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...

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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
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description 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.
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source Royal Society of Chemistry: Jisc Collections: Journals Archive 1841-2007 (2019-2023)
subjects Algorithms
Chemistry
Electrochemistry
Electrodes
Exact sciences and technology
General and physical chemistry
Metals - chemistry
Models, Theoretical
Oscillometry
title Two-dimensional electrochemical turbulence during the electrodissolution of metal disk electrodes : Model calculations
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