A self-powered triboelectric sensor for basketball monitoring

Recently, flexible sensors have attracted attention in sports monitoring. Here, we developed a novel PDMS@MXene@BaTiO3-based triboelectric nanogenerator (PMB-TENG) by using various processing techniques, including ion treatment and dielectric regulation, for energy harvesting and basketball motion sensing. The polyethylene terephthalate (PET) film has achieved improved triboelectric properties through ion treatment. The pressed PET film and PDMS@MXene@BaTiO3 film serve as the triboelectric layers. In detail, the improvement in the PMB-TENG output in open-circuit voltage (Voc), short-circuit current (Isc), and transferred charge (Qsc) was more than 5.2 times (from 31.2 to 164.4 V), 4.4 times (from 0.96 to 4.08 µA), and 3.1 times (from 9.72 to 31.2 nC), respectively, which demonstrates the function of ion modification. When the resistance value of the load reaches 70 MΩ, the output power of the PMB-TENG reaches its maximum of 2.4 W/m2. The PMB-TENG can be installed on the foot, knee, and wrist to monitor the human posture in basketball. This research will promote the development of basketball monitoring equipment.