Fig. 6: Application of strong-weak dual interface electrocatalysts in OWS and PEMWE. | Communications Materials

Fig. 6: Application of strong-weak dual interface electrocatalysts in OWS and PEMWE.

From: Strong-weak dual interface engineered electrocatalyst for large current density hydrogen evolution reaction

Fig. 6: Application of strong-weak dual interface electrocatalysts in OWS and PEMWE.

a OWS measurements with a symmetrical electrode system in 0.5 M H2SO4. (Inset: The digital image of a symmetrical electrode system, where the left side features the cathode catalyst releasing H2, and the right side features the anode catalyst releasing O2). b Potential of Pt@A&R-TiO2 || IrO2 and commercial Pt/C || IrO2 at different current densities. c Comparison of the OWS performance of the Pt@A9R1 || IrO2 at 10 mA cm–2 with recent reports. d Polarization curve of Pt@A9R1 || RuO2 and Pt/C || RuO2 in PEMWE. (Inset: Schematic diagram of a PEM electrolyzer). e Comparison of mass activity between Pt@A9R1 || RuO2 and Pt/C || RuO2 in PEMWE. f Chronopotentiometry curves at current density of 1.0 A cm−2 in PEMWE. g, h SEM images of the Pt@A9R1 || RuO2 and Pt/C || RuO2 cathode layers after stability tests.

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