Lithium metal stripping mechanisms revealed through electrochemical liquid cell electron microscopy
- Authors
- Lee, Seung-Yong; Shangguan, Junyi; Betzler, Sophia; Harris, Stephen J.; Doeff, Marca M.; Zheng, Haimei
- Issue Date
- Nov-2022
- Publisher
- Elsevier Ltd
- Keywords
- Electrochemical liquid cell transmission; electron microscopy; Lithium -ion battery; Lithium metal anode; Lithium stripping; Solid -electrolyte interphase
- Citation
- Nano Energy, v.102, pp.1 - 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- Nano Energy
- Volume
- 102
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/191131
- DOI
- 10.1016/j.nanoen.2022.107641
- ISSN
- 2211-2855
- Abstract
- An understanding of lithium stripping is as important as that of lithium plating to achieve significant advances in using lithium metal anodes for high-energy rechargeable batteries. However, there have been limited studies on lithium stripping compared to lithium plating. Here we report the lithium stripping mechanisms revealed through in-situ electrochemical liquid cell transmission electron microscopy (TEM). We directly observe and compare the stripping behavior of the in-situ grown lithium dendrites and lithium nanograins covered by a lithium fluoride-rich solid-electrolyte interphase (SEI). We find the sporadic lithium stripping behavior and three important modes that can describe the stripping of individual lithium deposits, regardless of their morphology: (i) symmetric stripping, (ii) surface-preferred asymmetric stripping, and (iii) interface-preferred asymmetric stripping. In addition, SEI chemical mapping with high spatial resolution shows a remarkable SEI loss at the end of the lithium metal stripping, which illustrates the importance of SEI protection in the subsequent cycles.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 신소재공학부 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.