The Flexible Electronic Reflection Smart Windows for Automobiles and Architecture
Anqing Xu, Xin Jiang, Zesheng Zhang, Long Yuan, Yu Duan · ACS Applied Materials & Interfaces · 2025
We introduce an in situ polymerization route of electrolytes for reversible metal electrodeposition (RME) devices for the first time. This method addresses the issue that initial high-viscosity gel electrolytes are difficult to use in large-area flexible devices, advancing the practical application of flexible electronic reflection devices (F-ERD). The in situ polymerized quasi-solid-state electrolytes significantly enhanced the mechanical properties and safety of devices. Our F-ERD exhibits an average transmition modulation range of 81.6% in the visible spectrum and an average reflectivity of 88.3% in its reflective state, with only a 9.3% reduction in visible-light modulation range after 1000 bending cycles. Notably, we have successfully fabricated the largest flexible RME device (171 cm 2 ) to date. This study also pioneers the use of flexible RME-based smart windows in automotive panoramic sunroof designs. Energy consumption simulations reveal that F-ERD offers substantial energy-saving potential across various seasons and regional conditions. Furthermore, outdoor temperature experiments demonstrate superior temperature management capabilities, with rooms equipped with F-ERD being 12.4 °C cooler than those with conventional glass windows. This research lays a foundation for applying RME technology on flexible surfaces, promising significant impacts on energy-efficient vehicles and environmentally friendly buildings.