Fig. 3: Structure and electric generation of wf-layer.
From: Multistage coupling water-enabled electric generator with customizable energy output
a The voltage and current output of wf-layer (3 × 6 cm, width × length). The output can sustain 40,000 s under asymmetrical humidity (90% RH and 25% RH, the same below). Left inset exhibits the structure diagram of the wf-layer. Right inset shows the asymmetrical water absorption of wf-layer before and after being exposed in asymmetrical humidity. b Moisture absorption and desorption kinetics for CaCl2 loaded region of wf-layer at 25 °C. c Voltage and current output of wf-layer (3 × 6 cm) in response to variation in RH in high RH side (25% RH for low RH side). d Bar graph of electricity performance of wf-layer (3 × 6 cm) with different CaCl2 load ratio. e Current retention of wf-layer (3 × 6 cm) for different circulations. The wf-layer was dried by being placed at 80 °C for 1 h, and the output of the dried wf-layer can be restored by absorbing water again. f, g Voltage and current output in response to variation in length with the fixed width of 3 cm (f) and variation in width with the fixed length of 6 cm (g) under asymmetrical humidity. h Voltage, current and volumetric power density of wf-layer (18 × 6 cm, crimped state) with different electric resistance. Inset displays the schematic of circuit. Source data are provided as a Source Data file.
