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Micromachining Using Electrochemical Discharge Phenomenon, 2nd Edition by Jana D. Abou Ziki, Rolf Wuthrich

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Chapter 3

Gas-Evolving Electrodes

Abstract

To understand the occurrence of electrochemical discharges, it is necessary to have in-depth knowledge of the phenomena taking place at gas-evolving electrodes. The gas is produced electrochemically according to Faraday's law. However, the growth of gas bubbles on the electrode surface affects the area available for electrochemical reactions. The description of the electrochemically active surface as a function of the bubble activity on a gas-evolving electrode is the main topic of this chapter. This understanding will allow us to derive an evolution equation for the bubble coverage fraction of the electrode during electrolysis. This equation will have important applications in the description of electrochemical ...

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