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Preparation method of nickel oxide/polyaniline composite electrochromic film

An electrochromic and polyaniline technology, which is applied in the field of preparation of nickel oxide/polyaniline composite electrochromic films, achieves the effects of overcoming poor optical properties, poor chemical stability, and simple preparation methods

Inactive Publication Date: 2013-08-07
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combining hydrothermal method and electrodeposition method to prepare organic / inorganic composite electrochromic thin film has not been reported so far. This method can realize the structural design of organic / inorganic composite electrochromic materials at the micro-nano level, making organic and inorganic electrochromic films The respective advantages of chromogenic materials are fully utilized, and outstanding electrochromic performance is expected to be obtained

Method used

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  • Preparation method of nickel oxide/polyaniline composite electrochromic film
  • Preparation method of nickel oxide/polyaniline composite electrochromic film
  • Preparation method of nickel oxide/polyaniline composite electrochromic film

Examples

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Effect test

Embodiment 1

[0026] The FTO conductive glass was sequentially immersed in deionized water, acetone and ethanol for ultrasonic cleaning for 20 minutes, and dried for later use. Weigh 0.62g of nickel acetate tetrahydrate and 0.31g of potassium persulfate and dissolve them in 46mL of water. After they are completely dissolved, add 3mL of concentrated ammonia water dropwise to obtain a reaction solution. In the kettle, keep warm at 180°C for 6 hours, and finally cool down to room temperature naturally, take out the FTO conductive glass, wash it with water and ethanol in sequence, dry it, and calcinate it at 500°C for 3 hours to obtain the FTO conductive glass with NiO layer; weigh 0.93g aniline monomer is dissolved in the sulfuric acid solution of 200mL0.5mol / L to obtain deposition liquid, will put the FTO conductive glass with NiO layer obtained above into deposition liquid as working electrode, with platinum plate as counter electrode, in 0.05mA / cm 2 The nickel oxide / polyaniline composite e...

Embodiment 2

[0028] The FTO conductive glass was sequentially immersed in deionized water, acetone and ethanol for ultrasonic cleaning for 30 minutes, and dried for later use. Weigh 0.37g of nickel acetate tetrahydrate and 0.185g of potassium persulfate and dissolve them in 47.2mL of water. After they are completely dissolved, add 1.8mL of concentrated ammonia water dropwise to obtain a reaction solution. In a hydrothermal kettle, keep warm at 160°C for 12 hours, and finally cool down to room temperature naturally, take out the FTO conductive glass, wash it with water and ethanol in sequence, dry it, and calcinate it at 400°C for 6 hours to obtain the FTO conductive glass with NiO layer; Weigh 1.86g of aniline monomer and dissolve it in 200mL1mol / L sulfuric acid solution to obtain a deposition solution, put the FTO conductive glass with a NiO layer obtained above into the deposition solution as a working electrode, and use a platinum sheet as a counter electrode. 0.1mA / cm 2 The nickel oxi...

Embodiment 3

[0030]The FTO conductive glass was sequentially immersed in deionized water, acetone and ethanol for ultrasonic cleaning for 25 minutes, and dried for later use. Weigh 0.62g of nickel acetate tetrahydrate and 0.31g of potassium persulfate and dissolve them in 46mL of water. After they are completely dissolved, add 3mL of concentrated ammonia water dropwise to obtain a reaction solution. In the kettle, keep warm at 170°C for 8 hours, and finally cool down to room temperature naturally, take out the FTO conductive glass, wash with water and ethanol in turn, dry, and calcinate at 600°C for 2 hours to obtain the FTO conductive glass with NiO layer; weigh 0.93g aniline monomer is dissolved in the sulfuric acid solution of 200mL0.5mol / L to obtain deposition liquid, will put the FTO conductive glass with NiO layer obtained above into deposition liquid as working electrode, with platinum plate as counter electrode, in 0.5mA / cm 2 The nickel oxide / polyaniline composite electrochromic f...

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Abstract

The invention relates to a preparation method of a nickel oxide / polyaniline composite electrochromic film, which comprises the following steps: immersing FTO (fluorine-doped tin oxide) conductive glass in a mixed solution of nickel acetate tetrahydrate, potassium persulfate, ammonia water and water, keeping the temperature at 160-180 for 6-12 hours, naturally cooling to room temperature, cleaning, and calcining to obtain FTO conductive glass having a NiO layer; dissolving an aniline monomer in a sulfuric acid solution to obtain a deposition solution, and immersing the FTO conductive glass having the NiO layer in the deposition solution; and performing electrodeposition by taking the FTO conductive glass in the deposition solution as a working electrode and a platinum sheet as a counter electrode. The invention realizes the combination of organic and inorganic electrochromic materials on the micrometer / nanometer level; and the prepared film has favorable electrochromic property and has wide application prospects in the fields such as smart windows, large-screen display and the like.

Description

technical field [0001] The invention belongs to the field of preparation of electrochromic thin films, in particular to a preparation method of nickel oxide / polyaniline composite electrochromic thin films. Background technique [0002] Electrochromic materials have been widely studied as one of the most promising smart materials. Among them, inorganic metal oxides have been studied more. However, there are still many problems in applying the currently researched inorganic metal oxides to smart windows. First, the electrochromic performance of oxide films declines during use, and the cycle stability needs to be further improved. The two main reasons are the electrochemical and chemical dissolution of the electrochromic film during use and the accumulation of ions as charge compensation in the electrochromic film, so that the electrochromic performance of the electrochromic film gradually decreases during use. secondly, the response time of the color change of the tungsten o...

Claims

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Application Information

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IPC IPC(8): C03C17/34
Inventor 王宏志马董云李耀刚张青红
Owner DONGHUA UNIV
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