Microbubble Formation from Ionic Vacancies in Copper Electrodeposition under a High Magnetic Field

Ionic vacancies created in copper electrodeposition have been first observed by converting to microbubbles via. nanobubbles. Since the copper deposition potential was much more positive than hydrogen evolution one, the microbubbles were ascribed not to hydrogen bubbles but to the ionic vacancies. Then, the evolution times of the microbubbles at an overpotential of -300 mV were examined under various magnetic flux densities. (C) The Electrochemical Society of Japan, All rights reserved.