Fig. 3: Series photocathode-photoanode unassisted water-splitting performance. | Nature Communications

Fig. 3: Series photocathode-photoanode unassisted water-splitting performance.

From: Integrated halide perovskite photoelectrochemical cells with solar-driven water-splitting efficiency of 20.8%

Fig. 3: Series photocathode-photoanode unassisted water-splitting performance.The alternative text for this image may have been generated using AI.

a Schematic representation of the unassisted PEC water-splitting system using halide perovskite PECs. b Co-plotted photocathode and photoanode polarization curves from most efficient devices showing a maximum theoretical operating current density of 22.7 mA/cm2. c 2-electrode unassisted water-splitting stability test showing degradation after 5 h. d Electrocatalyst-only electrolyzer stability at 20 mA/cm2. e Distribution of STH efficiency across five devices, with an average STH of 12.4 ± 0.7%.

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