Tungsten disulfide/carbon nanofiber/graphene composite material and preparation method thereof
A carbon nanofiber and graphene composite technology, which is applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem that the excellent properties of pure tungsten disulfide cannot be fully utilized, poor conductivity, etc. problem, to achieve the effect of ingenious experimental design, good flexibility and easy operation
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[0035] Example 1, This embodiment includes the following steps:
[0036] (1) Add 1g of polyacrylonitrile powder to 5mL N,N- Stir continuously in the dimethylformamide solvent to prepare a uniform viscous dispersion;
[0037] (2) Electrospin the obtained polyacrylonitrile dispersion, and the adjustment process parameters are: electrostatic field voltage 20kV, spinning speed 0.3mmmin -1 , The receiving distance is 20cm, and the polyacrylonitrile nanofiber membrane is prepared;
[0038] (3) Pre-oxidize the obtained polyacrylonitrile spun membrane in an air atmosphere, the pre-oxidation temperature is 250℃, and the heating rate is 1℃min -1 , The pre-oxidation time is 1.5h, and the pre-oxidized polyacrylonitrile nanofiber membrane is prepared;
[0039] (4) Put the obtained pre-oxidized polyacrylonitrile nanofiber membrane in 1mgmL -1 Soak in graphene oxide solution for 24 hours to prepare polyacrylonitrile nanofiber / graphene oxide composite film;
[0040] (5) The obtained polyacrylonitrile ...
Example Embodiment
[0044] Example 2, The mass of ammonium thiotungstate in Example 1 is changed to 10 mg, and the rest are the same as in Example 1. The final composite material obtained is denoted as WS 2 / CNF / G-2. Implementation results: Tungsten disulfide nanosheets are uniformly grown on carbon nanofibers / graphene; and WS 2 / CNF / G-1, WS 2 The tungsten disulfide nanosheets in / CNF / G-2 have smaller lamellae and less content.
Example Embodiment
[0045] Example 3. The mass of ammonium thiotungstate in Example 1 is changed to 30 mg, and the rest are the same as in Example 1. The final composite material obtained is denoted as WS 2 / CNF / G-3. Implementation results: Tungsten disulfide nanosheets are uniformly grown on carbon nanofibers / graphene; and WS 2 / CNF / G-1, WS 2 The tungsten disulfide nanosheets in / CNF / G-3 have larger lamellae, more content, and a small amount of tungsten disulfide agglomerates.
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