A Stretchable Triboelectric Nanogenerator Based on Molybdenum Disulfide for Wearable Self-Powered Biomotion Monitoring

Herein, a stretchable triboelectric nanogenerator using molybdenum disulfide (MoS
2
)@Ecoflex is firstly proposed and successfully developed for self-powered biomotion sensing applications. MoS
2
much improves the performance of the TENG, by providing a monolayer and high surface area. The monolayer acts as a charge trap, boosting high charge-trapping capability. The MoS
2
@Ecoflex nanocomposite accumulates more negative charge, which improves the performance of TENG. The developed TENG showed excellent performance, including power of 11.2 mW, sensitivity (50.86 V/KPa), and stretchability up to 230 % of the original length. Moreover, the TENG manifests a self-powered biomotion and an extraordinarily sensible response to finger, wrist, and ankle bending.