Flexible TiCT-Polyurethane Electrodes for Versatile Wearable Applications.

With the development of science and technology, wearable electronics are increasingly widely used in medical, environmental monitoring, and other fields. Thus, the demand for flexible electrodes is increasing. The two-dimensional material TiCT has attracted much attention in the manufacture of flexible electrodes due to its excellent mechanical and electrical properties. However, the brittleness of pure TiCT films has become a major obstacle for their use as flexible electrodes in wearable devices. Therefore, solving the brittleness problem of flexible electrodes based on TiCT while maintaining the excellent performance of TiCT has become an urgent problem. To solve this problem, TiCT was compounded with waterborne polyurethane (WPU), and a TiCT-WPU composite film with a hierarchical structure was constructed by evaporation-assisted self-assembly. The TiCT-WPU composite film not only retains the excellent electrical conductivity of TiCT (100 S m) but also has flexibility (20 MJ m). Furthermore, the TiCT-WPU composite film is applied to functional devices such as contact pressure sensors and non-contact proximity sensors. Finally, the TiCT-WPU composite film wearable device demonstrates its practical application potential in the field of wearable devices.