5 papers · 1 filter
To jump or not to jump: Adhesion and viscous dissipation dictate the detachment of coalescing wall-attached bubbles
Çayan Demirkır, Rui Yang, Aleksandr Bashkatov +3
Bubble coalescence can promote bubble departure at much smaller sizes compared to buoyancy. This can critically enhance the efficiency of gas-evolving electrochemical processes, su…
Electrolyte spraying within H bubbles during water electrolysis
Aleksandr Bashkatov, Florian Bürkle, Çayan Demirkır +10
Electrolytically generated gas bubbles can significantly hamper the overall electrolysis efficiency. Therefore it is crucial to understand their dynamics in order to optimise water…
Life beyond Fritz: On the detachment of electrolytic bubbles
Çayan Demirkır, Jeffery A. Wood, Detlef Lohse +1
We present an experimental study on detachment characteristics of hydrogen bubbles during electrolysis. Using a transparent (Pt or Ni) electrode enables us to directly observe the…
Threshold Current Density for Diffusion-controlled Stability of Electrolytic Surface Nanobubbles
Yixin Zhang, Xiaojue Zhu, Jeffery A. Wood +1
Understanding the stability mechanism of surface micro/nanobubbles adhered to gas-evolving electrodes is essential for improving the efficiency of water electrolysis, which is know…
Performance enhancement of electrocatalytic hydrogen evolution through coalescence-induced bubble dynamics
Aleksandr Bashkatov, Sunghak Park, Çayan Demirkır +4
The evolution of electrogenerated gas bubbles during water electrolysis can significantly hamper the overall process efficiency. Promoting the departure of electrochemically genera…