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A kind of preparation method of tungsten oxide electrochromic electrode

An electrochromic and tungsten oxide technology, applied in instruments, nonlinear optics, optics, etc., can solve the problems of difficult large-scale preparation, complex and expensive equipment, difficult operation, etc., and achieve simple process, shortened discoloration time, and low cost Effect

Active Publication Date: 2021-01-05
DONGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a preparation method of tungsten oxide electrochromic electrode, which overcomes the technical defects of complex and expensive equipment, difficult operation, difficulty in large-scale preparation and limited practical application in the existing preparation method

Method used

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  • A kind of preparation method of tungsten oxide electrochromic electrode
  • A kind of preparation method of tungsten oxide electrochromic electrode
  • A kind of preparation method of tungsten oxide electrochromic electrode

Examples

Experimental program
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Effect test

Embodiment 1

[0029] (1) Dissolve 2g of tungsten hexachloride in 25mL of absolute ethanol, stir and dissolve at 30°C for 20min to obtain a 0.2mol / L blue precursor solution.

[0030] (2) Heat the FTO glass substrate to 50°C, press 1mL / cm 2 The amount of the precursor solution prepared in step (1) is evenly sprayed on the conductive surface of FTO glass under the air pressure of 0.2MPa; it is irradiated with an ultraviolet lamp with a wavelength of 400nm and a power of 5W for 2min to obtain the surface-attached tungsten oxide electrochromic Thin film FTO electrodes.

[0031] (3) Place the FTO conductive glass with the tungsten oxide electrochromic film attached to the surface prepared in step (2) in a vacuum oven and dry at 60° C. for 4 hours to obtain a tungsten oxide electrochromic electrode.

[0032] The scanning electron microscope picture of the tungsten oxide electrochromic electrode surface that the present embodiment makes is as figure 2 As shown, it shows that the tungsten oxide e...

Embodiment 2

[0036] (1) Dissolve 4g of tungsten hexachloride in 10mL of absolute ethanol, stir and dissolve at 50°C for 100min to obtain a 1mol / L blue precursor solution.

[0037] (2) Heat the FTO glass substrate to 100°C, press 5mL / cm 2 Spray the precursor solution prepared in step (1) evenly on the conductive surface of FTO glass under 0.5MPa pressure; use a UV lamp with a wavelength of 365nm and a power of 10W to irradiate for 30min to obtain a tungsten oxide electrochromic film attached to the surface The FTO electrode.

[0038] (3) Place the FTO conductive glass with the tungsten oxide electrochromic film on the surface prepared in step (2) and dry it in a vacuum oven at 100° C. for 10 hours to obtain a tungsten oxide electrochromic electrode.

[0039] The light modulation range of the tungsten oxide electrochromic electrode prepared in this embodiment is as follows: Figure 5 As shown, the results show that at λ=632.8nm, the light modulation range of the FTO electrode is 30.71%. B...

Embodiment 3

[0041] (1) Dissolve 16g of tungsten hexachloride in 20mL of absolute ethanol, stir and dissolve at 80°C for 300min to obtain a 2mol / L blue precursor solution.

[0042] (2) Heat the FTO glass substrate to 150°C, press 10mL / cm 2 The amount of the precursor solution prepared in the step (1) is evenly sprayed on the FTO glass conductive surface under 1MPa pressure; using a wavelength of 345nm and a power of 30W UV lamp for 60min irradiation, the surface is obtained with tungsten oxide electrochromic film. FTO electrodes.

[0043] (3) Place the FTO conductive glass with the tungsten oxide electrochromic film on the surface prepared in step (2) and dry it in a vacuum oven at 120° C. for 12 hours to obtain a tungsten oxide electrochromic electrode.

[0044] The time response curve of the tungsten oxide electrochromic electrode prepared in this embodiment is as follows figure 1 As shown, it can be seen that the discoloration speed of the prepared tungsten oxide electrode is relativ...

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Abstract

The invention relates to a preparation method of a tungsten-oxide electrochromic electrode. The preparation method comprises the steps that a tungsten source is dissolved in a solvent and is stirred to obtain a precursor solution; the precursor solution is sprayed on conductive glass, ultraviolet light irradiation is preformed to obtain a tungsten-oxide electrochromic film, and vacuum drying is performed to obtain the tungsten-oxide electrochromic electrode. The preparation method is simple in process, short in preparation period and low in raw material cost. The prepared tungsten-oxide electrochromic electrode is uniform in color change and excellent in performance, has good application prospect and is feasible for large-scale production of electrochromic devices.

Description

technical field [0001] The invention belongs to the field of preparation of electrochromic materials, in particular to a preparation method of tungsten oxide electrochromic electrodes. Background technique [0002] Electrochromism is a phenomenon in which a material undergoes a stable, reversible color change under the action of an applied electric field. Electrochromic materials are mainly divided into organic electrochromic materials and inorganic electrochromic materials. Organic electrochromic materials include viologens, polythiophenes and their derivatives, which have poor cycle stability and cannot meet the needs of actual production and life. Inorganic electrochromic materials are widely used due to their excellent environmental stability, and their preparation methods include evaporation, magnetron sputtering, chemical vapor deposition, and sol-gel methods. However, the above-mentioned various methods have problems such as complex and expensive equipment, difficul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/155
CPCG02F1/155
Inventor 王宏志谢昌嵩李策李然张青红侯成义林改
Owner DONGHUA UNIV
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