Contact line dynamics modulated by electrode roughness determines bubble detachment size
Weikang Yang1, Dongxu Gu2, Xin Liu1
1School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China. wkyang@stu.cqu.edu.cn.
Chemical Communications (Cambridge, England)
|July 10, 2025
Abstract:
Facilitating bubble detachment during water electrolysis significantly improves process efficiency. This study investigates hydrogen bubble contact line dynamics on nickel electrodes through high-speed imaging, identifying two distinct wetting modes: sliding and rolling. Surface roughness governs bubble detachment size by mediating the relative weights between these modes.
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