Molybdenum selenide/polyaniline nanofiber composite and preparation method thereof

A nanofiber and composite material technology, applied in the direction of fiber type, fiber treatment, fiber chemical characteristics, etc., can solve the problems of poor electrical conductivity, the excellent performance of pure molybdenum selenide cannot be fully utilized, etc., and achieve high electrical conductivity and experimental design. The effect of ingenious, high catalytic performance and energy storage performance

Inactive Publication Date: 2016-01-27
FUDAN 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 it preferentially grows the inert inner layer structure instead of the active sheet edge, and a large number of a

Method used

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  • Molybdenum selenide/polyaniline nanofiber composite and preparation method thereof
  • Molybdenum selenide/polyaniline nanofiber composite and preparation method thereof
  • Molybdenum selenide/polyaniline nanofiber composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Embodiment 1, This embodiment includes the following steps:

[0028] (1) Add 500 mg of aniline to 50 mL of water, stir to obtain a uniform solution A; add 250 mg of ammonium persulfate to 50 mL of water, and stir to obtain a uniform solution B;

[0029] (2) Quickly introduce the obtained solution A into solution B, raise the temperature to 60°C, keep it for 6h, filter and dry, and prepare polyaniline nanofibers;

[0030] (3) Add 100mg of selenium powder into 10mL of 50% hydrazine hydrate, continue to stir, and raise the temperature to 80°C. After the temperature is stable, keep it for 2 hours to prepare a selenium powder dispersion;

[0031] (4) Dissolve 5mL of the prepared selenium powder dispersion and 76.6mg of sodium molybdate in 35mL N,N- In the dimethylformamide solvent, keep stirring to prepare a uniform salt solution;

[0032] (5) Add 70 mg of the prepared polyaniline nanofibers into the saline solution, stir and transfer to a hydrothermal kettle, and react ...

Example Embodiment

[0033] Embodiment 2, Change the consumption of the selenium powder dispersion liquid in embodiment 1 into 2.5mL, the consumption of sodium molybdate becomes 38.3mg, all the other are the same as embodiment 1, the composite material finally obtained is denoted as MoSe 2 / PANI-2. Implementation results: molybdenum selenide nanosheets grow uniformly on polyaniline nanofibers; with MoSe 2 / PANI-1 compared to MoSe 2 Molybdenum selenide nanosheets in / PANI-2 have smaller sheets and less content.

Example Embodiment

[0034] Embodiment 3, Change the consumption of the selenium powder dispersion liquid in embodiment 1 into 7.5mL, the consumption of sodium molybdate becomes 114.9mg, all the other are the same as embodiment 1, the composite material finally obtained is denoted as MoSe 2 / PANI-3. Implementation results: molybdenum selenide nanosheets grow uniformly on polyaniline nanofibers; with MoSe 2 / PANI-1 compared to MoSe 2 The molybdenum selenide nanosheets in / PANI-3 have larger sheets and more content.

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Abstract

The invention belongs to the technical field of a transition metal selenide-conductive polymer and particularly relates to a molybdenum selenide/polyaniline nanofiber composite and a preparation method of the molybdenum selenide/polyaniline nanofiber composite. The preparation method comprises the steps of preparing polyaniline nanofibers by a solution method and growing molybdenum selenide nanosheets in situ on the polyaniline nanofibers by a one-step solvothermal method. The prepared molybdenum selenide/polyaniline nanofiber composite is controllable in pattern, has higher specific surface area and excellent conductivity, can serve as an ideal high-performance electrocatalysis material and an electrode material of new energy devices such as a lithium ion battery and a solar battery.

Description

technical field [0001] The invention belongs to the technical field of transition metal selenide-conductive polymers, and in particular relates to a molybdenum selenide / polyaniline nanofiber composite material and a preparation method thereof. Background technique [0002] Molybdenum selenide is a typical transition metal selenium compound. It has a strong Se-Mo-Se covalent bond in the layer and a weak van der Waals force between the layers. Studies have shown that the exposed active edges of molybdenum selenide have hydrogen evolution catalytic activity, so it has a wide range of applications in the field of electrochemical catalysis. However, pure molybdenum selenide is easy to agglomerate, and it preferentially grows the inert inner layer structure instead of the active sheet edge, and a large number of agglomerates further inhibits the exposure of the active edge, coupled with its poor conductivity, pure The excellent properties of molybdenum selenide are often underuti...

Claims

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Application Information

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IPC IPC(8): D06M11/52D01F6/76H01M4/36H01L31/0224D06M101/30
CPCY02E60/10
Inventor 刘天西张龙生樊玮缪月娥张由芳顾华昊
Owner FUDAN UNIV
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