Fig. 3 | Nature Communications

Fig. 3

From: Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water

Fig. 3

TiO2|CsPbBr3|m-c|GS PEC performance in water. a Incident photon-to-current efficiency (IPCE) measured in aqueous 0.1 M KNO3 solution with the pH adjusted to 12 with KOH; electrode was subjected to monochromatic light irradiation at 1.23 VRHE. b Photographs of the PEC cell under operation, showing H2 and O2 gas bubbles evolving from the counter electrode (Pt) and the photoanode, respectively. c Chronoamperometric trace recorded at an applied potential of 1.23 VRHE in KOH electrolyte solution at pH 12.5, under chopped simulated solar light irradiation (AM 1.5 G, 100 mW cm−2). d Photographs of the photoanode immersed in the electrolyte solution after 18 h of continuous operation, showing oxygen bubbles evolving from the active area

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