Electrochromism film with stable performance and preparation method thereof

Abstract

The invention belongs to the technical field of surface engineering, and particularly relates to an electrochromism film with the stable performance and a preparation method thereof. The film system structure of the film sequentially comprises a substrate, a conductive electrode, an ion storage layer, a transition layer, an electrolyte layer, a transition layer, an electrochromism layer and a transparent conductive layer from bottom to top, and the section of the film system is the transparent protective layer. According to the electrochromism film with the stable performance, the interface and the environment are blocked by depositing a protective layer on the section of the film system of the electrochromism film, the electrochromism film has the stable color change performance in the ground environment and the space environment, performance degradation cannot happen, and the good circular stability and environment stability are achieved. According to the electrochromism film, the transition layer is additionally arranged between the coloring layer and the electrolyte layer, on one hand, leakage current is lowered when the transition layer is adopted as an electron barrier layer,and the coloring memory effect is improved; on the other hand, the voltage value needed by electrochromism is lowered, and the circular stability is improved.

Description

technical field [0001] The invention belongs to the technical field of surface engineering, and in particular relates to an electrochromic thin film with stable performance and a preparation method thereof. Background technique [0002] Electrochromic technology can be widely used in architectural windows, automotive anti-glare rearview mirrors, aircraft portholes, and spacecraft thermal control fields. The application of electrochromism in the energy field to achieve the effect of saving energy consumption has great social significance and commercial value. [0003] The existing all-solid-state electrochromic thin film of inorganic materials is generally a five-layer structure with complementary anodic coloring and cathodic coloring materials, which are transparent electrode / cathode coloring layer / electrolyte layer / anodic coloring layer / transparent electrode (or reflective electrode), typically such as ITO / WO 3 / LiTaO 3 / NiO x / ITO(Al), which has excellent electrochromi...

AI Technical Summary

Problems solved by technology

However, due to the high applied voltage of the five-layer film system, it is easy to reduce the cycle stability of the electrochromic film, and it is easy to generate leakage current, resulting in the loss of Li + Decreased ion concentration to degrade electrochromic performance

In addition, in use, due to the H in the environment 2 O molecules and gas molecule impurities will enter the electrochromic film through the film layer interface, which will also lead to the degradation of electrochromic performance

Images