Two-dimensional electrochemical turbulence during the electrodissolution of metal disk electrodes : Model calculations

We present numerical studies of the spatio-temporal dynamics of disk electrodes with local limit cycle oscillations. The simulations are done with a realistic 3-D geometry of the electrochemical cell and disk-shaped working electrodes (WE). Spatio-temporal chaos is shown to exist from a critical ele...

Full description

Saved in:
Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2006-08, Vol.8 (31), p.3659-3668
Main Authors: BIRZU, Adrian, KRISCHER, Katharina
Format: Article
Language:English
Subjects:
Algorithms
Chemistry
Electrochemistry
Electrodes
Exact sciences and technology
General and physical chemistry
Metals - chemistry
Models, Theoretical
Oscillometry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We present numerical studies of the spatio-temporal dynamics of disk electrodes with local limit cycle oscillations. The simulations are done with a realistic 3-D geometry of the electrochemical cell and disk-shaped working electrodes (WE). Spatio-temporal chaos is shown to exist from a critical electrode size onwards. It is analyzed by Karhunen-Loève decomposition and Hilbert transform. The former shows that the chaos becomes more complex with increasing system size, the latter allows features that generate the spatio-temporal complexity to be identified, namely, spatially extended 1-D phase defects and topological defects.
ISSN:1463-9076
1463-9084
DOI:10.1039/b606985a