A kind of molybdenum sulfoselenide/carbon nanotube composite material and its preparation and application

A technology of carbon nanotubes and composite materials, used in the preparation/purification of carbon, hybrid capacitor electrodes, structural parts, etc., can solve the problems of poor semiconductor conductivity, limited applications, etc. Excellent performance

Inactive Publication Date: 2018-10-02
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, pure molybdenum selenide is easy to agglomerate, and the internal defects of the sheet are less, which inhibits the exposure of catalytic active sites, and its conductivity as a semiconductor is poor, thus limiting its application in catalysis and other fields.

Method used

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  • A kind of molybdenum sulfoselenide/carbon nanotube composite material and its preparation and application
  • A kind of molybdenum sulfoselenide/carbon nanotube composite material and its preparation and application
  • A kind of molybdenum sulfoselenide/carbon nanotube composite material and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Disperse 3 g of carbon nanotubes in 100 mL of concentrated sulfuric acid-concentrated nitric acid (volume ratio: 2:1) mixed solution, stir and react at 80° C. for 8 hours to obtain a mixed acid solution of acid-treated carbon nanotubes;

[0047] (2) After the carbon nanotube mixed acid solution is cooled to room temperature, it is centrifuged, washed twice with deionized water and ethanol, and dried in a vacuum oven at 50° C. to obtain acid-treated carbon nanotube powder;

[0048] (3) Dispersing 50 mg of acid-treated carbon nanotube powder in 25 mL of N,N-dimethylformamide, and ultrasonicating for a period of time to obtain an organic dispersion of carbon nanotubes;

[0049] (4) Dissolve 50mg of selenium powder in 25mL of hydrazine hydrate, stir for a period of time to make it evenly dispersed;

[0050] (5) Dissolve 76.61mg of sodium molybdate in 0.2mL of water, and ultrasonically dissolve it to make it evenly dispersed;

[0051] (6) Pour the mixed solution contain...

Embodiment 2

[0055] (1) Disperse 3 g of carbon nanotubes in 100 mL of concentrated sulfuric acid-concentrated nitric acid (volume ratio: 2:1) mixed solution, stir and react at 80° C. for 8 hours to obtain a mixed acid solution of acid-treated carbon nanotubes;

[0056] (2) After the carbon nanotube mixed acid solution is cooled to room temperature, it is centrifuged, washed twice with deionized water and ethanol, and dried in a vacuum oven at 50° C. to obtain acid-treated carbon nanotube powder;

[0057] (3) Dispersing 50 mg of acid-treated carbon nanotube powder in 25 mL of N,N-dimethylformamide, and ultrasonicating for a period of time to obtain an organic dispersion of carbon nanotubes;

[0058] (4) Dissolve 50mg of selenium powder in 25mL of hydrazine hydrate, stir for a period of time to make it evenly dispersed;

[0059] (5) Dissolve 76.61mg of sodium molybdate in 0.2mL of water, and ultrasonically dissolve it to make it evenly dispersed;

[0060] (6) Pour the mixed solution contain...

Embodiment 3

[0064] (1) Disperse 3 g of carbon nanotubes in 100 mL of concentrated sulfuric acid-concentrated nitric acid (volume ratio: 2:1) mixed solution, stir and react at 80° C. for 8 hours to obtain a mixed acid solution of acid-treated carbon nanotubes;

[0065] (2) After the carbon nanotube mixed acid solution is cooled to room temperature, it is centrifuged, washed twice with deionized water and ethanol, and dried in a vacuum oven at 50° C. to obtain acid-treated carbon nanotube powder;

[0066] (3) Dispersing 50 mg of acid-treated carbon nanotube powder in 25 mL of N,N-dimethylformamide, and ultrasonicating for a period of time to obtain an organic dispersion of carbon nanotubes;

[0067] (4) Dissolve 50mg of selenium powder in 25mL of hydrazine hydrate, stir for a period of time to make it evenly dispersed;

[0068] (5) Dissolve 76.61mg of sodium molybdate in 0.2mL of water, and ultrasonically dissolve it to make it evenly dispersed;

[0069] (6) Pour the mixed solution contain...

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Abstract

The present invention relates to a molybdenum selenide sulfide / carbon nanotube composite material, preparation and application thereof. According to the molybdenum selenide sulfide / carbon nanotube composite material, molybdenum selenide sulfide nanosheets uniformly wrap a carbon nanotube. Preparation of the composite material includes the following steps of performing mixed acid treatment on the carbon nanotube; then in-site growing molybdenum selenide on the carbon nanotube by using a solvothermal method so as to obtain a molybdenum selenide-carbon nanotube composite material; and doping sulphur in molybdenum selenide nanosheets through a high temperature replacement reaction so as to obtain the molybdenum selenide sulfide / carbon nanotube composite material. The composite material can be used in an electrocatalytic water decomposition device, a lithium ion battery, and a super capacitor. The molybdenum selenide and the carbon nanotube are compounded effectively, so that a good synergistic effect of the molybdenum selenide and the carbon nanotube can be achieved. The electronic structure is adjusted and controlled by doping sulphur. The prepared molybdenum selenide sulfide / carbon nanotube composite material has excellent electrochemical performance.

Description

technical field [0001] The invention belongs to the field of carbon nanotube composite material and its preparation and application, in particular to a molybdenum sulfoselenide / carbon nanotube composite material and its preparation and application. Background technique [0002] Carbon nanotubes have a unique one-dimensional nanostructure, large specific surface area, super strong mechanical properties, high thermal stability and good electrical conductivity, and have received extensive attention and research since their discovery. Adding it as a conductive filler to other electrode materials can not only improve the electron and ion transport capabilities of the composite electrode material, but also significantly enhance the mechanical properties of the electrode material such as film formation, making it suitable for use in energy conversion and storage devices, electronics Sensors and other fields have extremely broad application prospects, and have become one of the rese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/583H01M4/62C01B32/05H01G11/36H01G11/30
CPCH01G11/30H01G11/36H01M4/366H01M4/58H01M4/583H01M4/62Y02E60/10Y02E60/13
Inventor 刘天西张超杨静王开刘思良刘颖黄钊琪
Owner DONGHUA UNIV
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