Two-dimensional inorganic material capacitor based on ink-jet printing and preparation method thereof
An inkjet printer and inorganic material technology, applied in the field of two-dimensional inorganic material capacitors based on inkjet printing and their preparation, can solve the problems of low dielectric constant and low charge density of capacitors, and achieve high flexibility and ink dispersibility. Good, efficiency-enhancing effect
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[0030] The embodiment of the present invention provides a preparation method of a two-dimensional inorganic material capacitor based on inkjet printing, and the specific steps include:
[0031] S1. Preparation of two-dimensional inorganic material ink: Mix the solvent, binder and surfactant uniformly to obtain a varnish, then disperse the two-dimensional inorganic material obtained by liquid phase exfoliation in the varnish, and stir evenly to obtain a two-dimensional inorganic material ink ;
[0032] S2. Adjustment of inkjet printing parameters: set the parameters of inkjet printing, including printing frequency, nozzle temperature, droplet spacing, and spacing between nozzle and substrate;
[0033] S3. Preparation of capacitors: The conductive ink and the two-dimensional inorganic material ink are placed in the ink cartridges of the inkjet printer respectively. According to the design pattern, the conductive ink is used to print the lower electrode and the upper electrode, a...
Embodiment 1
[0049] This embodiment provides a preparation method of a two-dimensional inorganic material capacitor based on inkjet printing, which mainly includes the following steps:
[0050] (1) Weigh 1g HCa 2 Nb 3 O 10 ·nH 2 The O powder was added to the prepared 250 mL tetrabutylammonium hydroxide aqueous solution, and the nanosheet aqueous solution was obtained by peeling off by mechanical shaking for 7 days. Take an appropriate amount of the solution into a centrifuge tube, and centrifuge at 4000 rpm for 30 minutes to remove the precipitate and absorb three minutes. The second supernatant is about 30 mL for use, and the two-dimensional inorganic material can be obtained after the supernatant is centrifuged.
[0051] (2) Stir and mix 10 mL ultrapure water, 4 mL propylene glycol, 4 mg xanthan gum powder and 2.4 mg Triton X-100 to obtain a varnish, and add the two-dimensional inorganic material to the varnish and stir to obtain a two-dimensional inorganic material ink , that is, Ca...
Embodiment 2
[0057] This embodiment provides a preparation method of a two-dimensional inorganic material capacitor based on inkjet printing, which mainly includes the following steps:
[0058] (1) Weigh 1g HCa 2 NaNb 4 O 13 ·nH 2 O powder was added to the prepared 250mL aqueous solution of tetrabutylammonium hydroxide, and ultrasonic peeling was carried out. The ultrasonic power was 560W, and the ultrasonic time was 30 minutes. In order to avoid nozzle blockage, the ultrasonic power was strictly controlled in this example. Ca 2 NaNb 4 O 13 The size of the nanosheets is below 400 nm. The sonicated solution was centrifuged at 3000 rpm for 40 min to remove the precipitate, and the supernatant was freeze-dried for 24 h to obtain a two-dimensional inorganic material of flocculent powder.
[0059] (2) Stir and mix 10 mL of ultrapure water and 20 mL of ethanol to obtain a varnish, weigh 30 mg of two-dimensional inorganic material, add it to the varnish, and stir for 10 min to obtain Ca 2...
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