Engineering researchers have developed a novel self-powered and flexible multi-color electrochromic device (ECD) that could be used in a wide range of applications, such as smart windows and displays. The device is composed of a flexible polyimide substrate, a graphene-based transparent electrode, and a few layers of electrochromic materials. This structure allows the device to be self-powered, meaning that it does not require any external power source or battery to operate. Moreover, the device can be controlled to display a wide range of colors and is able to maintain its color for a long period of time. This is a significant advancement in the field of smart windows and displays, and it could lead to new possibilities in the field.

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source: Phys.org