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Manufacturing of high-transmittance flexible electrochromic film

An electrochromic and flexible electrical technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of low transparency, complex process, and limitations in large-area preparation

Inactive Publication Date: 2018-12-04
SHANGHAI DONGZHOU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the use of interlayer films in laminated glass can solve the problem of energy saving in buildings, these laminated electrochromic glasses mainly use liquid electrolytes as the ion transport layer of electrochromic glasses, which will bring new problems to the packaging of electrochromic glasses. Great inconvenience, but also not conducive to large-area display
A similar Chinese patent application document CN106020350 A discloses a method for preparing a gel electrolyte. This method prepares an electrolyte layer with high efficiency, but it cannot be industrialized because it exists in a liquid state.
Chinese patent application documents CN106117932 A and CN103214983 B disclose a kind of PVB as carrier, adopt the mode of twin-screw melt blending extrusion to prepare PVB conductive masterbatch, then add PVB conductive masterbatch in proportion in the process of extrusion casting Granules, a high-conductivity PVB film is made, and finally the air and moisture are completely exhausted by autoclave to make electrochromic laminated glass. The electrochromic glass prepared by this method has high conversion efficiency and stable performance, but the large There are limitations in area preparation, and the cost of industrial production is high and the process is complicated
Chinese patent application documents CN107167980A, CN206892521U, and CN207037308U disclose a flexible solid-state electrochromic device. The electrolyte membrane and the color-changing layer are prepared by screen printing and inkjet printing. This method has low production cost and is easy for industrial production, but Transparency during the period is too low for industrial application

Method used

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  • Manufacturing of high-transmittance flexible electrochromic film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Lithium perchlorate of purchase, resin powder are placed in 100 ℃ of vacuum ovens and dried for 24 hours for subsequent use.

[0023] Electrolyte Solution Preparation 1

[0024] Weigh 1.54g of lithium perchlorate and place it in a beaker, then measure 10ml of polycarbonate and add it into the beaker, stir and dissolve at room temperature, and store it in a vacuum drying oven after the dissolution is complete.

[0025] Electrolyte Slurry Preparation 1

[0026] Weigh 5.50g of the dried PVB resin powder and place it in a 500ml beaker, then add 1.25g of the prepared electrolyte solution, stir well and then add 0.85g of triethylene glycol diisocaprylate, polydimethylsiloxane 0.25 g, 0.31 g of dibutylhydroxytoluene. After stirring evenly, add 40ml of dimethylformamide to dissolve, completely dissolve and store in an airtight seal.

[0027] Preparation of Flexible Electrochromic Films 1

[0028] First, dry KPT-EL9 in a 120-degree oven for 15 minutes, and then vapor-deposit...

Embodiment 2

[0032] Electrolyte slurry preparation 2

[0033] Weigh 11.50g of the dried PVDF resin powder and place it in a 500ml beaker, then add 2.55g of the prepared electrolyte solution, stir well and then add 1.75g ​​of diethylene glycol dibenzoate and 0.55g of polyoxypropylene glyceryl ether , 0.62 g of tert-butyl-p-hydroxyanisole. After stirring evenly, add 90ml of a mixed solvent of dimethylformamide and xylene with a volume ratio of 2:1, completely dissolve and store in an airtight seal.

[0034] Preparation of Flexible Electrochromic Films 2

[0035] First, dry KPT-EL9 in a 120-degree oven for 15 minutes, and then vapor-deposit KPT-EL5 on the surface of the transparent conductive film by magnetron sputtering process. The production line prepares a solid electrolyte membrane from the prepared electrolyte slurry, adjusts the thickness of the film to 0.05mm, and then laminates the flexible electrochromic layer conductive film, flexible solid electrolyte film and flexible transpare...

Embodiment 3

[0039] Electrolyte Slurry Preparation 3

[0040] Weigh 11.50g of the dried PDMS resin powder and place it in a 500ml beaker, then add 2.55g of the prepared electrolyte solution, stir well and then add 1.75g ​​of triethylene glycol diisocaprylate, 0.55g of emulsified silicone oil, tert-butyl 0.62g of p-hydroxyanisole. After stirring evenly, add 90ml of acetone and toluene mixed solvent with a volume ratio of 3:5, completely dissolve and store in an airtight seal.

[0041] Fabrication of Flexible Electrochromic Films 3

[0042] First, dry KPT-EL9 in a 120-degree oven for 15 minutes, and then vapor-deposit KPT-EL5 on the surface of the transparent conductive film by magnetron sputtering process. The production line prepares a solid electrolyte membrane from the prepared electrolyte slurry, adjusts the film thickness to 0.1mm, and then laminates the flexible electrochromic layer conductive film, flexible solid electrolyte film and flexible transparent conductive film using a vac...

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Abstract

Provided is manufacturing of a high-transmittance flexible electrochromic film. A structure comprises at least a layer of flexible transparent conductive film, at least a layer of flexible electrochromic layer conducting film, at least a layer of flexible solid electrolyte film. The manufacturing is characterized in that the flexible solid electrolyte film uses a high-molecular polymer as a carrier, an inorganic lithium compound is dissolved in a polycarbonate solution and the solution is used as an electrolyte ionic solution, and an assistant is added in certain proportion, and the assistantis dissolved by an organic solvent, an evenly dissolved electrolyte slurry forms an all-solid-state high-transparent electrolyte film through a cast film machine in high temperature, then a vacuum automatic laminating machine is used to package multilayer materials in sequence, to obtain the high-transmittance electrochromic film. A problem of large-area display is solved, and a key problem of manufacturing of a flexible electrochromic device is also solved, and a problem of electrochromic glass is overcome, and industrialized production efficiency is greatly improved. In addition, the flexible electrolyte film has good application prospect in fields of flexible battery, energy storage, intelligent wearing, and flexible display.

Description

technical field [0001] The invention belongs to the field of preparation of new chemical materials, and in particular relates to the preparation of a high-permeability flexible electrochromic film. Background technique [0002] Electrochromism (Electrochromism) refers to the phenomenon that under the action of electric field and current, materials cause redox reactions through electrochemical processes to produce reversible discoloration. The electrochromic system has a complex structure, usually consisting of five layers of electrochromic layer (EC), ion conductive layer (IC) and ion storage layer (IS) sandwiched between two transparent conductive layers (TC). When a DC voltage of 1-3V is applied between the conductive layers, the conductive ions will shuttle back and forth between the ion storage layer and the electrochromic layer. Utilizing the electrochromic properties of the material, it can be made into a smart window (smart window, also known as a smart window) with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/15
CPCG02F1/15
Inventor 郭素文郑岩陈磊刘星元边静宇侯成义范翊范宏伟戚佳斌
Owner SHANGHAI DONGZHOU IND
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