Hybrid Triboelectric‐Electromagnetic‐Piezoelectric Wind Energy Harvester toward Wide‐Scale IoT Self‐Powered Sensing

Abstract Wind energy is the most promising alternative to fossil fuels as a clean, nonpolluting, and renewable source of energy. However, how to achieve stable and efficient harvesting of wind energy has been a major challenge. Here, a triboelectric‐electromagnetic‐piezoelectric hybrid wind energy harvester (TEP‐WEH) based on the cantilever is proposed. The TEP‐WEH achieves a power density of 62.79 mW (m 3 rpm) −1 at a 3 m s −1 wind speed, attributable to a rational and optimized structural design. In addition, owing to the soft contact strategy of the TENG module, the TEP‐WEH provides excellent durability and drivability. The harvester is demonstrated to successfully and continuously light a commercial lighting bulb rated at 5 W and provide an energy supply for self‐powered sensing. This work provides an efficient solution for wind energy harvesting and wide‐scale self‐powered IoT sensing.