User talk:Md Halim Hossain

Self-powered Electrochromic Device
Electrochromic devices (ECDs) are often used in smart windows, displays, and other applications where adjustable transparency or color is desirable. However, the external power demand of conventional ECDs makes the device's practical applications ambiguous, especially, in rural areas where access to power supply is challenging.

The term "self-powered" indicates that the device can generate the electrical energy needed for its operation without relying on an external power source. This problem can be solved by incorporating energy harvesting technologies, such as solar cells, which allow the device to generate electrical power from ambient light. This harvested energy can then be used to drive the electrochromic switching. Yet, there are several drawbacks in this instance. For instance, they are dependent on sunshine, and still require a connection to external power sources in real-life practical applications, which increases costs and dependability concerns; and they are not always able to be used whenever and wherever desired. Therefore, the complexity and instability of electrochromic systems are increased by all of these problems.

To solve this problem, recently, self-powered ECDs have been invented using a potential gradient between two electrodes. Electrochromic electrodes are used as working electrodes and as counter electrodes, a suitable metal electrode is used in electrolyte medium. The combined two electrodes and electrolyte system show the behaviour of a primary battery and the generated open-circuit output voltage is used as the external power source. Md Halim Hossain (talk) 07:22, 18 January 2024 (UTC)