Preparation method of tungsten oxide/ammonium molybdate composite film for electrochromism

A composite film and electrochromic technology, applied in the direction of coating, etc., can solve the problems of long electrochromic response time and low electrochromic efficiency, and achieve short color changing response time, low overall cost, and simple and easy-to-operate preparation method Effect

Inactive Publication Date: 2021-06-22
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure crystalline tungsten oxide has disadvantages such as low electrochromic efficiency and long electrochromic response time.

Method used

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  • Preparation method of tungsten oxide/ammonium molybdate composite film for electrochromism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A preparation method for electrochromic tungsten oxide / ammonium molybdate composite film, comprising the steps of:

[0020] (1) Add 0.6g sodium tungstate to 50mL deionized water under constant stirring, then add 0.16g potassium oxalate, adjust the pH of the solution to 1.2 by adding 3M hydrochloric acid, and stir for 40min to prepare the tungsten oxide precursor solution, The FTO glass was put into the hydrothermal kettle obliquely with the conductive side facing down, and then kept at 120 °C for 1 h through hydrothermal reaction. The prepared glass was dried in an oven for 0.5 h, and then the FTO glass was transferred to a muffle furnace for treatment, heated to 300 °C at a heating rate of 2 °C / min, kept for 1 h, and then cooled to room temperature. The tungsten oxide film attached to the FTO conductive glass can be obtained.

[0021] (2) Dissolve 0.156 g of ammonium molybdate in 100 mL of deionized water, and stir the solution for 30 min with magnetic force. 3M hydr...

Embodiment 2

[0024] A preparation method for electrochromic tungsten oxide / ammonium molybdate composite film, comprising the steps of:

[0025] (1) Add 1.2g sodium tungstate to 100mL water under constant stirring, then add 0.32g potassium oxalate, adjust the pH of the solution to 1.4 by adding 3M hydrochloric acid, and stir for 30min to obtain a tungsten oxide precursor solution. FTO The glass was put into the hydrothermal kettle obliquely with the conductive side facing down, and then kept at 140°C for 1.5h through hydrothermal reaction. The prepared glass was dried in an oven for 45 min, and then the FTO glass was transferred to a muffle furnace for processing, heated to 400 °C at a heating rate of 2 °C / min, kept for 1.5 h, and cooled to room temperature. The tungsten oxide film attached to the FTO conductive glass can be obtained.

[0026] (2) Dissolve 0.312g of ammonium molybdate in 100mL of deionized water, and magnetically stir the solution for 35min. 3M hydrochloric acid solution ...

Embodiment 3

[0029] A preparation method for electrochromic tungsten oxide / ammonium molybdate composite film, comprising the steps of:

[0030] (1) Add 1.5g sodium tungstate to 100mL water under constant stirring, then add 0.24g potassium oxalate, adjust the pH of the solution to 1.5 by adding 3M hydrochloric acid, and stir for 45min to obtain a tungsten oxide precursor solution. FTO The glass was put into the hydrothermal kettle obliquely with the conductive side facing down, and then kept at 150°C for 2h through hydrothermal reaction. The prepared glass was dried in an oven for 1 h, then the FTO glass was transferred to a muffle furnace for processing, heated to 450 °C at a heating rate of 2 °C / min, kept for 2 h, and cooled to room temperature. The tungsten oxide film attached to the FTO conductive glass can be obtained.

[0031] (2) Dissolve 0.4 g of ammonium molybdate in 100 mL of deionized water, and magnetically stir the solution for 45 min. 3M hydrochloric acid solution was added ...

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Abstract

The invention discloses a preparation method of a tungsten oxide / ammonium molybdate composite film for electrochromism. The method comprises the following steps: firstly, preparing a tungsten oxide film by adopting an optimized hydrothermal method; then depositing ammonium molybdate nanoparticles on the tungsten oxide thin film by adopting an electro-deposition method; and finally obtaining the tungsten oxide / ammonium molybdate composite film material. According to the prepared composite film, the electrochromism performance of tungsten oxide is improved, and the electrochromism efficiency is improved; the preparation method is simple and easy to operate and low in overall cost.

Description

technical field [0001] The invention belongs to the technical field of preparation of electrochromic thin film materials, in particular to a preparation method of a tungsten oxide / ammonium molybdate composite thin film used for electrochromic. Background technique [0002] At present, the world has entered the era of the fourth industrial revolution dominated by low-carbon, energy-saving and environmental protection, and new energy. The study of sustainable and environmentally friendly materials is an increasingly active research field. Most countries in the world have reached an unprecedented consensus on establishing a low-carbon, green and environmentally friendly society. And our country also proposes to establish a resource-saving and environment-friendly society, and regards energy conservation and emission reduction as a national policy. The realization of building energy conservation is an important guarantee for our country to achieve the goal of energy conservati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34
CPCC03C17/3417C03C2217/241C03C2217/219C03C2217/228C03C2217/70C03C2218/111C03C2218/115
Inventor 刘志锋李子旭
Owner TIANJIN CHENGJIAN UNIV
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