Editors' Choice—The Enhancement of Ion Transport in an Electrochemical Cell Using High Frequency Vibration for the Electropolishing of Copper
Abstract
A previous experiment showed that the rate of the electropolishing of a copper anode may be increased by twofold when generating a 60 KHz to 1.7 MHz frequency vibration in the anode. In this work we use theory to elucidate the mechanisms by which the vibration may enhance the transport of ions in the electrolyte solution and support the formation of dents in the anode, which was observed in experiment. We find that in the limit of weak ion convection the transport of ions mainly supports the formation of dents in the anode. However, in the limit of prominent ion convection we find an appreciable contribution of the vibration to the efficiency of the electropolishing process, in accordance with the previous experimental findings. The contribution of the vibration to ion transport is given by 2√PeDkC s /π√π, in which the Pecl ́et number, Pe, quantifies the ratio between the convective and diffusive fluxes of ions, and D, k, and C s are the diffusion coefficient of the ions, the wavenumber of the vibration, and the solubility limit of the ions in the electrolyte.
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| Titel | Editors' Choice—The Enhancement of Ion Transport in an Electrochemical Cell Using High Frequency Vibration for the Electropolishing of Copper |
|---|---|
| Medien | Journal of The Electrochemical Society |
| Verlag | --- |
| Heft | 5 |
| Band | 2018 165 |
| ISBN | 0013-4651 |
| Verfasser/Herausgeber | O. Dubrovski, Dr. Sabrina Tietze, A. Zigelman, Prof. Dr. Klaus Stefan Drese, Prof. Dr. Gerhard Lindner, O. Manor |
| Seiten | E236-E244 |
| Veröffentlichungsdatum | 2018-01-01 |
| Projekttitel | --- |
| Zitation | Dubrovski, O.; Tietze, Sabrina; Zigelman, A.; Drese, Klaus Stefan; Lindner, Gerhard; Manor, O. (2018): Editors' Choice—The Enhancement of Ion Transport in an Electrochemical Cell Using High Frequency Vibration for the Electropolishing of Copper. Journal of The Electrochemical Society 2018 165 (5), S. E236-E244. DOI: 10.1149/2.0811805jes |