High-performance all-solid-state polymer electrochromic device and preparation method thereof

An all-solid polymer and electrochromic device technology, which is applied in the fields of instruments, nonlinear optics, optics, etc., can solve the problems of poor electrochemical stability and easy leakage of liquid device structure, and achieve low raw material cost and safe and non-toxic preparation process. Effects of pollution, high optical contrast

Active Publication Date: 2020-01-21
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an all-solid polymer electrochromic device and its preparation method and application in view of the problems of easy leakage and poor electrochemical stability of the liquid device structure in the prior art

Method used

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  • High-performance all-solid-state polymer electrochromic device and preparation method thereof
  • High-performance all-solid-state polymer electrochromic device and preparation method thereof
  • High-performance all-solid-state polymer electrochromic device and preparation method thereof

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Experimental program
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Embodiment 1

[0030] Embodiment 1: Preparation of electrochromic layer

[0031] In the three-electrode electrolysis system, use aniline (4.657g, 0.05mol) as a monomer, and sulfuric acid solution (98% concentrated sulfuric acid 10g, 0.1mol) as a supporting electrolyte to prepare 100mL blank electrolyte solution with a concentration of 1mol / L. 100 mL of monomer solution with a concentration of 0.5 mol / L was prepared, and the indium tin oxide (ITO) conductive glass was used as the working electrode, the platinum electrode was used as the auxiliary electrode, and the silver / silver chloride electrode was used as the reference electrode. Potential polymerization method for electrochemical polymerization, the constant potential used in the constant potential polymerization method is 0.8V, the polymerization power is 0.04C, and then dedoped at a negative potential of -0.4V for 60s to obtain a layer deposited on the ITO conductive substrate The transparent polymer film was washed with acetonitrile t...

Embodiment 2

[0032] Embodiment 2: the preparation of ion storage layer

[0033] 0.2525g of PEDOT:PSS was added into a 50ml beaker as a solute, 25g of deionized water was used as a solvent, and a 1% PEDOT:PSS aqueous solution was obtained after magnetic stirring for 2 hours. The solution was filtered three times by suction to remove undissolved solid residues in the solution, and the filtered filtrate was stored in a centrifuge tube for later use, and then spin-coated on a clean and dry ITO glass to obtain a PEDOT:PSS film. The mass ratio of PEDOT:PSS to water is 1:99, the rotation speed of the spin coating method is 1000rpm, and the time is 60s. Then, the PEDOT:PSS obtained by spin coating on the substrate was dried in an oven at 140° C. for 10 min to obtain a PEDOT:PSS polymer film.

Embodiment 3

[0034] Embodiment 3: Preparation of electrolyte layer

[0035] Put 2g of polymer binder PMMA and 8g of plasticizer PC in a 30ml reagent bottle, seal the reagent bottle and heat and swell in an oven at 75°C for 20h, and record it as system A; take 4g of acetonitrile and 10g of dichloro The mixed solution of methane is placed in a 30ml reagent bottle, and then 4g of supporting electrolyte LiBF 4 Add it into the mixed solvent, sonicate for 30 minutes until the electrolyte is completely dissolved, and record it as system B; mix the above system A with system B, and sonicate the resulting mixed system for 30 minutes until it is uniform, and remove part of the solvent by rotary evaporation to obtain a polymer gel electrolyte.

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Abstract

The invention discloses a high-performance all-solid-state polymer electrochromic device and a preparation method thereof. The high-performance all-solid-state polymer electrochromic device structurally comprises the following components in sequence: a transparent conductive electrode I, an electrochromic layer, an electrolyte layer, an ion storage layer, and a transparent conductive electrode II.As a PANI film is used as the electrochromic layer, PEDOT:PSS is used as the ion storage layer, and colors of both the two polymer materials change from transparent to dark when voltage is applied, ahigh optical contrast and fast response all-solid-state polymer electrochromic device is obtained. The all-solid-state polymer electrochromic device has application potential in the fields of smart glasses and anti-glare rearview mirrors. In addition, the operation process is simple, the raw material cost is low, the preparation process is safe and pollution-free, and the requirements of green production and the ecological concept of protecting the environment are met.

Description

technical field [0001] The invention relates to a preparation method of an all-solid-state polymer electrochromic device with high optical contrast and fast response, and has potential applications in the fields of smart glasses, anti-glare rearview mirrors and the like. Background technique [0002] At present, electrochromic devices are mostly liquid-type devices and solid-state devices. Among them, liquid electrochromic devices, because their electrochromic materials or electrolyte materials exist in a liquid state, have problems such as easy leakage, low safety, and poor stability. Therefore, the research and development of solid-state electrochromic devices is particularly important. [0003] Among many conductive polymer materials, polyaniline (PANI) has received great attention due to its good thermal and chemical stability, easy film formation, and low price. In particular, PANI exhibits multiple redox states at different potentials and thus exhibits different color...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1516G02F1/153G02F1/155
CPCG02F1/1525G02F1/15165G02F1/155G02F1/153
Inventor 张诚杨园园吕晓静徐欣佳
Owner ZHEJIANG UNIV OF TECH
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