A novel triboelectric generator based on wind-induced film vibration for harvesting breeze energy

Abstract

Environmental pollution and energy crisis have propelled the exploration of sustainable energy technologies. Wind power generation has garnered significant attention due to its abundant resources and pollution-free characteristics. However, the current wind turbines are limited by their complex structure, resulting in a relatively high cut-in wind speed (>5 m/s) and low power density per unit volume. This makes it difficult to efficiently harvest low-speed wind energy on a large scale. A wind-induced film vibration triboelectric generator (WV-TENG) incorporating a stackable dual-blade structure is engineered to achieve the harvesting of breeze energy (2–5 m/s) and high output power. Experimental results demonstrate that the central fixed structure generates 434 V open-circuit voltage, 118 μA short-circuit current, and 35.5 mW peak power at 5 m/s wind speed. The parallel-connected multi-unit design significantly enhances output performance, achieving a 95 % surge in peak current (230 μA) with four generation units. This stackable structure enables large-scale deployment in urban environments, providing an innovative solution for low-speed wind energy utilization.