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A kind of foamed nickel loaded mnco 2 o 4.5 Preparation method and application of /mxene composite nanomaterial

A composite nanomaterial and nanomaterial technology, which is applied in the field of preparation of foamed nickel-supported MnCo2O4.5/MXene composite nanomaterials, can solve the problems of low conductivity, unsatisfactory, and dissociation, and achieve good conductivity and easy operation , The effect of simple operation method

Active Publication Date: 2022-05-27
ZHENGZHOU UNIV
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Problems solved by technology

However, it is not ideal for practical applications due to low conductivity and free active sites

Method used

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  • A kind of foamed nickel loaded mnco <sub>2</sub> o <sub>4.5</sub> Preparation method and application of /mxene composite nanomaterial
  • A kind of foamed nickel loaded mnco <sub>2</sub> o <sub>4.5</sub> Preparation method and application of /mxene composite nanomaterial
  • A kind of foamed nickel loaded mnco <sub>2</sub> o <sub>4.5</sub> Preparation method and application of /mxene composite nanomaterial

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Embodiment 1

[0039] Foamed nickel-supported MnCo of this embodiment 2 O 4.5 The preparation method of / MXene composite nano-electrode material includes the following steps:

[0040] Step 1. MnCo 2 O 4.5 Synthesis of nanomaterials: Before sample preparation, a cleaned nickel foam (1 × 4 cm 2 )stand-by. 0.33 mmol Mn(NO 3 ) 2 ·4H 2 O, 0.66 mmol Co(NO 3 ) 2 ·6H 2 O, 4 mmol urea, 0.13 mmol CTAB and 1.66 mmol NH 4 F was dissolved in 30 mL of deionized water. Stir for 30 minutes to form a homogeneous solution. The solution and the nickel foam to be used were then transferred to a 50 mL autoclave and heated at 120°C for 12 hours. After the reaction was completed, the samples were taken out and repeatedly washed with deionized water and ethanol several times to remove excess products and impurities, and then the samples were put into a vacuum drying oven for vacuum drying. The samples were dried at 70°C for 12 hours. Finally, calcined at 350 °C for 2 h to obtain MnCo 2 O 4.5 nanoma...

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Abstract

The invention provides foamed nickel loaded MnCo 2 o 4.5 The preparation method of / MXene composite nanomaterials is as follows: firstly, the sea urchin-like MnCo was synthesized on the nickel foam by the traditional hydrothermal method. 2 o 4.5 nanomaterials, and then treated with cetyltrimethylammonium bromide to design MnCo with cations on the surface 2 o 4.5 -CTAB + Electrode materials, modified MXene through electrostatic self-assembly, obtained MnCo 2 o 4.5 / MXene composite electrode materials. The preparation method is simple, and the MXene with the lamellar structure is self-assembled in the sea urchin-like MnCo 2 o 4.5 Nanomaterials greatly increase the specific surface area of ​​the material, which is more conducive to the transport and exchange of ions during the electrochemical reaction. The electrode material not only has good electrical conductivity, but also has a unique lamellar flake structure that can bring considerable specific capacitance.

Description

technical field [0001] The invention relates to the field of super capacitors, in particular to a foam nickel-loaded MnCo 2 O 4.5 Preparation method of / MXene composite nanomaterials and application of the composite nanomaterials in supercapacitors. Background technique [0002] Energy issues have always been related to the survival and development of human beings. Especially since the end of the 20th century, human beings have been faced with severe environmental crisis and various resource crises. With the rapid population growth and rapid economic development, the demand for resources and the environment in various countries has exceeded the supply capacity of the ecosystem. In order to overcome the need for modern emerging energy sources, several technologies have been gradually implemented to generate electricity from renewable sources such as solar energy, wind energy, hydroelectric power, fuel cells, etc. However, due to the discontinuous generation of a lot of ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/30H01G11/26H01G11/24
CPCH01G11/86H01G11/30H01G11/26H01G11/24
Inventor 徐洁郭佳慧张迎九张莹王振威
Owner ZHENGZHOU UNIV
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