Hydrated Tungsten Trioxide Applied for Electrochromic Film

Hydrated tungsten trioxide can be used to prepare electrochromic film and thus be applied to architectural glass. In recent years, this new type of smart heat insulation material is more and more widely applied to large-area glass. Therefore, experts are exploring ways to improve the electrochromic properties of tungsten trioxide nano powder.

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Experts mainly improve the electrochromic properties of tungsten trioxide nano particles through various film-forming process optimization schemes, and explore the advantages and disadvantages of different film-forming processes. Finally, experts develop a low-cost solution film-forming process that is most likely to be industrialized. Experts changed the hydrothermal solvent composition, reduced the hydrothermal reaction temperature, and shortened the hydrothermal reaction time to construct a three-dimensional multi-stage structured hydrated tungsten trioxide electrochromic thin film grown from seed crystals, in order to improve the electrochemical reaction rate and electrochromic performance by eliminating the barrier effect of the dense seed layer on electrons.

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