Combined effects of electrode morphology and electrolyte composition on single H₂ gas bubble detachment during hydrogen evolution reaction.

ABSTRACT: During the hydrogen evolution reaction, H₂ gas bubbles form on the electrode surface, significantly affecting electrochemical processes, particularly at high current densities. While promoting bubble detachment has been shown to enhance the current density, the mechanisms governing gas bubble detachment at the electrochemical interface remain poorly understood. In this study, we investigated the interplay between electrode surface morphology and electrolyte composition on single H₂ gas bubble detachment during hydrogen evolution reaction (HER). Using well-defined Pt microelectrodes as model systems, we systematically modify and enhance their surface roughness through mechanical polishing to investigate these effects in detail. By modulating the Marangoni effect throug

SUBMITTER: Park S 

PROVIDER: S-EPMC11962861 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature