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Electrochromic device based on transparent metal mesh electrode

An electrochromic device and transparent metal technology, applied in instruments, nonlinear optics, optics, etc., can solve the problems of uneven discoloration of devices, low production yield of time durability, etc., to reduce the influence of ion polarization, improve the Transmittance adjustment ability to achieve electrochromic effect

Pending Publication Date: 2021-11-05
HAINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that at this time, on the counter electrode, in addition to Li+ being inserted into NiO, Cu 2+ 、 Bi 3+ Electrodeposition is a strong side reaction, which also causes uneven discoloration of the device
The Narile team then spin-coated BTD on the surface of NiO to suppress Cu 2+ 、 Bi 3+ Deposition, however, using BTD inhibitors, although the time durability of this method and the production yield are low (Nature Energy, 2019, 4, 223-229)

Method used

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  • Electrochromic device based on transparent metal mesh electrode
  • Electrochromic device based on transparent metal mesh electrode
  • Electrochromic device based on transparent metal mesh electrode

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Such as figure 1 As shown, an electrochromic device based on a transparent metal mesh electrode consists of a four-layer structure, with a first layer 1, a second layer 2, a third layer 3 and a fourth layer 4 in sequence,

[0026] The first layer 1 is transparent conductive glass, which is FTO glass.

[0027] The third layer 3 is a zinc mesh, the inner diameter of the mesh is 1-1000 μm, the mesh is 5-300 mesh, and the transparency is 50% to 99%. In this embodiment, the inner diameter of the mesh is 50 μm and the mesh is 50. mesh, the transparency is 80% to 95%.

[0028] The fourth layer 4 is transparent and non-conductive glass for placing the third layer 3; the second layer 2 is a cavity for containing electrolyte; the first layer and the third layer are connected with wires.

[0029] Preparation steps:

[0030] (1) Electrolyte preparation: 0.1mol of ZnCl 2 Add to a small amount of deionized water and stir to mix, then add 1molKOH, stir while adding, the Zn(OH) gen...

Embodiment 2

[0039] The main difference from Example 1 lies in the preparation of the electrolyte: the ZnCl of 0.08mol 2 Add it into a small amount of deionized water and stir to mix, then add 1.6mol KOH, stir while adding, the Zn(OH) generated by the complexation reaction 4 2- , when the reaction is complete and the solution becomes clear, add deionized water to dilute to 1L to obtain 0.08M Zn(OH) 4 2- complex ionic electrolytes. The results show that it is reversible and the electrovariation effect is good.

Embodiment 3

[0041] The main difference from Example 1 lies in the preparation of the electrolyte: the ZnCl of 1mol 2 Add it into a small amount of deionized water and stir to mix, then add 4.1mol KOH, and stir while adding, the Zn(OH) generated by the complexation reaction 4 2- , when the reaction is complete and the solution becomes clear, add deionized water to dilute to 1L to obtain 1M Zn(OH) 4 2- complex ionic electrolytes. The results show that it is reversible and the electrovariation effect is good.

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Abstract

The invention provides an electrochromic device based on a transparent metal mesh electrode. The electrochromic device comprises four layers of structures, namely a first layer, a second layer, a third layer and a fourth layer in sequence, wherein the first layer is transparent conductive glass, the third layer is a zinc mesh or a galvanized metal mesh, the fourth layer is transparent non-conducting glass and is used for placing the third layer, the second layer is a cavity and is used for accommodating an electrolyte which is a complex ion electrolyte generated by a complex reaction of a zinc salt or zinc oxide and a strong base, and the first layer and the third layer are connected with a wire. According to the prepared electrochromic device, the influence of ion polarization is reduced, better deposition uniformity is obtained, the influence of by-products Zn (OH) 2 and ZnO on the reversibility of the device is reduced through the strong base electrolyte, the good transmittance adjusting capacity is achieved, electrochromism is better achieved, and the device is better applied.

Description

technical field [0001] The invention relates to the field of electrochromism, in particular to an electrochromic device based on a transparent metal mesh electrode. Background technique [0002] Electrochromism is a cutting-edge technology belonging to the family of chromogenic technologies. It uses materials to undergo reversible light absorption or light scattering under the action of an external electric field or current to produce reversible color or optical performance changes. The corresponding optoelectronic devices are called electrochromic. Chromogenic devices. Due to artificial dynamic and reversible light adjustment, electrochromic devices have broad development prospects and great commercial value in the field of smart windows. Installing electrochromic smart windows in buildings and cars, in addition to providing privacy features, can also enable energy savings by reducing heating, ventilation, and air conditioning requirements. For example, installing smart w...

Claims

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Application Information

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IPC IPC(8): G02F1/155G02F1/153G02F1/1523
CPCG02F1/155G02F1/1533G02F1/1525
Inventor 王振李善林陈永韦雅庆
Owner HAINAN UNIVERSITY
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