A droplet-based multi-position and multi-layered triboelectric nanogenerator for large-scale raindrop energy harvesting

The triboelectric nanogenerator (TENG) is an emerging technology proven to have great potential in rainwater energy harvesting. However, most studies focused only on single-position droplets, and there needs be more research multi-position, large-scale energy. In this work, we develop a multi-position multi-layered (MM-TENG) for raindrop structure can harvest multiple droplets the horizontal direction. water reservoir with holes convert large amount of into ensuring output performance TENG. improves efficiency space utilization, as demonstrated by current integration calculation, where double-layered increases 15.27% three-layered 38.2% at same height. Finally, successfully lit up 50 LEDs drove commercial calculator power generated MM-TENG. This work provides practical guide collecting self-driven sensing environment.