Fig. 2: Effect of nanobubble coverage on the onset potential of OER. | Nature Communications

Fig. 2: Effect of nanobubble coverage on the onset potential of OER.

From: Macroscopic bubble generation promoted by nanobubble seeds as a traceless anti-fluctuation strategy for water splitting

Fig. 2

a Time-dependent reflectivity variation with NBs’ adsorption, top: differential images of surface plasmon resonance at 0, 30, 60, 180, and 300 s (Scale bar = 400 μm). b Atomic force microscopy image of the electrode surface (3 × 3 μm2) with adsorption of NBs after 300 s. c OER Polarization curves of the Pt/Au electrodes (1 × 1 cm2) with different NBs’ adsorption time (colored) and without NBs’ adsorption (black) (with 100% iR correction and Rs = 3.73 ± 0.108 Ω. The non-iR corrected voltammograms are provided in Supplementary Fig. S30). d Plots of current density (statistically derived from (c)) and NB coverage at 1.75 V vs RHE. e In situ surface plasmon resonance microscope (SPRM) observation of macrobubble (MB) formation/detachment and the remaining gas nuclei. Source data for (a, c, d) are provided as a Source Data file. For further details of (e), we refer to Supplementary Movie 1.

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