Nano tungsten trioxide can be used to prepare electrochromic film. WO3 is the most studied inorganic electrochromic material, which has the advantages of pure color, stable chemical properties and strong adhesion to the substrate. However, the conventional WO3 also has the disadvantages of slow transition speed, low coloring efficiency, single color change and short cycle life.
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In this regard, experts said that WO3 nanomaterials can be prepared in combination with nanotechnology to solve the above problems. Because nano WO3 material has many advantages that traditional WO3 materials do not have, such as large specific surface area, good electrical conductivity, rapid discoloration, good optical simulation performance, high coloring efficiency and good cycle performance, so tungsten trioxide nano particles can be applied to production of the electrochromic device. And tungsten trioxide electrochromic device is expected to be applied to building energy-saving windows, automotive anti-glare rearview mirrors, display devices, variable transmittance glasses, automotive sunroofs, and surface temperature control of spacecraft.
