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Oscillations and concentration patterns in electrochemical systems

✍ Scribed by Jacob Jorne

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
449 KB
Volume
28
Category
Article
ISSN
0013-4686

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✦ Synopsis

Oscillations in certain electrochemical systems can be explained by the coupling between chemical reactions and transport processes in multicomponent systems. Dynamic patterns and rhythm can be developed due to the coupling between chemical reactions and surface ditTusion. A linear stability analysis is used in order to predict stationary and oscillatory instability zones in a thin layer at the electrode-solution interface. The resulting chemical waves can leave traces of geometric patterns on the electrode surface, and can induce mechanical stresses and convection. The geometnc patterns are expected to be observed in the form of hexagonal, square or triangular unit cells, arrays of pits, changes in colour, pulsations and simultaneous changes all over the electrode surface.

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