Fig. 4: Analysis of influencing factors of power generation performance of the SSEG. | Nature Communications

Fig. 4: Analysis of influencing factors of power generation performance of the SSEG.

From: Ion-engine hydrogel based solar desalination for water-electricity cogeneration with milliampere level current

Fig. 4

A Current-voltage curve of a single SSEG under AM1.5G illumination, with an inset showing the device schematic. The shaded area represents theoretical power output. B Voc and Jsc output from the SSEG over 24 h in artificial seawater under AM1.5G illumination. C Comparison of power generation performance using different hydrogel compositions. D Comparison of power output between the SSEG with a hierarchical structure and unlayered devices, with an inset showing the corresponding schematic diagram. E Evaporation rates, power output, Voc, Jsc, and osmotic energy (power density) of the SSEG compared to those of averages reported for existing water-energy cogeneration devices14,15,36,37,38,39,40,41,42,43,44,45. F Power generation performance of the SSEG under different solar illumination intensities. G Power generation performance of the SSEG in different liquids. H CV curves at scan rates of 10–100 mV s−1. I Schematic depiction of the working mechanism of the SSEG. J Numerical simulation of the Na+ and Cl− ion concentration distribution in the SSEG. All error bar represents the standard deviation of three-time measurements.

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