Morphological changes in and around Sn electrodes during Li ion cycling characterized by in situ environmental TEM

Kyong Wook Noh, Shen J. Dillon

Research output: Contribution to journalArticlepeer-review

Abstract

Sn electrodes are cycled against Li metal in situ in a transmission electron microscope in commercial liquid electrolyte. The strain associated with the dealloying reaction is accommodated by the formation of nanoscale porosity. Significant asymmetry in the charge vs. discharge rate results from the effects of solid-electrolyte interphase formation in the confined geometry during lithiation. This layer partially dissolves during delithiation. This cyclic formation and dissolution of solid-electrolyte interphase should contribute significantly to the capacity fade observed in Sn-based electrodes.

Original languageEnglish (US)
Pages (from-to)658-661
Number of pages4
JournalScripta Materialia
Volume69
Issue number9
DOIs
StatePublished - Nov 2013
Externally publishedYes

Keywords

  • Electron diffraction
  • Lithium ion batteries
  • Thin films
  • Transmission electron microscopy

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Morphological changes in and around Sn electrodes during Li ion cycling characterized by in situ environmental TEM'. Together they form a unique fingerprint.

Cite this