Fig. 2: Electrochemical measurements of samples.
From: The formation of unsaturated IrOx in SrIrO3 by cobalt-doping for acidic oxygen evolution reaction
a OER polarization curves of SI1C1, SI2C1, SI4C1, SI6C1, SI8C1, and SI samples with a mass loading of 0.025 mg/cm2 in 0.5 M H2SO4 and (b) corresponding Tafel slopes. The resistance values for SI1C1, SI2C1, SI4C1, SI6C1, SI8C1, SI and IrO2 were 3.9, 3.7, 3.6, 4.7, 3.2, 4.6 and 4.4 Ω, respectively. c Comparison of overvoltages and Tafel slopes of SI1C1, SI2C1, SI4C1, SI6C1, SI8C1, and SI samples. d Comparison of OER mass activity of SI1C1, SI2C1, SI4C1, SI6C1, SI8C1, SI and IrO2 samples. e Schematic diagram of PEM water electrolysis device. f PEM water electrolysis performance of SI6C1, IrO2, and SI samples, in set: PEM water electrolysis device photograph. g PEM water electrolysis stability of SI6C1 sample.
