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Gel-like polymer electrolyte and method for preparing solid-state electrochromic devices based on conductive polymers

A conductive polymer, polymer technology, applied in the direction of instruments, nonlinear optics, optics, etc., can solve the problem that there is no large-scale production of PEC materials and their solid devices, the preparation technology of PEC materials is not mature enough, and there is no large-scale industrial application and other issues, to achieve the effect of good processing performance, easy preparation and easy assembly

Active Publication Date: 2017-12-05
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, conductive polymer electrochromic materials have not been widely industrialized in the fields of display technology, smart windows, and the automotive industry. There is even no large-scale production of PEC materials and solid devices in China.
The main reasons are as follows: first, the preparation technology of high-performance and low-cost PEC materials is not mature enough, and the basic theory is not perfect enough; second, the design and assembly of PEC material solid devices with excellent performance are still in the design and development stage , there are three main problems: (1) high-performance solid electrolyte, (2) high-performance electrode material, (3) rational design and assembly technology of solid-state devices

Method used

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  • Gel-like polymer electrolyte and method for preparing solid-state electrochromic devices based on conductive polymers
  • Gel-like polymer electrolyte and method for preparing solid-state electrochromic devices based on conductive polymers
  • Gel-like polymer electrolyte and method for preparing solid-state electrochromic devices based on conductive polymers

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A method for preparing a single-layer solid device based on a conductive polymer electrochromic material, comprising the following steps:

[0040] Step (1) prepares gel-like polymer electrolyte:

[0041] According to the mass ratio of electrolyte substances to CH 3 CN: PC: PMMA: LiClO 4 =70:20:7:3 Weigh the raw materials, wherein propylene carbonate (PC) (1g), chemically pure; polymethyl methacrylate (PMMA) (0.35g), requires a weight average molecular weight of (MW=120000g / mol), chemically pure; acetonitrile (ACN) (3.5g), chromatographically pure; lithium perchlorate (LiClO 4 ) (0.15g), analytically pure. Put the weighed PMMA and PC into a round-bottomed flask (50ml) with a hollow stopper, and put them in an oven at a constant temperature of 70°C for 18h to make the PMMA well swell in the PC. Add the supporting electrolyte lithium perchlorate (0.15g) and the electrolytic solvent acetonitrile (3.5g) prepared according to the mass ratio into the round bottom flask, a...

Embodiment 2

[0051] The monomer remains unchanged, the preparation method of the conductive polymer film and the assembly method of the device are the same as in Example 1, the difference is that the working electrode becomes an ITO-PET flexible electrode, so that the positive and negative electrode materials prepared are different, and what is obtained is a A solid-state electrochromic device based on a conductive polymer electrochromic material.

[0052] Step (1) prepares gel-like polymer electrolyte:

[0053] According to the mass ratio of electrolyte substances to CH 3 CN: PC: PMMA: LiClO 4 =70:20:7:3 Weigh the raw materials, wherein propylene carbonate (PC) (1g), chemically pure; polymethyl methacrylate (PMMA) (0.35g), requires a weight average molecular weight of (MW=120000g / mol), chemically pure; acetonitrile (ACN) (3.5g), chromatographically pure; lithium perchlorate (LiClO 4 ) (0.15g), analytically pure. Put the weighed PMMA and PC into a round-bottomed flask (50ml) with a ho...

Embodiment 3

[0061] The monomer remains unchanged, the preparation method of the conductive substrate of the electrode material, the conductive polymer film, and the assembly method of the device are the same as in Example 1, except that the composition ratio of the gel-like polymer electrolyte material is different.

[0062] Step (1) prepares gel-like polymer electrolyte:

[0063] According to the mass ratio of electrolyte substances to CH 3 CN: PC: PMMA: LiClO 4 =14:4:2:1 Weigh the raw materials, wherein propylene carbonate (PC) (0.8g) is chemically pure; polymethyl methacrylate (PMMA) (0.4g) requires a weight average molecular weight of (MW=120000g / mol), chemically pure; Acetonitrile (ACN) (2.8g), chromatographically pure; Lithium perchlorate (LiClO 4 ) (0.2g), analytically pure. Put the weighed PMMA and PC into a round-bottomed flask (50ml) with a hollow stopper, and put them in an oven at a constant temperature of 70°C for 18h to make the PMMA well swell in the PC. Add the suppor...

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Abstract

The invention discloses a gelatinous polymer electrolyte and a preparation method for a solid electrochromism device based on a conductive polymer. The gelatinous polymer electrolyte has the advantages of good environment stability and high ionic conduction. The preparation method for the solid electrochromism device based on the conductive polymer comprises the following steps: using the working electrode deposited by a conductive polymer membrane with electrochromism performance as the positive electrode, uniformly coating the gelatinous polymer electrolyte on the surface of the conductive polymer membrane of the positive electrode material, after an electrolysis solvent A is partially volatilized and becomes thicker, taking a blank conductive substrate with the same material as the negative electrode, packaging and assembling the positive and negative electrode materials by using double faced adhesive tapes, and finally stilly placing the assembled device in the shade place for 1-4 days. The solid device based on the conductive polymer is easy to assemble and prepare, and has the electrochromism performance, so the solid device based on the conductive polymer has large application prospect in the fields, such as the display, the intelligent window, and the electronic paper.

Description

(1) Technical field [0001] The invention relates to a gel-like polymer electrolyte and a preparation method of a conductive polymer-based solid-state electrochromic device. The device has a wide application base in the fields of flexible displays, electronic paper, smart windows, electronic advertising screens and the like. (2) Background technology [0002] Electrochromism refers to the fact that under the action of an external electric field, due to the redox reaction or the injection or extraction process of charges (electrons or ions), the optical properties of materials (including transmittance, absorptivity and reflectivity, etc.) are within the range of visible light wavelengths. A reversible transformation occurs, and its macroscopic performance is that the color of the material has a reversible transformation with the action of an external electric field. Since Platt proposed the concept of electrochromism in the 1960s, electrochromic materials have attracted widesp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/155
CPCG02F1/15G02F2001/164
Inventor 张诚闫拴马吕晓静欧阳密金晓强姜慧虹
Owner ZHEJIANG UNIV OF TECH
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