Operando Transmission Electron Microscopy Study of All-Solid-State Battery Interface: Redistribution of Lithium among Interconnected Particles

Shibabrata Basak, Vadim Migunov, Qing Lee, Swapna Ganapathy, Ashwin Vijay, Frans Ooms, Marnix Wagemaker, Erik M. Kelder, V.A. Arszelewska, More Authors

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
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Abstract

With operando transmission electron microscopy visualizing the solid-solid electrode-electrolyte interface of silicon active particles and lithium oxide solid electrolyte as a model system, we show that (de)lithiation (battery cycling) does not require all particles to be in direct contact with electrolytes across length scales of a few hundred nanometers. A facile lithium redistribution that occurs between interconnected active particles indicates that lithium does not necessarily become isolated in individual particles due to loss of a direct contact. Our results have implications for the design of all-solid-state battery electrodes with improved capacity retention and cyclability. ©

Original languageEnglish
Pages (from-to)5101-5106
Number of pages6
JournalACS Applied Energy Materials
Volume3
Issue number6
DOIs
Publication statusPublished - 2020

Keywords

  • (de)lithiation
  • all-solid-state batteries
  • electrode-electrolyte interface
  • electron microscopy
  • operando TEM

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