Fig. 6: Universal applicability of ISG across various electrolysis configurations.
From: Ion-selective interface engineering for durable electrolysis of impure water
a Schematic of the PEM/AEM mode seawater electrolysis. b Chemical structure of the anion-selective ISG used in the cathode coating. Optical and microscopic images of the Pt/C catalyst coated with anion-selective ISG at the cathode. Microscopic features of the ISG-coating are indicated by arrows. Scale bar: 50 μm. The inset shows the membrane electrode assembly (scale bar: 1 cm). c Chemical structure of the cation-selective ISG used in the anode coating. Optical and microscopic images of the IrOx catalyst coated with cation-selective ISG at the anode. Microscopic details of the ISG layer are highlighted by arrows, with a scale bar of 50 μm. The inset displays the membrane electrode assembly (scale bar: 1 cm). d Polarization curves of the PEM electrolyzer in RO-grade diluted seawater at 60 °C. e Voltage stability of the PEM system at 1.0 A cm−2 over 100 h. Inset table summarizes the operating parameters used in this work. f Polarization curves of the AEM electrolyzer in natural seawater at 80 °C with and without ISG. g Voltage stability of the AEM system at 200 mA cm−2 over 100 h. Inset table summarizes the operating parameters used in this work. Source data are provided as a Source Data file.
