Conventional sensors are generally composed of thin films that can be easily damaged by external impact. As interest in wearable electronics continues to increase, a triboelectric nanogenerator (TENG) that uses a conductive liquid as a single electrode has attracted considerable attention. Even though a liquid-based TENG is attractive for a power supply to drive a wearable device due to its intrinsic shape-adaptability, a mechanical weakness is problematic. To improve its weak mechanical robustness, the smart rheology of shear thickening fluid (STF) is benefitted. Shear thickening fluid is a smart material that is adapted to many different applications. TENG is one of the application areas for STF.