fig6

Figure 6. (A) Output performance of devices assembled with spun fiber mats obtained from solutions with different solid content; (B) Effect of water droplet size on the output of the H-TENG device; (C) Schematic diagram of the microscopic contact between the porous fibrous triboelectric material layer and a water droplet. Effect of the tilt angle between the motion height of the water droplet at different dimensional positions and the spherical bottom on the output performance of the H-TENG device: current (D), voltage (E), and charge (F), with error bars in (F) representing the standard deviation (SD), and three independent replicate experiments were performed for each condition (n = 3); Results from Finite Element Method (FEM) simulations investigating the influence of key parameters on the performance of the H-TENG: (G and H) Electric field distribution and induced charge density of water droplets with different sizes. Evolution of electric potential distribution of smaller (G-G₄) and larger (H-H₄) water droplets during their movement. H-TENG: Hemispherical triboelectric nanogenerator.