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Preparation method of porous NiO electrochromic film

An electrochromic and thin-film technology, applied in the direction of coating, etc., can solve the problems of hindering popularization and application, long response time, etc., and achieve the effects of uniform pore distribution, reduced response time, and large specific surface area

Inactive Publication Date: 2018-02-09
上海艾谡新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with organic electrochromic materials, inorganic electrochromic materials still have the disadvantage of longer response time, which hinders their popularization and application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Prepare 150nm polystyrene colloidal spheres, measure a certain amount of dehydrated alcohol and n-butanol (V 无水乙醇 :V 正丁醇 =2:1), according to the concentration of 0.2mol / L, take a certain amount of anhydrous nickel acetate and add it to the solution, stir at 60°C (condensing and refluxing), add ammonia water (25% to 28%) dropwise after 1.5h until the solution is sol After continuing the reaction for 4 h, it was aged at room temperature for 12 h to form Sol A.

[0014] (2) ultrasonically disperse the synthesized polystyrene nanospheres and submicron colloidal spheres in absolute ethanol (the amount used is the same as the volume of absolute ethanol in the second step), and then add the polystyrene suspension to the second step In the second-step sol A, wherein the mass fraction of polystyrene colloidal sphere particles is 3%, ultrasonically disperse for 2 hours to obtain a composite suspension.

[0015] (3) Wash and dry the ITO glass, place it vertically in the comp...

Embodiment 2

[0018] ((1) prepare 300nm polystyrene colloidal ball, measure a certain amount of dehydrated alcohol and n-butanol (V 无水乙醇 :V 正丁醇 =3:1), according to the concentration of 0.23mol / L, take a certain amount of anhydrous nickel acetate and add it to the solution, stir at 70°C (condensation and reflux), add ammonia water (25% to 28%) dropwise after 1h until the solution is gelled , after continuing to react for 3h, aged at room temperature for 15h to form Sol A.

[0019] (2) ultrasonically disperse the synthesized polystyrene nanospheres and submicron colloidal spheres in absolute ethanol (the amount used is the same as the volume of absolute ethanol in the second step), and then add the polystyrene suspension to the second step In the second-step sol A, the mass fraction of polystyrene colloidal sphere particles is 2.5%, and ultrasonically dispersed for 2 hours to obtain a composite suspension.

[0020] (3) Wash and dry the ITO glass, place it vertically in the composite suspens...

Embodiment 3

[0023] (1) Prepare 500nm polystyrene colloidal spheres, measure a certain amount of dehydrated alcohol and n-butanol (V 无水乙醇 :V 正丁醇 =3.5:1), according to the concentration of 0.3mol / L, take a certain amount of anhydrous nickel acetate and add it to the solution, stir at 80°C (condensing and refluxing), add ammonia water (25% to 28%) dropwise after 1h until the solution is gelled , continue to react for 2.5h and then age at room temperature for 20h to form Sol A.

[0024] (2) ultrasonically disperse the synthesized polystyrene nanospheres and submicron colloidal spheres in absolute ethanol (the amount used is the same as the volume of absolute ethanol in the second step), and then add the polystyrene suspension to the second step In the second-step sol A, in which the mass fraction of polystyrene colloidal sphere particles is 4%, ultrasonic dispersion is performed for 3 hours to obtain a composite suspension.

[0025] (3) Wash and dry the ITO glass, place it vertically in the...

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Abstract

The invention discloses a preparation method of a porous NiO electrochromic film, which comprises the following steps: preparing polystyrene nanospheres and submicron colloidal spheres; measuring a certain amount of absolute ethyl alcohol and n-butyl alcohol according to a volume ratio being 2-4:1 to obtain a solution, measuring a certain amount of anhydrous nickel acetate with concentration being0.2-0.3 mol / L and adding the anhydrous nickel acetate in the solution, stirring the materials at the temperature of 60-80 DEG C, after 1-1.5 h, adding ammoniacal liquor with the concentration being 25-28% drop by drop until the solution is subjected to solation, continuously reacting the materials for 2-4 h and aging the materials at room temperature for 12-20 h to form a sol A; performing ultrasonic dispersion on the synthesized polystyrene nanospheres and submicron colloidal spheres in absolute ethyl alcohol, adding a polystyrene fluid suspension in the sol A in the step 2), and performingultrasonic dispersion for 2-3 h to obtain a composite fluid suspension; cleaning ITO glass and drying the ITO glass, vertically placing the material in the composite fluid suspension, performing standing, after complete evaporation, growing a composite film layer on an ITO substrate; and calcining the composite film layer for 2-3 h at the temperature of 400-550 DEG C under air atmosphere to obtainthe porous NiO electrochromic film.

Description

technical field [0001] The invention relates to a preparation method of an electrochromic thin film, in particular to a preparation method of a porous NiO electrochromic thin film. Background technique [0002] Electrochromic materials are mainly divided into two categories: organic electrochromic materials and inorganic electrochromic materials. Inorganic electrochromic materials are favored by researchers for their good weather resistance, high chemical stability, and long life. However, compared with organic electrochromic materials, inorganic electrochromic materials still have the disadvantage of longer response time, which hinders their popularization and application. As a kind of inorganic electrochromic material, the problem of response time is also the focus of NiO electrochromic thin film material research. How to effectively improve the response time of NiO electrochromic thin film is the key to its popularization and application. Contents of the invention [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/27
CPCC03C17/27C03C2217/217
Inventor 伍媛婷仝小飞
Owner 上海艾谡新材料有限公司
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