Standing and propagating wave oscillations in the anodic dissolution of nickle

O. Lev; M. Sheintuch; L. M. Pisemen; Ch Yarnitzkyt

doi:10.1038/336458a0

Standing and propagating wave oscillations in the anodic dissolution of nickle

O. Lev^*, M. Sheintuch, L. M. Pisemen, Ch Yarnitzkyt

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

74 Scopus citations

Abstract

Spontaneous pattern formation in reactive media has been thoroughly investigated in homogeneous oscillatory systems, mainly in the Belousov-Zhabotinsky reaction¹. Spatiotemporal patterns have been observed in some studies of catalytic surfaces^2,3 and of travelling electrochemical waves⁴. Here we report on oscilla-tory wave patterns observed during electrochemical dissolution of a nickel wire in acidic media. We show that space-averaged poten-tial or current oscillations are associated with the creation of an inhomogeneous current distribution, and that the selection of a specific spatial current pattern depends on the current control mode of the electrochemical cell. In the almost potentiostatic (fixed potential) mode of operation, a train of travelling pulses prevails, whereas antiphase oscillations occur in the galvanostatic (constant average current) mode. The latter, as far as we know, have never before been reported in any reactive system.

Original language	English
Pages (from-to)	458-459
Number of pages	2
Journal	Nature
Volume	336
Issue number	6198
DOIs	https://doi.org/10.1038/336458a0
State	Published - 1988
Externally published	Yes

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title = "Standing and propagating wave oscillations in the anodic dissolution of nickle",

abstract = "Spontaneous pattern formation in reactive media has been thoroughly investigated in homogeneous oscillatory systems, mainly in the Belousov-Zhabotinsky reaction1. Spatiotemporal patterns have been observed in some studies of catalytic surfaces2,3 and of travelling electrochemical waves4. Here we report on oscilla-tory wave patterns observed during electrochemical dissolution of a nickel wire in acidic media. We show that space-averaged poten-tial or current oscillations are associated with the creation of an inhomogeneous current distribution, and that the selection of a specific spatial current pattern depends on the current control mode of the electrochemical cell. In the almost potentiostatic (fixed potential) mode of operation, a train of travelling pulses prevails, whereas antiphase oscillations occur in the galvanostatic (constant average current) mode. The latter, as far as we know, have never before been reported in any reactive system.",

author = "O. Lev and M. Sheintuch and Pisemen, {L. M.} and Ch Yarnitzkyt",

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T1 - Standing and propagating wave oscillations in the anodic dissolution of nickle

AU - Lev, O.

AU - Sheintuch, M.

AU - Pisemen, L. M.

AU - Yarnitzkyt, Ch

PY - 1988

Y1 - 1988

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AB - Spontaneous pattern formation in reactive media has been thoroughly investigated in homogeneous oscillatory systems, mainly in the Belousov-Zhabotinsky reaction1. Spatiotemporal patterns have been observed in some studies of catalytic surfaces2,3 and of travelling electrochemical waves4. Here we report on oscilla-tory wave patterns observed during electrochemical dissolution of a nickel wire in acidic media. We show that space-averaged poten-tial or current oscillations are associated with the creation of an inhomogeneous current distribution, and that the selection of a specific spatial current pattern depends on the current control mode of the electrochemical cell. In the almost potentiostatic (fixed potential) mode of operation, a train of travelling pulses prevails, whereas antiphase oscillations occur in the galvanostatic (constant average current) mode. The latter, as far as we know, have never before been reported in any reactive system.

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Standing and propagating wave oscillations in the anodic dissolution of nickle

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