UV-Protective and Flexible Electrospun Nanofiber-Based Pressure Sensor for Outdoor Activity Monitoring

The development of flexible pressure sensors with ultraviolet (UV) shielding property is of great significance for outdoor activity monitoring devices. In this work, we propose a flexible pressure sensor based on polyacrylonitrile (PAN)/ TiO2/MXene nanofiber membrane by combining the electrospinning and dip-coating methods, and the addition of TiO2 nanoparticles (NPs) and MXene flakes greatly improves the UV-protective performance of the sensor. The high ultraviolet protection factor (UPF) of the proposed sensor is ~24716, and it has a relatively stable transmittance for UV light of different power. This UV-protective sensor not only shows excellent pressure sensitivity (0.15148 kPa−1) in a wide range of 350 kPa but also has excellent breathability as well as good cycle stability. The results show that the PAN/TiO2/MXene sensor has excellent UV protection performance and pressure sensing ability, which can be used for outdoor activity monitoring. It can monitor various sports conditions when people are outdoors, demonstrating broad application prospects in fields such as intelligent sports and wearable electronics.