Nano Tungsten Oxide Applied for Large Area Electrochromic Device

Nano tungsten oxide is an important raw material for preparing large area electrochromic device. As you may have known, whether the discoloration is uniform or not will affect the electrochromic performance of the prepared device, so a device with discoloration uniformity is an ideal device. In fact, large-area electrochromic devices may exhibit discoloration unevenness. So, how to solve the problem of uneven discoloration of large-area electrochromic devices of tungsten oxide? Experts propose the following options:

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A conventional liquid electrolyte is replaced with a gel electrolyte or a solid electrolyte. The liquid electrolyte has high conductivity and good fluidity. However, due to problems such as device packing of liquid electrolyte, liquid freezing, and uneven coloring caused by gravity, a device form of a solid electrolyte is often used in product development. In the all-solid-state electrochromic device, the electrochromic layer and the ion storage layer are attached to the transparent conductive substrate in a thin film state, so that the phenomenon of uneven discoloration over a large area can be partially alleviated.

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