Morphological instability during steady electrodeposition at overlimiting currents

Christoffer Peder Nielsen, Henrik Bruus

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We present a linear stability analysis of a planar metal electrode during steady electrodeposition. We extend the previous work of Sundstrom and Bark by accounting for the extended space-charge density, which develops at the cathode once the applied voltage exceeds a few thermal voltages. In accordance with Chazalviel's conjecture, the extended space-charge region is found to greatly affect the morphological stability of the electrode. To supplement the numerical solution of the stability problem, we have derived analytical expressions valid in the limit of low and high voltage, respectively.
Original languageEnglish
Article number052310
JournalPhysical Review E
Issue number5
Number of pages10
Publication statusPublished - 2015

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©2015 American Physical Society

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