Spatial current distribution during nickel anodic dissolution in sulfuric acid

O. Lev, M. Sheintuch, H. Yarnitsky*, L. M. Pismen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

The spatial current distribution associated with the oscillatory behavior of a nickel wire in sulfuric acid solution has been investigated. The time-dependent local activity has been resolved using a microcomputer-controlled set of micro-reference electrodes situated close to an anodized nickel wire. Galvanostatic potential oscillations are accompanied by standing activity waves, while the almost potentiostatic oscillations are accompanied by travelling pulses. The long-range synchronization along the electrode exhibits chaotic behavior. Transitions between steady states show long-range current modulation instead of the expected moving fronts.

Original languageAmerican English
Pages (from-to)839-847
Number of pages9
JournalChemical Engineering Science
Volume45
Issue number4
DOIs
StatePublished - 1990
Externally publishedYes

Bibliographical note

Funding Information:
Acknowledgement-This work was supported by the U.S.-Israel Binational Science Foundation.

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