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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, has wide application prospects, simple preparation methods, and overcomes the effects of poor chemical stability

Active Publication Date: 2013-06-26
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

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 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, it was kept at 180° C. for 6 hours, and finally cooled to room temperature naturally, and the FTO conductive glass was taken out, washed with water and ethanol successively, dried, and calcined at 500° C. for 3 hours to obtain the FTO conductive glass with NiO layer; Weigh 0.93g of aniline monomer and dissolve it in 200mL of 0.5mol / L sulfuric acid solution to obtain a deposition solution, put the FTO conductive glass with NiO layer obtained above into the deposition solution as a working electrode, and use a platinum sheet as a counter electrode , at 0.05mA / cm 2 The nickel oxid...

Embodiment 2

[0029] 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, dry it, and calcinate it at 400°C for 6 hours to obtain a FTO conductive glass with a NiO layer. Glass: Weigh 1.86g of aniline monomer and dissolve it in 200mL of 1mol / L sulfuric acid solution to obtain a deposition solution, put the FTO conductive glass with NiO layer obtained above into the deposition solution as a working electrode, and use a platinum sheet as a counter electrode , at 0.1mA / cm 2 The nickel ox...

Embodiment 3

[0031]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, it was kept at 170° C. for 8 hours, and finally cooled naturally to room temperature, and the FTO conductive glass was taken out, washed with water and ethanol successively, dried, and calcined at 600° C. for 2 hours to obtain the FTO conductive glass with NiO layer; Weigh 0.93g of aniline monomer and dissolve it in 200mL of 0.5mol / L sulfuric acid solution to obtain a deposition solution, put the FTO conductive glass with NiO layer obtained above into the deposition solution as a working electrode, and use a platinum sheet as a counter electrode , at 0.5mA / cm 2 The nickel oxide / ...

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Abstract

The invention relates to a preparation method of a nickel oxide / polyaniline composite electrochromic film. The preparation method comprises the following steps of: soaking FTO (Fluorine-doped Tin Oxide) conductive glass into a mixed solution, keeping the temperature of 160-180 DEG C for 6-12hours, naturally cooling to the room temperature, cleaning and calcining to obtain FTO conductive glass with a NiO layer, wherein the mixed solution is prepared from nickel acetate tetrahydrate, potassium persulfate, ammonia water and water; and dissolving an aniline monomer into a sulfuric acid solution to obtain a deposition liquid, then, soaking the FTO conductive glass with the NiO layer into the deposition liquid to be used as a working electrode, and carrying out electrolytic deposition on the electrode by using a platinum sheet to obtain the nickel oxide / polyaniline composite electrochromic film. By the preparation method, organic and inorganic electrochromic materials are compounded on the micro-nano level; and the prepared film has favorable electrochromic performance and a wide application prospect in the fields such as intelligent windows and large screen display.

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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Patent Type & Authority Applications(China)
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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