Fig. 6: Application properties of the energy ball.
From: Shadow enhanced self-charging power system for wave and solar energy harvesting from the ocean
a Intensity of wave influence on output of shadow-tribo-effect nanogenerator (S-TENG) in energy ball. b Short-circuit current density (Jsc) and power density of S-TENG in energy ball with various loads. c The measured Jsc and voltage of the S-TENG in the energy ball before and after being rectified. d Energy ball charging curve under single illumination (Shadow), illumination mixed wave (Shadow + Wave) and single wave (Wave). Inset is electric circuit of the S-TENG based self-charging power system and load. e Circuit management of S-TENG based self-charging power system applies in electrolysis of seawater. f Four energy balls are connected in series to charge 5 fiber-supercapacitors (F-SCs) in series and then discharge the F-SCs by seawater splitting. Inset is the four energy balls working together.
