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Electrochromic device (ECD) taking poly 3, 4-ethylenedioxy thiophene and vanadium pentoxide as electrochromism electrode materials and application thereof

A technology for ethylenedioxythiophene and electrochromic devices, which is applied in the fields of instruments, nonlinear optics, optics, etc., can solve the problems of complex electrode process technology, inconspicuous color contrast, poor matching, etc., and achieves obvious color contrast and improved Electrochromic properties, the effect of improving color contrast

Inactive Publication Date: 2014-12-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problem that the vanadium pentoxide prepared by the traditional method exists in the form of powder, and the process of preparing the electrode is complicated; in addition, when the traditional method is used to construct an electrochromic device, the discoloration process of vanadium pentoxide is related to the electrochromic effect of another electrode. The color matching of the color-changing material is poor, resulting in the problem of inconspicuous color contrast, and an electrochromic device using poly-3,4-ethylenedioxythiophene and vanadium pentoxide as electrochromic electrode materials and its application are provided

Method used

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  • Electrochromic device (ECD) taking poly 3, 4-ethylenedioxy thiophene and vanadium pentoxide as electrochromism electrode materials and application thereof
  • Electrochromic device (ECD) taking poly 3, 4-ethylenedioxy thiophene and vanadium pentoxide as electrochromism electrode materials and application thereof
  • Electrochromic device (ECD) taking poly 3, 4-ethylenedioxy thiophene and vanadium pentoxide as electrochromism electrode materials and application thereof

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specific Embodiment approach 1

[0013] Specific Embodiment 1: In this embodiment, an electrochromic device using poly-3,4-ethylenedioxythiophene and vanadium pentoxide as electrochromic electrode materials includes: a working electrode, a counter electrode and an electrolyte layer, wherein, The working electrode is composed of a transparent conductive FTO glass substrate and a vanadium pentoxide film deposited on it; the counter electrode is composed of a transparent conductive FTO glass substrate and a poly 3,4-ethylenedioxythiophene film deposited on it; the electrolyte layer Between the working electrode and the counter electrode.

[0014] In this embodiment, a polystyrene colloidal crystal is used as a template to prepare a vanadium pentoxide film with a three-dimensional ordered macroporous structure, which is directly grown on the surface of the transparent conductive glass. In addition, the three-dimensional ordered macroporous structure greatly improves the electrochromic performance of vanadium pent...

specific Embodiment approach 2

[0015] Embodiment 2: This embodiment differs from Embodiment 1 in that: the vanadium pentoxide thin film is prepared by using polystyrene colloidal crystals as templates. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0016] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the preparation method of vanadium pentoxide film is as follows:

[0017] 1. Use acetone, methanol and ultrapure water to clean the FTO glass ultrasonically, and then put it into a constant temperature static incubator. Control the mass concentration of polystyrene beads to 0.16%, and the constant temperature is 60°C. React for 3 days , to obtain a colloidal crystal template;

[0018] 2. Using the colloidal crystal obtained in step 1 as a template, anodic deposition is filled with vanadium pentoxide, the concentration of vanadyl sulfate is 0.2mol / L, the concentration of sodium perchlorate is 0.25mol / L, and the reference electrode is saturated silver / chloride Silver electrode, the electrodeposition voltage is 1.5V, and the electrodeposition time is 40 seconds to obtain a thin film;

[0019] 3. Put the film obtained in step 2 into tetrahydrofuran, let it stand for 12 ...

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Abstract

The invention provides an electrochromic device (ECD) taking poly 3, 4-ethylenedioxy thiophene and vanadium pentoxide as electrochromism electrode materials and application thereof, relates to the technical field of ECDs and aims to solve the problems of complex technology in electrode preparation, poor matching of the vanadium pentoxide and the color of the other electrochromic electrode material, and unconspicuous color contrast during the allochoric process. The ECD comprises a working electrode, a counter electrode and an electrolyte layer, wherein the working electrode is composed of a transparent conductive FTO glass substrate and a vanadium pentoxide film deposited on the FTO glass substrate; the counter electrode is composed of another transparent conductive FTO glass substrate and a poly 3, 4-ethylenedioxy thiophene film deposited on the corresponding FTO glass substrate; the electrolyte layer is positioned between the working electrode and the counter electrode. The ECD is simple in technology and obvious in color contrast during application and can be applied to intelligent windows and display devices of buildings.

Description

technical field [0001] The invention relates to the technical field of electrochromic devices, in particular to an electrochromic device using poly-3,4-ethylenedioxythiophene and vanadium pentoxide as electrochromic electrode materials and its application. Background technique [0002] Electrochromism refers to the phenomenon that the optical properties of materials (reflectivity, transmittance, absorptivity, etc.) undergo stable and reversible chemical changes under the action of an external electric field, which is manifested as reversible changes in color or transparency in appearance. Materials with electrochromic properties are called electrochromic materials, and devices with controllable color-changing functions prepared from such materials are called smart or electrochromic devices (electrochromic devices, ECDs). Because it can change its reflectivity, transmittance, and absorptivity under an external electric field, the electrochromic device can selectively adjust t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/155
Inventor 李垚童仲秋赵九蓬王晶王艺
Owner HARBIN INST OF TECH
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