Use of Different Metal Oxide Coatings in Stainless Steel Based ECDs for Smart Textiles

Electrochromism is the ability of a material to selectively change its coloration under influence an external electric current/potential and maintain it even after power source has been disconnected. Devices that use such mechanism are known as electrochromic devices (ECDs). Over years, significant effort invested into development flexible ECDs. Such tapes or fibers can be used smart textiles. Recently, we utilized novel geometrical approach in assembling which does not require optically transparent electrodes. The so-called inverted sandwich ECD configuration employ various color-changing mechanisms, e.g., intercalation, redox reactions electrolytes on electrode surfaces. One most frequently metal oxides WO3. However, other with different responses also exist. In this paper, explore V2O5 TiO2 metal-tape-based ECDs compare their performance WO3-based devices. Morphological features oxide thin layers were investigated scanning electron microscopy (SEM), was electrochemically spectroscopically. We demonstrate well-established preparation techniques (e.g., sol–gel synthesis) along coating approaches dipping) adequate prepare nontransparent fiber Depending oxide, exhibiting patterns assembled. showed little response, while much better achieved case WO3