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Preparation method of WO3 electrochromic device for automobile film

A technology for electrochromic devices and automotive film, applied in instruments, nonlinear optics, optics, etc., can solve problems such as worrying quality problems, toxic gas harming the health of car owners, and inability to achieve full-featured protection.

Inactive Publication Date: 2018-01-09
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many domestic films use ordinary dyed polyester films. Although the price is low, the quality problem is worrying. It cannot achieve full-function protection, not only cannot resist ultraviolet and infrared heat insulation, but also decomposes and ages under strong sunlight. Some also produce toxic gas that endangers the health of car owners.
Although the performance of the imported film is very good, it can achieve full-function protection, but the price is very expensive. It takes several thousand yuan to cover all the windows of a car, and it cannot achieve the function of human beings to intelligently adjust visible light and infrared light according to environmental needs.

Method used

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  • Preparation method of WO3 electrochromic device for automobile film
  • Preparation method of WO3 electrochromic device for automobile film
  • Preparation method of WO3 electrochromic device for automobile film

Examples

Experimental program
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Effect test

Embodiment 1

[0024] 1) Preparation of electrodeposited WO 3 Precursor solution of electrochromic film: react tungsten powder with hydrogen peroxide to prepare electrodeposited WO 3 Thin film precursor solution, then dilute the prepared solution with absolute ethanol and acetic acid and adjust the pH value.

[0025] 2). Deposit WO on ITO / PET substrate 3 Electrochromic thin films: deposited by potentiostat three-electrode system. Select the deposition mode as constant current, and the minimum deposition current density is about 1mA / cm 2 , the deposition time is 300s. At the same time choose to use 5×5cm 2 Electrochromic WO 3Taking the thin film as an example, a graphite electrode of the same size is selected as the counter electrode. Using ITO / PET as the working electrode, the working electrode and the counter electrode are arranged in parallel and symmetrically. At the same time choose Ag / KCl as the reference electrode.

[0026] 3). Dry the deposited film at 80° C. for 5 hours, and ...

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Abstract

The invention provides a preparation method of a WO3 electrochromic device for an automobile film, and belongs to the field of technical application of functional materials. LiClO4 is dissolved in a PC+PMMA system to obtain gel as an electrolyte, ITO / PET provided with an electrochromic film through deposition is used as an electrochromic structure layer, empty ITO / PET is used as an electricity layer, and through vacuum heat treatment, a stable and solidified electrochromic device is formed. The edge of the device is sealed through plastic package glue, the stability of each material in the internal structure is kept, and the service life of the device is prolonged.

Description

technical field [0001] The invention relates to electrochromic WO for automotive film application 3 The device preparation method belongs to the technical application field of functional materials. Background technique [0002] The sun is the main heat source of the earth, bringing light and heat to the earth in the form of electromagnetic radiation. Due to the existence of the ozone layer in the surface atmosphere, the wavelengths of solar radiant energy that can be received on the earth are mainly distributed in the range of 250-2500nm, and the radiant energy in the ultraviolet region of 250-400nm accounts for a small part of the total energy received by the surface of the sun. The radiant energy in the visible light region of 400-720nm accounts for about 45%, and the radiant energy in the near-infrared light region of 720-2500nm also accounts for about 45%. The energy distribution is mostly located in the middle and far infrared region (2500-20000nm). As a glass invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/15
Inventor 汪浩周开岭刘晶冰严辉
Owner BEIJING UNIV OF TECH
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