Charles Brussieux, Philippe Viers
This paper deals with an experimental study on millimetre-size electrochemically evolved hydrogen bubbles. A method to generate gas bubbles controlled in number, size at detachment and place on a flat electrode is reported. Partially wetted composite islands are implemented on a polished metal substrate. As long as the island size is lower than a limit depending on its wettability, only one bubble spreads on the island and its size at detachment is controlled by the island perimeter. The composite, a metal-polytetrafluoroethylene (Ni-PTFE), is obtained by an electrochemical co-deposition process. Contrary to predictions of available models for co-deposition, at current densities beyond Ni2+ limiting current density, the mass ratio of PTFE in the deposit strongly increases. A mechanism is proposed to describe co-deposition when hydrogen bubbles are co-evolved. The study highlights the intricate balance between wettability, bubble dynamics, and material composition in optimizing gas bubble release for various applications.
@article{f4bc6a7b-7861-411c-8960-a97062f5ae83,
title={Controlled electrochemical gas bubble re},
author={Charles Brussieux and Philippe Viers},
year={2026},
language={en}
}TY - JOUR TI - Controlled electrochemical gas bubble re AU - Charles Brussieux AU - Philippe Viers PY - 2026 LA - en ER -
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