An electrochromic device based on polythiophene and its derivatives and ionic liquid electrolyte and its application

Abstract

The invention provides an electrochromism device based on polythiophene and ramification thereof and ionic liquid electrolyte. The electrochromism device comprises a first electrode, a second electrode opposite to the first electrode and an electrolyte layer arranged between the first electrode and the second electrode. The first electrode is composed of a transparent conductive ITO glass substrate and the polythiophene and the ramification PProDOT-Me2 of the polythiophene which are deposited on the glass substrate. The second electrode is composed of a transparent conductive ITO glass substrate and inorganic metallic oxide vanadium pentoxide (V2O5) which are deposited on the glass substrate. Due to adoption of a new matching method, the electrochromism material PProDOT-Me2, the V2O5 and the ionic liquid electrolyte are organically combined so that the problem that the environment of water and oxygen insulation is needed in the process of assembly of the electrochromism device is solved and difficulty and cost of manufacturing the device are greatly reduced. The electrochromism device has the advantages that matching performance is outstanding, transmittance difference is high, service life is long, working performance is stable under high temperature and manufacture technology can be commercially popularized and the like. The electrochromism device is applicable to a car, aerospace and a building in an area in extreme climate.

Description

Technical field [0001] The invention belongs to the technical field of electrochromic devices, and specifically relates to an electrochromic device based on polythiophene and its derivatives and an ionic liquid electrolyte and its application. Background technique [0002] Electrochromism refers to the phenomenon that the optical properties of materials (reflectance, transmittance, absorption, etc.) undergo stable and reversible chemical changes under the action of an external electric field, and appear as reversible changes in color or transparency in appearance. Materials with electrochromic properties are called electrochromic materials, and devices with controllable color changes made from such materials are called smart or electrochromic devices (ECD). [0003] The electrochromic window can selectively absorb or reflect external heat radiation and prevent internal heat diffusion under the action of an electric field, so it can reduce a large amount of energy consumed by office...

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Problems solved by technology

[0004] However, in the field of electrochromic windows at present, there are strict requirements on the packaging of devices and high assembly costs; the cycle life of devices is not long enough, and the electrochemical performance is not stable enough; the electrolyte inside the device is flammable and pollutes the environment when it is broken; Urgent technical problems that are clearly affected

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