Color-changing Performance of Electrochromic Devices Based on WO3/Pt-NiO Electrodes
The application of electrochromic devices(ECDs)in smart windows provides new solu-tions for energy conservation and environmental protection.WO3/Pt composite films for electrochromic cathodes were prepared through a combination of hydrothermal and electrodeposition methods.WO3/Pt composite films of different deposition times were characterized and their electrochromic properties were examined.Next,NiO thin films were prepared by electrodeposition as electrochromic anodes.WO3/Pt-NiO electrochromic devices were constructed with WO3/Pt composite films and NiO films as color changing cathodes and anodes,respectively.The WO3/Pt-NiO electrochromic device has a relatively fast response time(coloring/fading rate of 18.84/29.62 s)and a good optical modulation range(47％ at 630 nm).Its de-signed ECD has the characteristics of large optical modulation,high coloring efficiency,and fast switching speed.These characteristics make WO3/Pt-NiO electrochromic devices a very promising candidate for smart windows in lighting control and energy-saving applications,and their use as color-changing smart windows has broad application prospects in fields such as architecture,aircraft,and automobiles.
compositescolor-change performanceelectrochromismWO3/Pt composite film
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