Journal
NANO LETTERS
Volume 14, Issue 4, Pages 1745-1750Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl403922u
Keywords
Liquid cell TEM; electrochemical liquid cell; lithium ion batteries; lithium dendrite; solid-electrolyte interface
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Funding
- U.S. Department of Energy (DOE) [DE-AC02-05CH11231]
- National Science Council in Taiwan [NSC102-2911-I-009-502]
- DOE Office of Science Early Career Research Program
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We report direct visualization of electrochemical lithiation and delithiation of Au anodes in a commercial LiPF6/EC/DEC electrolyte for lithium ion batteries using transmission electron microscopy (TEM). The inhomogeneous lithiation, lithium metal dendritic growth, electrolyte decomposition, and solid-electrolyte interface (SEI) formation are observed in situ. These results shed lights on strategies of improving electrode design for reducing short-circuit failure and improving the performance of lithium ion batteries.
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