High-performance electrochromic capacitor bifunctional device and manufacturing method thereof

An electrochromic and capacitor technology, applied in instruments, nonlinear optics, optics, etc., can solve the problems of insignificant color change during charging and discharging, poor cycle stability, etc., and achieve the effect of high specific capacitance and high color contrast

Active Publication Date: 2019-04-30
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, such devices need to use acidic electrolytes, which have disadvantages such as poor cycle stability and insignificant color changes during charging and discharging.

Method used

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  • High-performance electrochromic capacitor bifunctional device and manufacturing method thereof
  • High-performance electrochromic capacitor bifunctional device and manufacturing method thereof
  • High-performance electrochromic capacitor bifunctional device and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Preparation method

[0038] 1. Preparation of working electrode:

[0039] Sequentially add 0.3g FeCl 3 ·6H 2 O, 0.2g polyoxypropylene polyoxyethylene copolymer (molecular weight 2800g mol -1 ) and 0.05g 3,4-(2',2'-bis(bromomethyl)propylenedioxythiophene (structural formula such as Figure 2a shown) were dissolved in 0.8 g butanol and sonicated for 5 min at room temperature. Then, the resulting mixed solution was filtered through a hydrophilic syringe filter, and evenly coated on the ITO conductive glass substrate by the spin coating method, and the rotation speed was controlled to be 1000rpm and the spin coating time was 10s to obtain a 180nm thick polymer film. Wash off residual FeCl with ethanol 3 After blowing dry with nitrogen, the FTO conductive glass loaded with polymer film (PR-Br) was obtained as the working electrode.

[0040] 2. Production of the counter electrode:

[0041] 2.1) Using commercial TiO 2 Slurry (purchased from Greatcell company, speci...

Embodiment 2

[0048] (1) Preparation method

[0049] 1. Preparation of working electrode:

[0050] Sequentially add 0.3g FeCl 3 ·6H 2 O, 0.2g polyoxypropylene polyoxyethylene copolymer (molecular weight 2800g mol -1 ) and 0.05g 3,4-(2',2'-bis(bromomethyl)propylenedioxythiophene (structural formula such as Figure 2a shown) were dissolved in 0.8 g butanol and sonicated for 5 min at room temperature. Then, the resulting mixed solution was filtered through a hydrophilic syringe filter, and evenly coated on the ITO conductive glass substrate by the spin coating method. The control rotation speed was 1100rpm and the spin coating time was 10s to obtain a 175nm thick polymer film. Wash off residual FeCl with ethanol 3 After blowing dry with nitrogen, the ITO conductive glass loaded with polymer film (PR-Br) was obtained as the working electrode.

[0051] 2. Production of the counter electrode:

[0052] 2.1) Using commercial TiO 2 Slurry (purchased from Greatcell company, specification: TiO...

Embodiment 3

[0059] (1) Preparation method

[0060] 1. Preparation of working electrode:

[0061] Sequentially add 0.3g FeCl 3 ·6H 2 O, 0.2g polyoxypropylene polyoxyethylene copolymer (molecular weight 2800g mol -1 ) and 0.05g 3,4-(2',2'-bis(bromomethyl)propylenedioxythiophene (structural formula such as Figure 2a shown) were dissolved in 0.8 g butanol and sonicated for 5 min at room temperature. Then, the resulting mixed solution was filtered through a hydrophilic syringe filter, and evenly coated on the ITO conductive glass substrate by the spin coating method. The rotation speed was controlled to 1400 rpm and the spin coating time was 10s to obtain a 160nm thick polymer film. Wash off residual FeCl with ethanol 3 After blowing dry with nitrogen, the ITO conductive glass loaded with polymer film (PR-Br) was obtained as the working electrode.

[0062] 2. Preparation of counter electrode:

[0063] 2.1) Using commercial TiO 2 Slurry (purchased from Greatcell company, specification:...

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Abstract

The invention relates to a high-performance electrochromic capacitor bifunctional device and a manufacturing method thereof. According to the technical scheme, the electrochromic capacitor bifunctional device is of a sandwich structure formed by taking conductive glass loaded with a polymer coating as a working electrode, liquid ionic liquid as an electrolyte and conductive glass loaded with a PW12-TiO2 composite film as a counter electrode. According to the invention, the PW12-TiO2 composite film with oxidation-reduction activity is used as a counter electrode of a conjugated polymer-based electrochromic device; under the condition that non-aqueous and non-acidic electrolytes are used, the characteristics of double stability, high color contrast and high specific capacitance are achieved;the charge storage amount in the device can be judged through the external color of the device because of color change in the charging and discharging process, and the method is a novel method for manufacturing the high-performance electrochromic capacitor bifunctional device.

Description

technical field [0001] The invention relates to the display field, in particular to a multifunctional electrochromic capacitor device and a manufacturing method thereof. Background technique [0002] A commonly used standard structure for electrochromic devices is a battery-like sandwich structure in which multiple types of materials are integrated. Its working process usually includes the following two steps: (1) Apply a forward voltage between the two transparent electrode layers, under the action of a forward electric field, the active ions in the electrolyte layer are injected into the color-changing layer, causing the color-changing layer to undergo a coloring process; ( 2) A reverse voltage is applied between the two transparent electrode layers. Under the action of the reverse electric field, active ions are extracted from the color-changing layer, causing the color-changing layer to fade. The electrochromic-capacitor dual-function device also has the function that w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/155G02F1/1516G02F1/1506
CPCG02F1/15G02F1/1506G02F1/155
Inventor 王诗铭王玉好
Owner LIAONING UNIVERSITY
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