Preparation method and application of metal organic framework/polyaniline composite material
A technology of metal-organic frameworks and composite materials, which is applied in the field of preparation of metal-organic frameworks/polyaniline composite materials, can solve the problems of poor stability of composite materials, cycle performance needs to be improved, etc., to achieve improved electrochemical activity and simple and reliable synthesis method control effect
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Embodiment 1
[0034] A kind of preparation method of metal organic framework / polyaniline composite material, carry out according to the following steps:
[0035] S1: Add 1.5 mL of aniline monomer to the first solvent composed of 30 mL of deionized water / N,N-dimethylformamide, and add 0.5 g of N-methylpyrrolidone, and ultrasonically disperse for 5 minutes to obtain a solution Liquid A and transferred to the constant pressure titration funnel;
[0036] S2: Dissolve a certain amount of ammonium persulfate (the molar ratio to aniline monomer is 1.2:1) in deionized water (ie, the second solvent), adjust the pH of the solution to 1-3 with hydrochloric acid, and disperse ultrasonically for 5 min After that, a solution B liquid is formed;
[0037] S3: Transfer solution B to a three-necked flask, place the three-necked flask in an ice bath environment (ice bath temperature is 0 ℃) and stir (stirring speed is 250 r / min), and at the same time, dissolve solution A at 40- Drop it into a three-necked f...
Embodiment 2
[0043] A kind of preparation method of metal organic framework / polyaniline composite material is carried out according to the following steps:
[0044] S1: Dissolve 40 mmol of manganese acetate in 20 mL of deionized water and transfer to a three-necked flask;
[0045] S2: 20 mmol of 2,5-dihydroxyterephthalic acid was dissolved in 1 M sodium hydroxide solution, and dropped into a three-necked flask under stirring, and reacted at room temperature for 5 h;
[0046] S3: Add 1.5 mL of aniline monomer to 30 mL of deionized water / N,N-dimethylformamide solution, and add 0.5 g of N-methylpyrrolidone, and ultrasonically disperse for 5 minutes, and transfer to a three-necked flask ;
[0047] S4: Dissolve a certain amount of ammonium persulfate (the molar ratio to aniline monomer is 1.2:1) in deionized water, adjust the pH of the solution to 1-3 with hydrochloric acid, disperse ultrasonically for 5 minutes, and then transfer to constant pressure titration In the funnel, drop it into a t...
Embodiment 3
[0052] A positive electrode of zinc ion battery
[0053] Under normal temperature and pressure, 0.02 g of conductive carbon black was added to 1 g of 2 wt % polyvinylidene fluoride in N-methylpyrrolidone solution to obtain a mixed solution. After stirring for 30 minutes, add 0.16 g of the metal-organic framework / polyaniline composite material prepared in Example 1 (active material, conductive carbon black, and PVDF in a mass ratio of 8:1:1) to the above mixture, and stir for another 6 hours to obtain a mixed solution. Uniform cathode slurry. The resulting slurry was uniformly coated on the surface of a titanium foil with a thickness of 10 um. Dry the coated titanium foil at 80°C and cut it into small discs with a diameter of 15mm, which can be used as the positive electrode of the zinc ion battery.
[0054] A 2032-type button battery using the positive electrode of the above-mentioned zinc ion battery.
[0055] Cut the 0.1mm thick zinc foil into 15mm small discs as the batt...
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