Yellow Tungsten Oxide Electrochromic Film Applied for Electrochromic Window

Yellow tungsten oxide electrochromic film can be used to assemble an electrochromic window - an environmentally friendly smart window that can provide thermal insulating performance to achieve the energy saving effects. But do you know what the working principle of an electrochromic device is?

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The working principle of electrochromic device: The electrochromic device works by applying a certain voltage between two conductive layers, and electrons and ions in the electrolyte are simultaneously injected into the electrochromic layer (i.e., the tungsten trioxide film layer) due to the applied voltage, and it is colored by an electrochemical reaction of redox, and the ion storage layer functions to store the corresponding counter ions in the oxidation-reduction reaction of the tungsten trioxide electrochromic film, thereby maintaining the charge balance of the entire system. When a reverse voltage is applied, electrons and ions are detached from the colored tungsten trioxide electrochromic film to cause bleaching.

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