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A kind of electrochromic device and preparation method thereof

A technology of electrochromic devices and electrochromic materials, applied in the fields of instruments, nonlinear optics, optics, etc., can solve the problems of complex preparation process, poor device stability, and inability to manufacture complex shapes, and achieve simple process, large size, The effect of excellent electrochromic performance

Active Publication Date: 2020-08-28
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] When preparing electrochromic devices in the prior art, each electrode needs to be prepared separately and then assembled. The preparation process is complex, and water, oxygen and impurities in the air are easily introduced during the preparation process, resulting in poor stability of the device, and the prepared device Small size, unable to prepare electrochromic devices with complex shapes

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  • A kind of electrochromic device and preparation method thereof
  • A kind of electrochromic device and preparation method thereof
  • A kind of electrochromic device and preparation method thereof

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preparation example Construction

[0031] The invention provides a method for preparing an electrochromic device, comprising the following steps:

[0032] (1) Bonding the conductive substrate and the counter electrode by an adhesive to form a device groove, the closed space between the conductive substrate and the counter electrode not filled with adhesive forms the empty groove of the device groove; the counter electrode is a metal oxide;

[0033] (2) Perform electrochemical polymerization after injecting electroplating solution into the empty groove of the device groove, and form an electroplating film on the surface of the conductive substrate; the electroplating solution contains an electrochromic material;

[0034] (3) Taking out the electroplating solution remaining after the electroplating film is formed in the empty groove of the device groove, and then injecting an electrolyte solution into the empty groove of the device groove to obtain an electrochromic device.

[0035] The present invention has no s...

Embodiment 1

[0050] Plating solution preparation: Dissolve lithium perchlorate (0.1mol / L) and 3,4-(2,2-dimethylpropylenedioxy)thiophene (ProDOT-Me 2 ) (0.01mol / L), stir with a magnetic stirrer until no particles exist, and let it stand for later use.

[0051] Electrolyte solution preparation: Dissolve lithium perchlorate (0.1 mol / L) in propylene carbonate, stir with a magnetic stirrer until no particles exist, and let stand for later use.

[0052] ITO glass was used as the conductive substrate, the ITO glass deposited with titanium and vanadium pentoxide (the molar ratio of V and Ti was 3:1) was used as the counter electrode, and the conductive substrate was coated with UV glue mixed with glass beads with a diameter of 150 μm. Bond with the counter electrode, control the bonding shape of the UV glue during the bonding process, make the UV glue, the conductive substrate and the counter electrode form a 3.45cm×3.45cm×150μm empty groove, and reserve a width of 6mm The liquid filling port com...

Embodiment 2

[0057] Prepare electroplating solution and electrolyte according to the method of Example 1.

[0058] ITO glass was used as the conductive substrate, the ITO glass deposited with titanium and vanadium pentoxide (the molar ratio of V and Ti was 3:1) was used as the counter electrode, and the conductive substrate was coated with UV glue mixed with glass beads with a diameter of 150 μm. Adhere to the counter electrode, so that the UV glue, conductive substrate and counter electrode form a 3.45cm×3.45cm×150μm empty slot, and then use the dispenser to control the direction of the UV glue, and use the UV glue to design separately inside the slot Form "U", "S", "T", "C" and "☆"-shaped device slots, and reserve a liquid filling port with a width of 6mm to communicate with the device slot.

[0059] Inject the electroplating solution with a syringe into the device slots of different shapes above through the liquid filling port, use the electrochemical workstation to polymerize, connect ...

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Abstract

The invention provides a preparation method of an electrochromic device. The method comprises the steps as follows: a conductive substrate and a counter electrode are bonded through an adhesive to form a device groove, and a closed space, which is not filled with the adhesive, between the conductive substrate and the counter electrode forms an empty slot of the device groove; electrochemical polymerization is performed after an electroplating solution is injected into the empty slot of the device groove, and an electroplating film is formed on the surface of the conductive substrate; the electroplating solution left after the electroplating film is formed in the empty slot of the device groove is taken out, then an electrolytic solution is injected into the empty slot of the device groove, and the electrochromic device is obtained. The electroplating solution is added to the designed device groove in advance, electrochemical polymerization is performed in the device groove, the electrochromic device can be prepared in one step, the technology is simple, the electrochromic devices in large size and different shapes can be prepared with the method, introduction of water oxygen and impurities is avoided with the method, and the prepared electrochromic device shows excellent electrochromic performance.

Description

technical field [0001] The invention relates to the field of electrochromic technology, in particular to an electrochromic device and a preparation method thereof. Background technique [0002] An electrochromic device refers to a device that can reversibly change its color under the drive of an external voltage. The common structure of an electrochromic device is a sandwich structure, including a working electrode, a counter electrode, and an electrolyte layer in the middle. The current common preparation method of electrochromic devices is: separately prepare two kinds of electrode materials, and then combine them into electrochromic devices. For example, patent 201510102748.7 discloses a preparation method of an electrochromic device: 1. Substrate preparation: wash the glass substrate in anhydrous acetone for 0.5-4 hours, then wash it with absolute ethanol for 0.5-3 hours, and then remove Wash in ionized water for 0.5 to 5 hours to obtain a spare glass substrate; 2. Vac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1523G02F1/1516G02F1/155G02F1/153
CPCG02F1/15G02F1/153G02F1/155
Inventor 徐春叶管世安汪文静郑建明
Owner UNIV OF SCI & TECH OF CHINA