Fig. 3: Performance investigations.
From: High-entropy RuO2 catalyst with dual-site oxide path for durable acidic oxygen evolution reaction
a Representative LSV for RuO2-HEAE, RuO2-TM, as prepared RuO2 and commercial RuO2 in 0.1 M HClO4 at a scan rate of 5 mV s−1. b Comparison of apparent TOF of RuO2-HEAE, RuO2-TM, as prepared RuO2 and commercial RuO2. c Chronopotentiometric curve of RuO2-HEAE during the OER at 100 mA cm−2, showing the enhanced stability of the electrocatalyst in comparison with com. RuO2. The voltages were not IR compensated. d Corresponding Tafel slopes derived from LSV for RuO2-based catalysts. e Schematic of the PEMWE device. f I-V curves of PEMWEs the RuO2-HEAE and commercial RuO2 catalysts as anodes, commercial Pt/C as cathode. g I-V curves of PEMWEs the RuO2-HEAE at 80 °C (area: 5 cm2). h Operando EIS measurements of PEMWE. i Durability of RuO2-HEAE at 1 A cm−2 in the PEMWEs.
