Fig. 2: Power generation performance of the flexible porous d-Al2O3 HGs.
From: Enhancing hydrovoltaic power generation through heat conduction effects
a Open-circuit voltage response versus time curve at an ambient temperature of 295.6 K and a humidity of 22.3% RH. Inset: typical photograph showing the working state of the generator. b Scanning electron microscopy (SEM) image of a porous d-Al2O3 film. c Schematic depiction of the working mechanism of the evaporation-driven HG. d Variation of filling time, Vhoc, and Ihsc as a function of mass ratio of 200 and 20 nm Al2O3. e Measured Vhoc of the nanogenerator in different bending states. Inset: photographs illustrating the flexibility of the porous d-Al2O3-based power generator. f Output voltage and power of the power generator (size: width: 10 cm, height: 3 cm) as functions of the load resistance in a room environment.
