Preparation method of electrochromic thin film and electrochromic device

An electrochromic device and electrochromic technology, applied in the direction of instruments, nonlinear optics, optics, etc., can solve the problems of difficult electrochromic films, difficulty in producing large-sized, special-shaped color-changing windows, and high production costs. Achieve the effects of easy assembly of special shape devices, low cost, and easy post-processing

Active Publication Date: 2019-08-06
逸莱创(北京)智能材料科技有限公司
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Problems solved by technology

One method is to deposit the electrochromic film on the surface of the conductive substrate by physical or chemical methods. The material is dissolved in a gel or liquid electrolyte and filled between two conductive substrates. Although this technology reduces production costs, it is difficult to produce large-sized, special-shaped color-changing windows

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  • Preparation method of electrochromic thin film and electrochromic device
  • Preparation method of electrochromic thin film and electrochromic device
  • Preparation method of electrochromic thin film and electrochromic device

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Embodiment Construction

[0030] The technical solutions of the present invention will be described below in conjunction with specific embodiments of the present invention, which are only used as explanations of the present invention rather than limitations.

[0031] A kind of electrochromic thin film of the present invention is prepared by following scheme:

[0032] 2g of polyvinyl alcohol, 0.5g of polymethyl methacrylate, put into ethanol / N,N-dimethylformamide mixed solvent (the amount of ethanol is 20mL, and the amount of N,N-dimethylformamide is 4mL) , were poured into a round bottom flask together and a magnetic stir bar was added. Place the round bottom flask in a collector stirrer, turn on the stirring function and set the temperature to 80°C to start heating. After the solid substance is completely dissolved into the liquid to form a viscous clear solution A, stop heating and cool to room temperature.

[0033] Add 5mL of γ-butyrolactone (or ethanol, propylene carbonate, ethylene carbonate or ...

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Abstract

The invention discloses a method for preparing an electrochromic film and an electrochromic device. The method for preparing the electrochromic film comprises the steps that an electrochromic material is dissolved in a polymer solution of 50-200 g / L to obtain a macromolecular composite electrochromic solution with the electrochromic material concentration of 0.05-0.2 mol / L, the macromolecular composite electrochromic solution forms a solution layer with the thickness of 50-500 microns, and after the solvent in the solution layer is removed, the electrochromic film is obtained. The technical problems of high preparation cost, difficult processing, difficult preparation due to large size and the like of an existing electrochromic film are solved. Compared with a magnetron sputtering technology of an existing electrochromic film preparation technology, the method has the advantages of being low in cost and simple in manufacturing process, needing simple required devices and the like. Compared with a filling technology, the method has the advantages that later processing is easy, a device assembly process is simple, special-shaped devices are easy to assemble and the like.

Description

technical field [0001] The invention relates to the field of electrochromic polymer electrochemistry, in particular to a preparation method of an electrochromic thin film and an electrochromic device. Background technique [0002] Electrochromic materials can change their own color under a certain voltage, thereby changing the absorption or reflection of light, and achieving the purpose of adjusting light and temperature. In 1961, Deb discovered for the first time that tungsten trioxide thin films could switch between colorless and blue under the action of an electric field. Based on this discovery, Swedish scientist C.G.Granqvist and American scientist C.M.Lampert proposed a new type of energy-saving electrochromic window concept. Since then, the preparation of electrochromic materials and devices has attracted the attention of many researchers. [0003] Electrochromic materials can be divided into inorganic and organic in terms of structure. Inorganic electrochromic mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1516
CPCG02F1/15G02F2001/164
Inventor 杨树威范江峰李梅王海龙
Owner 逸莱创(北京)智能材料科技有限公司
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