Suppression of dendrite formation via ultrasonic stimulation
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Published version
Author(s)
Type
Journal Article
Abstract
This research introduces a chemistry-agnostic approach to achieve rapid and degradation-free battery charging via ultrasonic agitation. An ultrasonic device operating in the megahertz range was used to stimulate electrolyte flow from outside the cell. The acoustic streaming effect accelerates ion transport from the bulk electrolyte to the electrode surface and suppresses the formation of an ion depletion zone. An experimental setup was used to optically observe the formation of dendrites when the current imposed across two zinc electrodes exceeded the limiting current. Beyond this limit, diffusion alone cannot provide sufficient ions, resulting in an ion depletion zone. It was subsequently shown that dendrite formation was reduced by over 98% when 15x the limiting current was forced across the electrodes and acoustic stimulation was delivered. Furthermore, it was shown that compared to the scenario without ultrasonic stimulation, the steady state potential was also reduced by 29%, indicating much better ion exchange between the electrodes. These findings suggest that ultrasonic stimulation can be a tool for enhancing electrochemical processes such as battery charging and discharging.
Date Issued
2024-05
Date Acceptance
2024-03-07
Citation
Electrochemistry Communications, 2024, 162
ISSN
1388-2481
Publisher
Elsevier
Journal / Book Title
Electrochemistry Communications
Volume
162
Copyright Statement
© 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
https://www.sciencedirect.com/science/article/pii/S1388248124000432?via%3Dihub
Subjects
Acoustic streaming
Battery
Dendrite suppression
Electrochemistry
Physical Sciences
Science & Technology
Ultrasonic stimulation
Publication Status
Published
Article Number
107700
Date Publish Online
2024-03-11