Preparation method of carbon nanofiber electrode material based on MOFs derived metal oxide
A carbon nanofiber, electrode material technology, applied in the direction of active material electrodes, negative electrodes, battery electrodes, etc., can solve the problem of not taking into account the easy agglomeration of MOFs particles, and achieve an improved reversible specific capacity, easy operation, and environmental friendliness. Effect
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[0026] Example 1
[0027] A preparation method based on MOFs-derived metal oxide carbon nanofiber electrode material includes the following steps:
[0028] Step 1: Weigh 1.1158g zinc nitrate and dissolve it in 30mL methanol, weigh 1.2337g 2-methylimidazole and dissolve it in 30mL methanol, then mix the two solutions and stir for 10-30min to form a white suspension. Finally, it was allowed to stand and age for 24 hours at room temperature, then centrifuged, washed several times with methanol and deionized water, and dried under vacuum at 70°C to obtain ZIF-8 nanoparticles with a particle size of 100-120 nm;
[0029] Step 2: Weigh 0.3g of ZIF-8 nanoparticles and ultrasonically disperse them in 6mL of DMF solution, then add 0.4g of PAN fiber, stir at 70℃ for 5h to form a spinning precursor solution, and then spin the precursor The solution was transferred to a 10mL syringe for electrostatic spinning. The current collector was copper foil. After spinning, a ZIF-8@PAN precursor film was ...
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[0035] Example 2
[0036] A preparation method based on MOFs-derived metal oxide carbon nanofiber electrode material includes the following steps:
[0037] Step 1: Weigh 1.1158g zinc nitrate dissolved in 30mL methanol, weigh 1.2337g 2-methylimidazole and dissolve in 30mL methanol, then mix the two solutions and stir for 10-30min to form a white suspension. Finally, it was allowed to stand and age for 24 hours at room temperature, then centrifuged, washed with methanol and deionized water several times, and vacuum dried at 70°C to obtain ZIF-8 nanoparticles with a particle size of 100-120nm;
[0038] Step 2: Weigh 0.4g of ZIF-8 nanoparticles and ultrasonically disperse them in 6mL of DMF solution, then add 0.48g of PAN fiber, stir at 70℃ for 5h to form a spinning precursor solution, and then spin the precursor The solution was transferred to a 10mL syringe for electrostatic spinning. The current collector was copper foil. After spinning, a ZIF-8@PAN precursor film was formed, which w...
Example Embodiment
[0044] Example 3
[0045] A preparation method based on MOFs-derived metal oxide carbon nanofiber electrode material includes the following steps:
[0046] Step 1: Weigh 0.748g of ferric chloride and 0.46g of terephthalic acid in 60mL of DMF solution, stir for 20-30 minutes to obtain a mixed solution; then place the mixed solution on a polytetrafluoroethylene lining Heated to 120℃ in the hydrothermal reaction kettle, kept for 2h, then cooled to room temperature, and centrifuged at 8000r / min. Finally, it was washed repeatedly with DMF and absolute ethanol, and vacuum dried at 70℃ for 12h. Obtain MIL-88 nanoparticles with a particle size of 600-700 nm;
[0047] Step 2: Weigh 0.3g of MIL-88 nanoparticles and ultrasonically disperse them in 6mL of DMF solution, then add 0.4g of PAN fiber, and stir at 70℃ for 5h to form a spinning precursor solution; the spinning precursor solution Transfer to a 10mL syringe for electrospinning. The current collector is copper foil. After spinning, a MI...
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