Molybdenum selenide sulfide/carbon nanotube composite material, preparation and application thereof

A technology of carbon nanotubes and composite materials, which is applied in the direction of hybrid capacitor electrodes, electrical components, battery electrodes, etc., can solve the problems of poor semiconductor conductivity and limited applications, and achieve easy operation, inhibit agglomeration and stacking, and reduce Gibbs freedom Can effect

Inactive Publication Date: 2016-09-07
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 o

Method used

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  • Molybdenum selenide sulfide/carbon nanotube composite material, preparation and application thereof
  • Molybdenum selenide sulfide/carbon nanotube composite material, preparation and application thereof
  • Molybdenum selenide sulfide/carbon nanotube composite material, preparation and application thereof

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 of 2:1) mixed solution, stir and react at 80°C for 8 hours to obtain an acid-treated carbon nanotube mixed acid solution;

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

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

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

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

[0051] (6) Pour the mixed solution containing carbon n...

Embodiment 2

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

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

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

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

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

[0060] (6) Pour the mixed solution containing carbon n...

Embodiment 3

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

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

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

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

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

[0069] (6) Pour the mixed solution containing carbon n...

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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, and particularly relates to a molybdenum sulfide selenide / 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 mechanical properties, high thermal stability and good electrical conductivity, and they 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 capacity of the composite electrode material, but also significantly enhance the mechanical properties of the electrode material such as film formation, making it useful in energy conversion and storage devices, electronic Sensors and other fields have extremely broad application prospects and become one of the research hotspots ...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/58H01M4/583H01M4/62C01B31/02H01G11/36H01G11/30
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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