20.500.12556/RUL-169071 Bubble trouble quantifying the effects of bubbles on the electrochemical interface The accumulation of electrochemically produced bubbles is inevitable in gas-evolving reactions and can induce potential losses by theoretically increasing activation, concentration, and ohmic overpotentials. These effects are often either overstated or completely neglected in the literature, which complicates the accurate analysis of experimental results for gas evolution reactions. This study systematically identifies and quantifies the overpotential losses induced by bubbles by combining experimental results for hydrogen (HER) and oxygen evolution reactions (OER), obtained using the rotating disk electrode (RDE) technique, with simulations based on a two-dimensional transmission line model. Our results show that ohmic overpotential is the primary cause of apparent activity loss due to bubbles in RDE. This effect leads to catalyst activity misestimates exceeding 2 orders of magnitude, and Tafel slope errors of 100% at higher currents if left uncorrected. By identifying these effects, this work provides a robust framework for mitigating inaccuracies and improving the characterization of electrocatalysts for gas evolution reactions. oxygen evolution reaction hydrogen evolution reaction bubbles rotating disk electrode uncompensated resistance electrical properties evolution reactions polarization radiology elektrokemija reakcije sproščanje vodik kisik true false true Angleški jezik Slovenski jezik Članek v reviji 2025-05-09 13:36:04 2025-05-09 13:36:05 2025-05-10 04:10:33 0000-00-00 00:00:00 2025 0 0 Str. 6380–6385 iss. 8 Vol. 15 Apr. 18, 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 544.5/.6 2155-5435 10.1021/acscatal.5c00144 234585603 logar-et-al-2025-bubble-trouble-quantifying-the-effects-of-bubbles-on-the-electrochemical-interface.pdf logar-et-al-2025-bubble-trouble-quantifying-the-effects-of-bubbles-on-the-electrochemical-interface.pdf 1 6A21F1DD63C54870FC21BE4055DD5E6F bf78f6f727b1232e3c62424642f4dbc2014477fe00af6651143349c1c0d8ca5e eef8582f-2cc8-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=210217 https://pubs.acs.org/doi/10.1021/acscatal.5c00144 1 97ace1c5-2cc8-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=210216 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0