Hydrated Tungsten Trioxide Electrochromic Film

Hydrated tungsten trioxide can be used to prepare electrochromic film as the hydrated WO3 tends to have a two-dimensional structure that provides additional permeation channels for ion transport and a high specific surface area. In addition, it is also because the crystal water in the hydrated WO3 can accelerate the ion transport efficiency, thus improving the electrochromic performance. Therefore, not only the tungsten trioxide of hexagonal phase, but also the hydrated tungsten trioxide attracts the attention of researchers.

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Some experts have adopted a low-boiling environmentally friendly solvent (ethanol) for hydrothermal reaction, which can not only greatly reduce the reaction temperature, but also shorten the reaction time. And the obtained film is hydrated WO3 film. The hydrated water of hydrated tungsten trioxide nano particles has a favorable effect on the transport of the electrolyte, so that it exhibits excellent electrochromic properties. And therefore it has a very good application prospect in the field of electrochromism in the future.

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