Fig. 4: Mechanistic investigation on local reaction environment regulation and supersolidophobic property of Pt-I/Ti electrode. | Nature Communications

Fig. 4: Mechanistic investigation on local reaction environment regulation and supersolidophobic property of Pt-I/Ti electrode.

From: Supersolidophobic Pt catalyst for long-term natural seawater electrolysis with hydrogen production and magnesium extraction

Fig. 4: Mechanistic investigation on local reaction environment regulation and supersolidophobic property of Pt-I/Ti electrode.The alternative text for this image may have been generated using AI.

a COMSOL simulation of the pH distribution near the Pt/Ti and Pt-I/Ti electrodes under 100 mA cm−2. b Micro-region pH measurements as a function of distance during the HER process of Pt/Ti and Pt-I/Ti electrodes at 100 mA cm−2. Measurements were taken at least three times and the average pH values are presented with the standard deviation as error bars. c Interfacial pH swing calculated for Pt/Ti and Pt-I/Ti electrodes from the post-electrolysis open circuit potential decay transient. d, e Snapshots of classical MD simulations of electrolyte systems with or without iodine above the Pt exposure surface. f Number of OH- versus distance above Pt and Pt-I exposure surface from classical MD simulation results. g, h Schematic illustrations of Mg(OH)2 formation on Pt and Pt-I surfaces. Source data for Fig. 4 are provided as a Source Data file.

Back to article page