Accessing lithium−oxygen battery discharge products in their native environments via transmission electron microscopy grid electrode

Shibabrata Basak, Siemen Baaij, Swapna Ganapathy, Chandramohan George, Hermann Tempel, Hans Kungl, Erik M. Kelder, Henny W. Zandbergen, Marnix Wagemaker, Rüdiger A. Eichel

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

High-fidelity and facile ex situ transmission electron microscopy (TEM) characterization of lithium−oxygen (Li−O2) batteries is still limited by challenges in preserving the native environment of Li−O2 discharge products. The extreme reactivity and moisture sensitivity of the discharge products means that they are quickly altered during sample retrieval from cycled batteries and transfer for TEM analysis, resulting in loss of original information. We here demonstrate that by using a TEM specimen grid directly in Li−O2 batteries as both support electrode and sample collector overlaid on a standard oxygen diffusion electrode, discharge products that are formed on the grid can be kept pristine.

Original languageEnglish
Pages (from-to)9509-9515
JournalACS Applied Energy Materials
Volume3
Issue number10
DOIs
Publication statusPublished - 2020

Keywords

  • Batteries
  • Carbon specimen grid
  • Electrodes
  • Electron microscopy
  • Li−O chemistries

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