Visualization of electrode-electrolyte interfaces in LiPF 6/EC/DEC electrolyte for lithium ion batteries via in situ TEM

Zhiyuan Zeng, Wen I. Liang, Hong Gang Liao, Huolin L. Xin, Ying-hao Chu, Haimei Zheng*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

175 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)1745-1750
Number of pages6
JournalNano Letters
Volume14
Issue number4
DOIs
StatePublished - 9 Apr 2014

Keywords

  • Liquid cell TEM
  • electrochemical liquid cell
  • lithium dendrite
  • lithium ion batteries
  • solid-electrolyte interface

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