Preparation method of WO3/MoO3 composite electrochromic film

An electrochromic film and thin film technology, applied in nonlinear optics, instruments, optics, etc., can solve problems such as constraints, and achieve the effects of low cost, good electrochromic performance, and simple and easy-to-operate preparation method.

Inactive Publication Date: 2019-08-06
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them WO 3 Electrochromic performance is good, cheap and easy to prepare, but WO 3 There are still many defects in terms of color-changing efficiency and cycle life, which restrict its rapid development and application. The preparation of composite electrochromic thin films is an effective method and future trend of development to improve the performance of electrochromic materials.

Method used

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  • Preparation method of WO3/MoO3 composite electrochromic film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step 1: Preparation of WO 3 nanorod array film

[0024] Take Na 2 WO 4 2H 2 O is the precursor, deionized water is the solvent, and a 0.03mol L -1 reaction solution, add 0.01mol·L -1 K 2 C 2 o 4 ·H 2 O is the structure-directing agent, then, add HCl dropwise to adjust the pH value of the solution to 1.4, place the clean conductive glass in the above reaction solution, and conduct a hydrothermal reaction at 175°C for 28 hours. After the reaction, wash the sample with deionized water, Drying, and finally annealing at 530°C, to obtain WO 3 Nanorod Array Films.

[0025] Step 2: Preparation of WO 3 / MoO 3 Composite electrochromic film

[0026] Take Na 2 MO 4 as the precursor, deionized water as the solvent, stirred at 25°C for 3 hours, and prepared 0.02mol L -1 MoO 3 Electrodeposition solution, with WO 3 The nanorod array film is the working electrode, Pt is the counter electrode, and the MoO 3 In the electrodeposition solution, the reaction temperature is...

Embodiment 2

[0028] Step 1: Preparation of WO 3 nanorod array film

[0029] Take Na 2 WO 4 2H 2 O is the precursor, deionized water is the solvent, and a 0.05mol L -1 reaction solution, add 0.03mol·L -1 K 2 C 2 o 4 ·H 2 O is the structure-directing agent, then, add HCl dropwise to adjust the pH value of the solution to 1.6, place the clean conductive glass in the above reaction solution, and conduct a hydrothermal reaction at 185°C for 20 hours. After the reaction, wash the sample with deionized water, Drying, and finally annealing at 570°C, to obtain WO 3 Nanorod Array Films.

[0030] Step 2: Preparation of WO 3 / MoO 3 Composite electrochromic film

[0031] Take Na 2 MO 4 as the precursor, deionized water as the solvent, stirred at 30°C for 3 hours, and prepared 0.04mol L -1 MoO 3 Electrodeposition solution, with WO 3 The nanorod array film is the working electrode, Pt is the counter electrode, and the MoO 3 In the electrodeposition solution, the reaction temperature wa...

Embodiment 3

[0033] Step 1: Preparation of WO 3 nanorod array film

[0034] Take Na 2 WO 4 2H 2 O is the precursor, deionized water is the solvent, and a 0.04mol L -1 reaction solution, add 0.02mol·L -1 K 2 C 2 o 4 ·H 2 O is the structure-directing agent, then, add HCl dropwise to adjust the pH value of the solution to 1.5, place the clean conductive glass in the above reaction solution, and conduct a hydrothermal reaction at 180°C for 24 hours. After the reaction, wash the sample with deionized water, Drying, and finally annealing at 550°C, to obtain WO 3 Nanorod Array Films.

[0035] Step 2: Preparation of WO 3 / MoO 3 Composite electrochromic film

[0036] Take Na 2 MO 4 as the precursor, deionized water as the solvent, stirred at 28°C for 3 hours, and prepared 0.03mol L -1 MoO 3 Electrodeposition solution, with WO 3 The nanorod array film is the working electrode, Pt is the counter electrode, and the MoO 3 In the electrodeposition solution, the reaction temperature is 2...

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Abstract

The invention discloses a preparation method of a WO3/MoO3 composite electrochromic film. A WO3 reaction solution is prepared and a WO3 nanorod array film is prepared by using a hydrothermal method; MoO3 electro-deposition liquid is prepared; MoO3 is electrodeposited on a WO3 nanorod array by using an electrodeposition method; and then a WO3/MoO3 composite electrochromic film is prepared. According to the invention, the obtained WO3/MoO3 composite electrochromic film has the better electrochromic performance by being compared with the single WO3 electrochromic film. The preparation method is simple and is easy to operate; and the prepared WO3/MoO3 composite electrochromic film has advantages of low cost and pollution prevention.

Description

technical field [0001] The invention belongs to the technical field of material preparation, in particular to a WO 3 / MoO 3 Preparation method of composite electrochromic film. Background technique [0002] At present, my country's industrialization and urbanization are developing at a high speed. At present, there are more than 40 billion square meters of construction area, and 40 billion square meters of new buildings are planned to be built in the next 30 years. Therefore, green buildings are developed and promoted, and green energy-saving materials are researched and developed. , is a significant and urgent task. With the increasing demand for energy-saving buildings, more and more attention has been paid to the research and development of energy-saving doors and windows. Nowadays, the types of smart glass are increasingly abundant, among which electrochromic glass is becoming a research hotspot at home and abroad. 98% of the solar light energy is distributed in the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/15
CPCG02F1/15
Inventor 刘志锋张曼滢郭振刚
Owner TIANJIN CHENGJIAN UNIV
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