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A preparation method of molybdenum disulfide nanocomposite fiber with multi-level layered structure

A nano-composite fiber, layered structure technology, applied in nanotechnology, nanotechnology, nanotechnology and other directions for materials and surface science, can solve the problems of complex process, high cost, low output, etc., and achieve high charge and discharge. The effect of rate performance, high specific capacitance, and superior hydrogen storage performance

Active Publication Date: 2017-08-15
德清久蕴材料科学研究有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing preparation methods are complicated in technology, low in output and high in cost.

Method used

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  • A preparation method of molybdenum disulfide nanocomposite fiber with multi-level layered structure

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preparation example Construction

[0018] A preparation method of molybdenum disulfide nanocomposite fiber with multi-level layered structure, it comprises the steps:

[0019] 1) According to the number of parts by mass, add 0.1-5 parts of lithium chloride (LiCl) to 10-20 parts of N, N-dimethylacetamide (DMAc) and stir evenly, then add 0.5-2 parts of PMIA, at 60 Stir at -120°C to obtain a uniform spinning solution;

[0020] 2) Electrospinning the solution obtained in step 1), the propulsion speed is 0.2-2.0 ml / hour, the receiving distance is 5-20 cm, and the voltage is 13-30 kV. After collecting the spinning film, separate them in water and ethanol Dry at room temperature after washing;

[0021] 3) In parts by mass, add 1-15 parts of N,N-dimethylacetamide (DMAc) to 1-20 parts of water, then add 0.1-1.0 parts of lithium chloride (LiCl), stir evenly, and 0.01-0.3 parts of sodium molybdate (Na 2 MoO 4 ) with 0.05-1.0 parts of thioacetamide (CH 3 CSNH 2 ) were added respectively, and stirred evenly at room te...

Embodiment 1

[0025] A preparation method of molybdenum disulfide nanocomposite fiber with multi-level layered structure, it comprises the steps:

[0026] 1) According to the number of parts by mass, add 0.1 part of lithium chloride (LiCl) to 10 parts of N, N-dimethylacetamide (DMAc) and stir evenly, then add 0.5 part of PMIA, and stir at 60 ° C to obtain a uniform spinning solution;

[0027] 2) Electrospinning the solution obtained in step 1), the propulsion speed is 0.2 ml / hour, the receiving distance is 5 cm, and the voltage is 13 kV. After collecting the spinning film, wash it in water and ethanol respectively and dry it at room temperature Dry;

[0028] 3) According to the number of parts by mass, add 1 part of N, N-dimethylacetamide (DMAc) to 1 part of water, then add 0.1 part of lithium chloride (LiCl), after stirring evenly, add 0.01 part of sodium molybdate ( Na 2 MoO 4 ) with 0.05 parts of thioacetamide (CH 3 CSNH 2 ) were added respectively, and stirred evenly at room tempe...

Embodiment 2

[0032] A preparation method of molybdenum disulfide nanocomposite fiber with multi-level layered structure, it comprises the steps:

[0033] 1) In parts by mass, add 3 parts of lithium chloride (LiCl) to 15 parts of N,N-dimethylacetamide (DMAc) and stir evenly, then add 1 part of PMIA, and stir at 90°C to obtain a uniform spinning solution;

[0034] 2) Electrospinning the solution obtained in step 1), the propulsion speed is 1.0 ml / hour, the receiving distance is 12 cm, and the voltage is 20 kV. After collecting the spinning film, wash it in water and ethanol respectively and dry it at room temperature Dry;

[0035] 3) According to the number of parts by mass, 8 parts of N, N-dimethylacetamide (DMAc) were added to 10 parts of water, then 0.5 parts of lithium chloride (LiCl) was added, after stirring evenly, 0.15 parts of sodium molybdate ( Na 2 MoO 4 ) with 0.5 parts of thioacetamide (CH 3 CSNH 2 ) were added respectively, and stirred evenly at room temperature;

[0036...

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Abstract

The invention discloses a preparation method of a molybdenum disulfide nano composite fiber with a multilevel hierarchical structure. The method comprises the following steps: (1) adding lithium chloride (LiCl) to N,N-dimethylacetamide (DMAc) to stir evenly, adding polymetaphenylene isophthamide (PMIA), and stirring the PMIA to obtain a spinning solution; (2) carrying out electrostatic spinning on the obtained solution, collecting a spinning membrane, respectively washing the spinning membrane in water and ethanol and then drying the spinning membrane at room temperature; (3) adding the N,N-dimethylacetamide (DMAc) to water, adding the lithium chloride (LiCl), stirring the DMAc and the LiCl evenly, respectively adding sodium molybdate (Na2MoO4) and thioacetamide (CH3CSNH2) and stirring the Na2MoO4 and the CH3CSNH2 evenly at room temperature; (4) transferring the solution obtained from the step (3) into a polytetrafluoroethylene reaction kettle for reaction, naturally cooling the product to room temperature, respectively washing the product with acetone, water and ethanol, and then naturally drying the product in a room-temperature condition; and (5) carrying out thermal treatment on the product obtained from the step (4) in nitrogen atmosphere, further heating the product to 600-1,000 DEG C at the speed of 1 DEG C / min, remaining for 1-4 hours, and cooling the product to room temperature at the speed of 5 DEG C / min, so as to obtain the product.

Description

technical field [0001] The invention relates to a method for preparing molybdenum disulfide nanocomposite fibers, in particular to a method for preparing molybdenum disulfide nanocomposite fibers that are one-dimensional continuous scale-shaped and have a multi-level layered micro-nano structure. [0002] technical background [0003] MoS 2 As an inorganic graphene analog, it has a higher theoretical specific capacitance of 670 mAh / g, 1 part of MoS 2 4 lithium ions can be inserted. The weak force between adjacent layers is extremely beneficial for the insertion and extraction of lithium. With its layered structure and high theoretical capacitance value, it is considered to be a good choice for lithium battery electrode materials. The nanoscale layered structure can effectively reduce the volume change during charge and discharge, shorten the dispersion distance of lithium ions and increase their storage capacity. The researchers synthesized 30-50 nanometer hollow MoS by m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/58B82Y30/00
CPCB82Y30/00H01M4/366H01M4/5815H01M10/0525Y02E60/10
Inventor 欧阳申珅王晟王騊
Owner 德清久蕴材料科学研究有限公司