Bubble Trouble: Quantifying the Effects of Bubbles on the Electrochemical Interface.

ABSTRACT: 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 bu

SUBMITTER: Logar A 

PROVIDER: S-EPMC12012731 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature