Fig. 3: Properties of the Ni-SAC catalyst in a two-electrode flow cell.
From: Boosting electrochemical oxygen reduction to hydrogen peroxide coupled with organic oxidation

a Schematic diagram of the flow cell. b ORR polarization curves in the flow cell. c FE and yield rate of H2O2 in the voltage range of −0.8 V to −1.7 V. d Stability test of Ni-SAC at −1.7 V for 35 h. e Comparison of 2e− ORR performances with reported electrocatalysts in the flow cell. The two-electrode system constructed in the flow cell has no iR-compensation. The error bars are defined as standard deviation, and the centre of each error bar represents the mean value of the corresponding three independent experiments.