A kind of molybdenum sulfide/nickel oxide composite material and its preparation method and application

A composite material, molybdenum sulfide technology, used in nanotechnology for materials and surface science, hybrid/electric double layer capacitor manufacturing, hybrid capacitor electrodes, etc. Specific capacity and other issues, to achieve the effect of improving redox reaction activity, making up for poor electrical conductivity and good energy storage properties

Inactive Publication Date: 2019-02-01
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of van der Waals force makes molybdenum sulfide easy to agglomerate and stack, thereby reducing the specific surface area and specific capacity of molybdenum sulfide

Method used

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  • A kind of molybdenum sulfide/nickel oxide composite material and its preparation method and application
  • A kind of molybdenum sulfide/nickel oxide composite material and its preparation method and application
  • A kind of molybdenum sulfide/nickel oxide composite material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Add 10g of molybdenum sulfide ore (molybdenite) to 1000g of N,N-dimethylformamide, and use an experimental ultrasonic cleaner for continuous ultrasonication for 6 hours to obtain a uniform dispersion, which is the dispersion of molybdenum sulfide nanosheets. liquid;

[0038] (2) Take 75mL of the above dispersion, settle, filter with suction, and dry (in a freeze dryer, the temperature is -50°C, and the drying time is 24h) to obtain solid molybdenum sulfide nanosheets, which are alternately washed three times with 20mL ethanol and 20mL deionized water .

[0039](3) Disperse the above-mentioned molybdenum sulfide nanosheets in 45mL deionized water, and ultrasonically obtain a stable dispersion of molybdenum sulfide nanosheets;

[0040] (4) Get 435, 870, 1740mg nickel nitrate hexahydrate respectively and join in the stable dispersion liquid of above-mentioned molybdenum sulfide nanosheets, mechanically stir to make it disperse evenly;

[0041] (5) Put the above three...

Embodiment 2

[0060] (1) Add 5g molybdenum sulfide ore (molybdenite) to 500g N-methyl-2-pyrrolidone, and use an experimental ultrasonic cleaning machine for continuous ultrasonication for 8 hours to obtain a uniform dispersion, which is molybdenum sulfide nanosheets;

[0061] (2) Take 100 mL of the above-mentioned dispersion liquid, settle, filter with suction to obtain solid molybdenum sulfide nanosheets, and wash with 20 mL of ethanol and 20 mL of deionized water alternately for three times.

[0062] (3) Disperse the above-mentioned molybdenum sulfide nanosheets in 40mL deionized water, and obtain a stable dispersion of molybdenum sulfide nanosheets by ultrasonic;

[0063] (4) Get 712mg nickel chloride hexahydrate and join in the above-mentioned dispersion liquid, mechanical stirring makes it disperse evenly;

[0064] (5) Dissolve 480 mg of urea in 40 mL of deionized water, add it to the mixture in (5), and stir to make it evenly mixed;

[0065] (6) Place the above dispersion in an oil b...

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Abstract

The invention relates to a molybdenum sulfide / nickel oxide composite material and a preparation method and application thereof. The structure of the composite material is that a nickel oxide nanosheet grows on a molybdenum sulfide nanosheet. The preparation method comprises the steps of dispersing the molybdenum sulfide nanosheet into a polar solvent and carrying out ultrasonic treatment to obtain a molybdenum sulfide nanosheet dispersion liquid; dissolving a nickel salt into the molybdenum sulfide nanosheet dispersion liquid, carrying out ultrasonic treatment to obtain a mixed liquid, adding a complexing agent, reacting at 80-100 DEG C for 6-24 hours and washing and drying the product to obtain a molybdenum sulfide / nickel hydroxide composite material; and carrying out thermal treatment to obtain the molybdenum sulfide / nickel oxide composite material. The preparation process is simple and easy to operate, the reaction temperature is low, the security coefficient is high, and the prepared molybdenum sulfide / nickel oxide composite material can be used as an excellent electrode material for new energy devices of a high-performance super-capacitor, a lithium battery and the like.

Description

technical field [0001] The invention belongs to the field of nickel oxide composite material and its preparation, in particular to a molybdenum sulfide / nickel oxide composite material and its preparation method and application. Background technique [0002] As a class of transition metal oxides, nickel oxide has the advantages of non-toxicity, environmental friendliness, easy preparation, good catalytic performance, and high theoretical specific capacity. Nickel oxide is considered to be an ideal supercapacitor material to replace ruthenium oxide (currently commercial supercapacitor electrode material) because of its wide source, easy preparation, and low price, and a lot of research has been done on it. At present, the preparation methods of nickel oxide electrode materials mainly include sol-gel method, electrochemical deposition method, chemical precipitation method, thermal decomposition method, template method, hydrothermal method and so on. The morphology of nickel ox...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/30H01G11/46H01G11/86H01M4/36H01M4/52H01M4/58H01L31/0224B82Y30/00
CPCB82Y30/00H01G11/30H01G11/46H01G11/86H01L31/022425H01M4/364H01M4/52H01M4/58Y02E60/10Y02E60/13
Inventor 刘天西王开张超赵哲周俊黄钊琪
Owner DONGHUA UNIV
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