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A high-performance electrochromic capacitor dual-function device and its manufacturing method

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: 2021-06-01
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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  • A high-performance electrochromic capacitor dual-function device and its manufacturing method
  • A high-performance electrochromic capacitor dual-function device and its manufacturing method
  • A high-performance electrochromic capacitor dual-function device and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Preparation method

[0038] 1. Fabrication of working electrode:

[0039] In turn, 0.3 g FeCl 3 ·6H 2 O, 0.2g polyoxypropylene polyoxyethylene copolymer (molecular weight 2800g mol -1 ) and 0.05g 3,4-(2',2'-bis(bromomethyl)propylenedioxy)thiophene (structural formula such as Figure 2a shown) was dissolved in 0.8 g butanol and sonicated for 5 min at room temperature. Then, the obtained mixed solution was filtered through a hydrophilic syringe filter, and uniformly coated on the ITO conductive glass substrate by spin coating method. Wash off residual FeCl with ethanol 3 After drying with nitrogen, the FTO conductive glass loaded with polymer film (PR-Br) was obtained as the working electrode.

[0040] 2. Production of counter electrode:

[0041] 2.1) Using commercial TiO 2 Slurry (purchased from Greatcell, specification: TiO 2 particle size 18nm). The purchased TiO was treated with ethanol 2The slurry was diluted into a suspension with a mass fraction of 2...

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)propylenedioxy)thiophene (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: Ti...

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)propylenedioxy)thiophene (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 drying 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: TiO...

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Abstract

The invention relates to a high-performance electrochromic capacitor dual-function device and a manufacturing method thereof. The technical solution adopted is: the dual-function device of the electrochromic capacitor uses conductive glass loaded with a polymer coating as the working electrode, the liquid ionic liquid as the electrolyte, and the loaded dodecatungstophosphoric acid-titanium dioxide (PW 12 -TiO 2 ) The conductive glass of the composite film is used as the "sandwich" sandwich structure composed of the counter electrode. The present invention utilizes redox active PW 12 -TiO 2 As the counter electrode of the conjugated polymer-based electrochromic device, the composite film has the characteristics of bistability, high color contrast, and high specific capacitance when using non-aqueous and non-acidic electrolytes. The charge and discharge process is accompanied by color changes. The charge storage amount in the device can be judged by the external color of the device, which is a new method for making a high-performance electrochromic capacitor dual-function device.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(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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