets are easy to stack up, which will have a great impact on the performance of the electrode.
In addition, due to the low mass specific capacitance of MXene materials, its application in many aspects is limited.

Method used

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  • Preparation method and application of MXene derivative/metal nano composite material
  • Preparation method and application of MXene derivative/metal nano composite material
  • Preparation method and application of MXene derivative/metal nano composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The preparation method of the MXene derivative / metal composite material (AMX-Zn) of the present embodiment is as follows:

[0039] (1) First add 200 mg MXene Ti 3 C 2 Disperse in 60 mL 1M KOH solution, add 1.36 mL H 2 o 2 (30%, AR) magnetically stirred for 1 h.

[0040] (2) Transfer the mixed solution in step (1) to an autoclave, and conduct a hydrothermal reaction at 140 °C for 12 h.

[0041] (3) Wash the product in step (2) with deionized water until the pH of the supernatant becomes neutral,

[0042] (4) Finally, the sample was dried in a vacuum drying oven at 60 °C for 12 hours to obtain a three-dimensional structure of MXene derivatives, that is, hairy spherical alkalized MXene (AMX).

[0043] (5) Mix 200 mg AMX powder, 0.3 mmol ZnCl 2 and 60 mg of polyvinylpyrrolidone k-30 were dispersed in 40 mL of ethylene glycol, and magnetically stirred for 2 h under simulated sunlight.

[0044] (6) Transfer the mixed solution in step (5) to an autoclave, and heat it at...

Embodiment 2

[0047] The preparation method of the MXene derivative / metal composite material (AMX-Ag) of the present embodiment is as follows:

[0048] (1) First add 200 mg MXene Ti 3 C 2 Disperse in 60 mL 1M KOH solution, add 1.36 mL H 2 o 2 (30%, AR) magnetically stirred for 1 h.

[0049] (2) Transfer the mixed solution in step (1) to an autoclave, and conduct a hydrothermal reaction at 140 °C for 12 h.

[0050] (3) Wash the product in step (2) with deionized water until the pH of the supernatant becomes neutral,

[0051](4) Finally, the sample was dried in a vacuum oven at 60 °C for 12 hours to obtain a three-dimensional structure of the hairy spherical alkalized MXene (AMX).

[0052] (5) Mix 200 mg AMX powder, 0.3 mmol AgNO 3 and 60 mg of polyvinylpyrrolidone k-30 were dispersed in 40 mL of ethylene glycol, and magnetically stirred for 2 h under simulated sunlight.

[0053] (6) Transfer the mixed solution in step (5) to an autoclave, and heat it at 160° C. for 3 hours.

[0054] ...

Embodiment 3

[0056] The preparation method of the MXene derivative / metal composite material (AMX-Cu) of the present embodiment is as follows:

[0057] (1) First add 200 mg MXene Ti 3 C 2 Disperse in 60 mL 1M KOH solution, add 1.36 mL H 2 o 2 (30%, AR) magnetically stirred for 1 h.

[0058] (2) Transfer the mixed solution in step (1) to an autoclave, and conduct a hydrothermal reaction at 140 °C for 12 h.

[0059] (3) Wash the product in step (2) with deionized water until the pH of the supernatant becomes neutral,

[0060] (4) Finally, the sample was dried in a vacuum oven at 60 °C for 12 hours to obtain a three-dimensional structure of the hairy spherical alkalized MXene (AMX).

[0061] (5) 200 mg AMX powder, 0.3 mmol Cu(NO 3 ) 2 and 60mg of polyvinylpyrrolidone k-30 were dispersed in 40mL of ethylene glycol, and magnetically stirred for 2h under simulated sunlight.

[0062] (6) Transfer the mixed solution in step (5) to an autoclave, and heat it at 160° C. for 3 hours.

[0063] ...

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Abstract

The invention discloses a preparation method and an application of an MXene derivative / metal nano composite material. The preparation method comprises the following steps: dispersing MXene Ti3C2 and H2O2 in a KOH solution, magnetically stirring, and transferring into a high-pressure kettle for a hydrothermal reaction at 140 DEG C for 12 hours; washing with deionized water, and carrying out vacuum drying to obtain a MXene derivative (AMX); mixing an AMX powder, metal salt M and polyvinylpyrrolidone k-30, dispersing in ethylene glycol, magnetically stirring, transferring into the high-pressure kettle, and carrying out hydrothermal treatment at 160 DEG C for 3 hours; and washing a product with deionized water, and carrying out vacuum drying to obtain the MXene derivative / metal nano composite material. The MXene derivative / metal composite material is synthesized in one step through a hydrothermal method and used as an electrode material of a supercapacitor, good electrochemical energy storage characteristics are achieved, and the preparation method is simple in process, low in cost, environmentally friendly, high in repeatability, capable of achieving large-scale preparation and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanomaterials, and in particular relates to a preparation method and application of MXene derivative / metal nanocomposite materials. Background technique [0002] With the rapid development and application of modern electronic devices, especially portable electronic devices and electric vehicles, there is an increasing demand for low-cost, high-performance and environmentally friendly energy storage devices. Due to its high power density, fast charge-discharge rate, and high cycle stability, supercapacitors have attracted widespread attention in the past decade due to their high power density, fast charge-discharge rate, and high cycle stability. An emerging two-dimensional MXene material has been attracting people's attention since its inception. However, the weak van der Waals force between MXene sheets is difficult to support the interlayer structure. During the preparation of electrode ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/30
CPCH01G11/86H01G11/30H01G11/24Y02E60/13
Inventor 李子炯尚翠张腊梅谢罗刚郭东方代海洋朱祥
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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