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Electrochromism device with polyaniline-polyvinyl alcohol compound film and preparation method thereof

An electrochromic device and polyvinyl alcohol technology, applied in the field of color-changing materials, can solve problems such as no electrochromic properties, and achieve the effects of good electrochromic properties and electrochemical activity, improved mechanical properties, and good performance.

Inactive Publication Date: 2006-06-21
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Semiconductor Optoelectronics, Vol. 21, No. 1, 2000, 53-55), but there is no research on its electrochromic performance

Method used

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  • Electrochromism device with polyaniline-polyvinyl alcohol compound film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The equipment used is: platinum sheet electrode, 1×1cm 2 , type 213; saturated calomel electrode, type 232; platinum wire electrode, Ag / AgCl reference electrode; ITO glass, square resistance 15Ω / □; electrochemical analyzer, CHI-830 type; Agilent 8453 ultraviolet spectrum analyzer; ZF -Type 3 potentiostat; two-compartment glass electrolytic cell.

[0040] Divide the area into 3.5×2.0cm 2 The ITO conductive glass is cleaned and dried with acetone, placed horizontally, and a polyvinyl alcohol aqueous solution with a concentration of 1wt% is cast on it, and dried at room temperature for 36 hours to obtain an indium tin oxide electrode covered with a polyvinyl alcohol film; The ITO conductive glass with polyvinyl alcohol film is used as the working electrode, the saturated calomel electrode is used as the reference electrode, and the 213-type platinum electrode is used as the counter electrode to form a three-electrode system. The electropolymerization solution is 1mol / L p...

Embodiment 2

[0045] The equipment used is: platinum sheet electrode, 1×1cm 2 , type 213; saturated calomel electrode, type 232; platinum wire electrode, Ag / AgCl reference electrode; ITO glass, square resistance 15Ω / □; electrochemical analyzer, CHI-830 type; Agilent 8453 ultraviolet spectrum analyzer; ZF -Type 3 potentiostat; two-compartment glass electrolytic cell.

[0046] Divide the area into 3.5×2.0cm 2 The ITO conductive glass is cleaned and dried with acetone, placed horizontally, and a polyvinyl alcohol aqueous solution with a concentration of 1wt% is cast on it, and dried at room temperature for 48 hours to obtain an indium tin oxide electrode covered with a polyvinyl alcohol film; The ITO conductive glass with polyvinyl alcohol film is used as the working electrode, the saturated calomel electrode is used as the reference electrode, and the 213-type platinum electrode is used as the counter electrode to form a three-electrode system. The electropolymerization solution is hydrochl...

Embodiment 3

[0050] The equipment used is: platinum sheet electrode, 1×1cm 2 , type 213; saturated calomel electrode, type 232; platinum wire electrode, Ag / AgCl reference electrode; ITO glass, square resistance 15Ω / □; electrochemical analyzer, CHI-830 type; Agilent 8453 ultraviolet spectrum analyzer; ZF -Type 3 potentiostat; two-compartment glass electrolytic cell.

[0051] Divide the area into 3.5×2.0cm 2 The ITO conductive glass is cleaned and dried with acetone, placed horizontally, and a polyvinyl alcohol aqueous solution with a concentration of 2.5wt% is cast on it, and dried at room temperature for 60 hours to obtain an indium tin oxide electrode covered with a polyvinyl alcohol film; to cover The ITO conductive glass with polyvinyl alcohol film is used as the working electrode, the saturated calomel electrode is used as the reference electrode, and the 213-type platinum electrode is used as the counter electrode to form a three-electrode system. The electropolymerization solution ...

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Abstract

The invention discloses an electrochromic device and making method with polyaniline-polyvinyl alcohol composite film, which is characterized by the following: changing the property of polyaniline-polyvinyl alcohol composite film due to changing the monomer density and kind of doping acid; displaying excellent dynamical property and adhesive property and electric activity; reducing the response time; inversing the change between colorless and purple in the extra voltage action; possessing longer circulation lifetime. The invention can be change into colorless, yellow, green, blue and purple with the penetration variation rate arranged from 38 to 75 percent at 600 nm, whose circulation lifetime reaches 1327 times.

Description

technical field [0001] The invention belongs to the technical field of color-changing materials, and in particular relates to an electrochromic device containing a polyaniline-polyvinyl alcohol composite film and a preparation method thereof. Background technique [0002] The electrochromic phenomenon refers to the reversible change of the optical properties of the material with the applied electric field. Using this property of the material, it can be made into an electrochromic glass device with adjustable color and light transmittance or reflectance. Traditional electrochromic devices are composed of basic flat glass and electrochromic system. Flat glass usually chooses transparent ITO (indium tin oxide) conductive glass. Electrochromic system generally includes electrochromic film, ion storage film and ion conductor film. , the three layers of thin film can be deposited on the basic flat glass in sequence, and the two layers of basic flat glass play the role of electrode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/15
Inventor 黄美荣巩前程李新贵
Owner TONGJI UNIV
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