Abstract:
With the rapid development of microelectronics technology and flexible intelligent electronics, two-dimensional materials have good application potential in the field of flexible electronics due to their unique layered structure. In particular, MXene has attracted a lot of attention in the field of flexible sensing due to its good electrical conductivity and high hydrophilicity. However, pure MXene is extremely limited in the field of pressure sensing due to its limited interlayer distance. In this study, a rapid foaming technique was proposed to realize the preparation of porous structures. The pressure sensor was constructed by using the porous MXene/RGO composite material as the pressure-sensitive material, and the interdigitated electrode was designed as the electrode lead layer of the sensor. The experimental results show that the sensor has excellent pressure sensitivity performance, its detection range can reach 0~1. 7 MPa, the maximum sensor sensitivity can reach 130 kPa
-1, and the fast response time and release time are 82 ms and 63 ms, respectively, and it has good stability (≥1 800 cycles). At the same time, the application research shows that the pressure sensor has a wide range of application prospects in the fields of human motion monitoring, human-computer interaction, and medical monitoring.