Abstract

Electrochromic energy storage systems have high potential value and competitiveness. However, the problems related to the operation of such electro-optic devices are still not fully solved. The aim of our study was to increase the operational lifetime of electrochromic devices using preoperational electrical action. We discovered an effect of electrical formation of electrochromic devices based on tungsten oxide previously observed only for other types of chemical current sources. The electrical formation comprised multistage action of galvanostatic stabilized current in the stability range of the oxidation–reduction potential. The new approach made it possible to reduce the power consumption of electrochromic devices in the coloration and bleaching stages by approximately 3 times and by 30%–40%, respectively, and achieve an increase in their operational lifetime by 2–3 times.

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