Abstract
In this paper, we report controlled gas bubble formation during electrolysis by means of electrode surface shaping in the form of rnicrocavity electrodes (MCEs). A theoretical model is given to support the concept of using electrode surface shaping for obtaining reproducible nucleation of gas bubbles during electrolysis. The gas bubble evolution process is monitored by simultaneous measurement of overpotential and impedance fluctuations. The reproducibility of the nucleation process at the MCEs is shown in terms of a constant bubble frequency. A qualitative model is proposed to explain the shape of the measured waveforms. The possible use of the MCE device as a surface tension sensor with a frequency output is recognized.
| Original language | English |
|---|---|
| Pages (from-to) | 223-240 |
| Journal | Sensors and materials |
| Volume | 9 |
| Issue number | 4 |
| Publication status | Published - 1997 |