Synthesis of 2D Ti₃C₂T MXene and MXene-based composites for flexible strain and pressure sensors

As an important device in flexible and wearable microelectronics, flexible sensors have gained a lot of attention due to their wide application in human motion monitoring, human-computer interactions and healthcare fields. The preparation of flexible sensors with superior sensing performance and a simple process is still a challenging goal pursued by scientific researchers all over the world. The emerging two-dimensional (2D) Ti₃C₂T MXene material, having the characteristics of high metallic conductivity, good flexibility, excellent dispersibility and hydrophilicity, is suitable for flexible sensors as a conductive sensing material. In this review, the preparation strategies of Ti₃C₂T are summarized. Combined with its research progress in flexible sensors, the preparation methods, sensing performance, working mechanism and applications of Ti₃C₂T flexible sensors with different device architectures are reviewed.