Venturi‐Induced Triboelectric Nanogenerator for Industrial Exhaust Energy Harvesting and Self‐Powered Environment Monitoring

ABSTRACT Industrial exhaust carries abundant recyclable airflow energy, yet its complex, highly fluctuating and unstable characteristics hinder efficient harvesting. Here, we present a Venturi‐induced triboelectric nanogenerator (VI‐TENG), which leverages the pressure gradient generated by the Venturi effect to achieve high‐efficiency conversion of airflow energy into electricity. It is important that the rolling contact design of VI‐TENG achieves an ultralow starting torque of 0.7 N·cm, enabling start‐up at 1.1 m s −1 and delivers a high average power density of 11.16 W m −3 . Remarkably, it maintains stable output across a range of temperature and humidity conditions and retains 95.1% of its initial performance after more than 50 000 cycles. Furthermore, develop an in situ self‐power hygrothermograph, anemometer and carbon monoxide environment monitoring system. This design offers a practical route to expand industrial exhaust energy harvesting and in situ self‐powered environment monitoring.