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Article overview
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Dynamics of the lithium metal electrodeposition: Effects of a gas bubble | Shoutong Jin
; Linming Zhou
; Yongjun Wu
; Shang Zhu
; Qilong Zhang
; Hui Yang
; Yuhui Huang
; Zijian Hong
; | Date: |
17 Jun 2022 | Abstract: | Rechargeable lithium metal batteries have been widely investigated recently,
driven by the global trend for the electrification of transportation.
Understanding the dynamics of lithium metal electrodeposition is crucial to
design safe and reliable lithium metal anodes. In this study, we developed a
grand potential-based phase-field model to investigate the effect of a static
gas bubble, which forms due to the complicated internal side reactions, on the
dynamics of the dendrite growth during electrodeposition. It is observed that
with the presence of a gas bubble, the dendrite growth is largely accelerated,
due to the accumulation of lithium ions on the far side of the bubble away from
the anode surface, which could serve as an ion "reservoir" for the dendrite
growth, leading to the bending/tilting of the lithium dendrites toward the
bubble. Meanwhile, the effects of the bubble size and distance to the anode are
further studied, demonstrating that the larger the bubble size and the closer
to the anode, the longer the lithium dendrites grow. We hope this study could
serve as an example to exploit the effect of extrinsic factors on the dendrite
growth dynamics. | Source: | arXiv, 2207.06491 | Services: | Forum | Review | PDF | Favorites |
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