Enhancement of Electrochromic Performance of W₁₈O₄₉ NWs Through Instantaneous Acceleration of Ion and Electron Transport via Ti₃C₂Tx (MXene) Addition

The field of flexible electrochromic materials has garnered considerable attention due to their potential applications in emerging technologies like smart windows, wearable displays, and electronic paper. Transition metal oxides (TMOs) show promise as electrochromic materials for smart windows and displays. However, the challenge remains to achieve simultaneous improvements in flexibility, coloration efficiency, and response time. Effective strategy to simultaneously boost the transport kinetics of electrons and ions in TMOs thin films is critical. One effective approach is the utilization of nanostructured materials in the form of 2D nanosheets, which significantly enhance electrical and ionic transport due to their increased surface-to-volume ratio. The high contact area between adjacent nanosheets facilitates even redistribution of induced strain, leading to improved mechanical strength and film flexibility.<br/>In this regard, we present advancements in the development of a promising material, the Mxene-W₁₈O₄₉ nanowires (NWs) composite, and its interfacial assembly for flexible electrochromic applications. These assembled nanometer-thick heterostructures exhibit well-balanced alignment and connectivity, enabling fast and efficient transport of ions and electrons, as well as superior mechanical and electrochemical stability. Furthermore, we demonstrate the feasibility of large-area flexible devices that can be seamlessly integrated onto curved and flexible surfaces, paving the way for future global electronics.<br/><br/>&lt;quillbot-extension-portal&gt;&lt;/quillbot-extension-portal&gt;&lt;quillbot-extension-portal&gt;&lt;/quillbot-extension-portal&gt;