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Preparation method of inorganic base electrochromic composite film

An electrochromic and composite film technology, applied in the field of electrochromic film preparation, can solve the problems of unfavorable electrochromic film application, single color, long response time, etc. short effect

Active Publication Date: 2013-07-31
南通通易航天科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic electrochromic film is represented by tungsten oxide film, which has good weather resistance, good stability and long life, but the color is single and the response time is too long, which is not conducive to the application of electrochromic film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing an inorganic-based electrochromic composite film, comprising the following steps:

[0024] The first step is to dissolve ethyl orthosilicate in a part of absolute ethanol to form solution A, and then dissolve ammonia water with a mass concentration of 25% twice the volume of orthosilicate in b part of absolute ethanol Configure solution B, a:b=1:1, then place solution A in a magnetic stirring device, add solution B to solution A under constant stirring, and the concentration of ethyl orthosilicate in the mixed solution is 0.4mol / L, after 20 hours of reaction, the precipitate was separated, washed by centrifugation and dried at 50°C to obtain SiO 2 Nano or submicron spheres;

[0025] In the second step, the prepared submicron SiO 2 Spherical particles are ultrasonically dispersed in water, where SiO 2 The mass fraction of spherical particles is 2%, and the suspension is obtained by ultrasonication for 2 hours;

[0026] The third step is to ver...

Embodiment 2

[0031] A method for preparing an inorganic-based electrochromic composite film, comprising the following steps:

[0032] The first step is to dissolve ethyl orthosilicate in a part of absolute ethanol to form solution A, and then dissolve ammonia water with a mass concentration of 28% that is 5 times the volume of orthosilicate in b part of absolute ethanol Configure solution B, a:b=1:2, then place solution A in a magnetic stirring device, add solution B to solution A under constant stirring, and the concentration of ethyl orthosilicate in the mixed solution is 0.3mol / L, after 20 hours of reaction, the precipitate was separated, washed by centrifugation and dried at 60°C to obtain SiO 2 Nano or submicron spheres;

[0033] In the second step, the prepared submicron SiO 2 Spherical particles are ultrasonically dispersed in ethanol, where SiO 2 The mass fraction of spherical particles is 1%, and the suspension is obtained by ultrasonication for 3 hours;

[0034] The third st...

Embodiment 3

[0039] A method for preparing an inorganic-based electrochromic composite film, comprising the following steps:

[0040] The first step is to dissolve ethyl orthosilicate in a part of absolute ethanol to form solution A, and then dissolve ammonia water with a mass concentration of 25% of the volume of tetraethyl orthosilicate in b part of absolute ethanol Configure solution B, a:b=1:1, then place solution A in a magnetic stirring device, add solution B to solution A under constant stirring, and the concentration of ethyl orthosilicate in the mixed solution is 0.6mol / L, after 20 hours of reaction, the precipitate was separated, washed by centrifugation and dried at 50°C to obtain SiO 2 Nano or submicron spheres;

[0041] In the second step, the prepared submicron SiO 2 Spherical particles are ultrasonically dispersed in methanol, where SiO 2 The mass fraction of spherical particles is 1%, and the suspension is obtained by ultrasonication for 2 hours;

[0042] The third ste...

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Abstract

The invention discloses a preparation method of an inorganic base electrochromic composite film. The preparation method is characterized in that: the prepared inorganic film is a WO3 film, organic dopants comprise aniline / o-phenylenediamine, non-close packed SiO2 colloid crystals is used as a template, the WO3 film is filled into the gaps of the colloid crystals, the SiO2 colloid crystal templateis removed to form a porous film with regular pore arrangement, the porous film is immersed in a prepared organic matter precursor, and drying, lifting and drying are carried out to obtain the inorganic base electrochromic composite film.

Description

technical field [0001] The invention relates to a preparation method of an electrochromic thin film, in particular to a preparation method of an inorganic-based electrochromic composite film. Background technique [0002] Electrochromism refers to the reversible change of color caused by certain materials under the action of an external electric field, and this change is continuously adjustable. Electrochromic devices can achieve reversible color changes under the action of external low-voltage drive, and can be applied in passive display devices, smart color-changing windows, information storage devices and other fields. Electrochromic films can be divided into inorganic electrochromic films (such as WO 3 , NiO 2 、MoO 3 , V 2 o 5 etc.) and organic electrochromic films. Inorganic electrochromic film is represented by tungsten oxide film, which has good weather resistance, good stability and long life, but the color is single and the response time is too long, which is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/23C04B41/50
Inventor 伍媛婷王秀峰
Owner 南通通易航天科技股份有限公司
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