Fig. 3: Characterization of NiFe-LDH catalysts and PEC performances of passivated organic-photoactive-layer-based photoanodes. | Nature Communications

Fig. 3: Characterization of NiFe-LDH catalysts and PEC performances of passivated organic-photoactive-layer-based photoanodes.

From: High-performance and stable photoelectrochemical water splitting cell with organic-photoactive-layer-based photoanode

Fig. 3

a, b SEM images. c XRD θ–2θ scan pattern. d EDS spectrum of NiFe-LDH structures on Ni foil. e Comparison of current density–potential curves of Ni/eu@nfOP and LDH/Ni/eu@nfOP in 1 M NaOH electrolyte (pH 13.6) under AM 1.5 G illumination (100 mW cm−2). f ηhalf−STH of LDH/Ni/eu@nfOP measured in a two-electrode configuration. g Chronoamperometry measurement and comparison of nfOP, Ni/eu@nfOP, and LDH/Ni/eu@nfOP in 1 M NaOH electrolyte (pH 13.6) at 1.3 V vs. RHE under AM 1.5 G illumination (100 mW cm−2). h Faradaic efficiencies for photoelectrochemical H2 and O2 production and the H2/O2 ratio at 15.4 mA cm−2 (approximately 1.3 V vs. RHE) using LDH/Ni/eu@nfOP. i Abundance of 32O2 and 34O2 during photoelectrochemical water splitting in 18O-labeled water (H218O, 10 vol%) added 1 M NaOH solution using LDH/Ni/eu@nfOP.

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