Magneto-Dendrite Effect: Copper Electrodeposition under High Magnetic Field

Makoto Miura, Yoshinobu Oshikiri, Atsushi Sugiyama, Ryoichi Morimoto, Iwao Mogi, Miki Miura, Satoshi Takagi, Yusuke Yamauchi, Ryoichi Aogaki

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Abstract

Ionic vacancy is a by-product in electrochemical reaction, composed of polarized free space of the order of 0.1 nm with a 1 s lifetime, and playing key roles in nano-electrochemical processes. However, its chemical nature has not yet been clarified. In copper electrodeposition under a high magnetic field of 15 T, using a new electrode system called cyclotron magnetohydrodynamic (MHD) electrode (CMHDE) composed of a pair of concentric cylindrical electrodes, we have found an extraordinary dendritic growth with a drastic positive potential shift from hydrogen-gas evolution potential. Dendritic deposition is characterized by the co-deposition of hydrogen molecule, but such a positive potential shift makes hydrogen-gas evolution impossible. However, in the high magnetic field, instead of flat deposit, remarkable dendritic growth emerged. By examining the chemical nature of ionic vacancy, it was concluded that ionic vacancy works on the dendrite formation with the extraordinary potential shift.

Original languageEnglish
Article number45511
JournalScientific reports
Volume7
DOIs
Publication statusPublished - 2017 Apr 4

ASJC Scopus subject areas

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    Miura, M., Oshikiri, Y., Sugiyama, A., Morimoto, R., Mogi, I., Miura, M., Takagi, S., Yamauchi, Y., & Aogaki, R. (2017). Magneto-Dendrite Effect: Copper Electrodeposition under High Magnetic Field. Scientific reports, 7, [45511]. https://doi.org/10.1038/srep45511