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Self-powered tungsten oxide-based electrochromic device based on aluminum ion hydrogel and its preparation method

An electrochromic device and electrochromic technology, which are applied in the fields of instruments, nonlinear optics, optics, etc., can solve the problems of complex structure, increase interface transmission and industrial manufacturing cost, and achieve simple preparation methods, easy implementation, and large scale. Effects of light modulation range

Active Publication Date: 2021-01-15
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the structure of electrochromic devices is relatively complex, which increases interface transmission and industrial manufacturing costs

Method used

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  • Self-powered tungsten oxide-based electrochromic device based on aluminum ion hydrogel and its preparation method
  • Self-powered tungsten oxide-based electrochromic device based on aluminum ion hydrogel and its preparation method
  • Self-powered tungsten oxide-based electrochromic device based on aluminum ion hydrogel and its preparation method

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preparation example Construction

[0040] The preparation method of the self-powered tungsten oxide-based electrochromic device based on aluminum ion hydrogel of the present invention comprises the following steps:

[0041] 1) Clean the FTO conductive glass and dry it;

[0042] 2) Preparing a precursor sol composed of tungsten oxide and molybdenum oxide;

[0043] 3) Using the sol-gel spin-coating method, spin-coat the precursor sol compounded with tungsten oxide and molybdenum oxide on the FTO conductive glass, form a film, and then perform annealing treatment to obtain a transparent tungsten oxide-based electrochromic film;

[0044] 4) preparing polyacrylamide hydrogel;

[0045] 5) Soak the polyacrylamide hydrogel in the aluminum chloride solution to obtain the aluminum chloride hydrogel;

[0046] 6) encapsulating the aluminum chloride hydrogel with the transparent tungsten oxide-based electrochromic film obtained in step 3) through ordinary glass adhered to aluminum electrodes, to obtain an electrochromic s...

Embodiment 1

[0064] The preparation method of the self-powered tungsten oxide-based electrochromic device based on aluminum ion hydrogel of the present invention comprises the following steps:

[0065] 1) Clean the FTO conductive glass and dry it;

[0066] 2) Preparing a precursor sol composed of tungsten oxide and molybdenum oxide;

[0067] 3) Using the sol-gel spin-coating method, spin-coat the precursor sol compounded with tungsten oxide and molybdenum oxide on the FTO conductive glass, form a film, and then perform annealing treatment to obtain a transparent tungsten oxide-based electrochromic film;

[0068] 4) preparing polyacrylamide hydrogel;

[0069] 5) Soak the polyacrylamide hydrogel in the aluminum chloride solution to obtain the aluminum chloride hydrogel;

[0070] 6) encapsulating the aluminum chloride hydrogel with the transparent tungsten oxide-based electrochromic film obtained in step 3) through ordinary glass adhered to aluminum electrodes, to obtain an electrochromic s...

Embodiment 2

[0086] The preparation method of the self-powered tungsten oxide-based electrochromic device based on aluminum ion hydrogel of the present invention comprises the following steps:

[0087] 1) Clean the FTO conductive glass and dry it;

[0088] 2) Preparing a precursor sol composed of tungsten oxide and molybdenum oxide;

[0089] 3) Using the sol-gel spin-coating method, spin-coat the precursor sol compounded with tungsten oxide and molybdenum oxide on the FTO conductive glass, form a film, and then perform annealing treatment to obtain a transparent tungsten oxide-based electrochromic film;

[0090] 4) preparing polyacrylamide hydrogel;

[0091] 5) Soak the polyacrylamide hydrogel in the aluminum chloride solution to obtain the aluminum chloride hydrogel;

[0092] 6) encapsulating the aluminum chloride hydrogel with the transparent tungsten oxide-based electrochromic film obtained in step 3) through ordinary glass adhered to aluminum electrodes, to obtain an electrochromic s...

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Abstract

The invention relates to a self-powered tungsten-oxide-based electrochromic device based on aluminum ion hydrogel and a preparation method thereof. The method comprises the following steps: step one,cleaning FTO conductive glass and drying the cleaned glass; step two, preparing a precursor sol with combination of tungsten oxide and molybdenum oxide; step three, on the basis of a sol-gel spin coating method, coating the FTO conductive glass with a precursor sol with combination of tungsten oxide and molybdenum oxide, forming a film, and carrying out annealing processing to obtain a transparenttungsten-oxide-based electrochromic film; step four, preparing a polyacrylamide hydrogel; step five, immersing the olyacrylamide hydrogel into an aluminium chloride solution to obtain aluminium chloride hydrogel; step six, packaging the aluminium chloride hydrogel and the transparent tungsten-oxide-based electrochromic film obtained in the step three by using a piece of common glass with an aluminum electrode attached to obtain an electrochromic smart window device; and step seven, connecting a hydrogel pen with the transparent tungsten-oxide-based electrochromic film obtained in the step three to obtain a non-voltage-driving rewritable ion writing screen. The preparation method is simple and is easy to implement.

Description

technical field [0001] The invention relates to the field of smart window technology and ion screen display technology, in particular to a self-powered tungsten oxide-based electrochromic device based on aluminum ion hydrogel and a preparation method thereof. Background technique [0002] Electrochromism refers to the permanent and reversible change of the optical properties (absorption, transmittance or reflectance) of a substance through an electrochemical reaction driven by an electric field, and then shows reversible changes in color and transparency. Electrochromic devices have great application prospects in the field of optoelectronics because of the characteristics of reversible regulation of the transmittance of visible light and infrared light according to people's wishes. Electrochromic devices can play the role of saving energy and displaying buildings, so they can be used as electrochromic smart windows, anti-glare rearview mirrors, electrochromic displays and ot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1524G02F1/163G02F1/155G02F1/15
CPCG02F1/15G02F1/155G02F1/163G02F1/1524
Inventor 方华靖武文婷汪宏
Owner XI AN JIAOTONG UNIV
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