Morphological differences between lithium powder and lithium foil electrode during discharge/charge

Jin Suk Kim, Wooyoung Yoon, Bok Ki Kim

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The dissolution/deposition behaviors of a lithium powder electrode during discharge/charge were examined by scanning electron microscopy (SEM) observation, and compared with those of a lithium foil electrode. For the lithium foil electrode, the dissolution/deposition of lithium was localized in limited areas on the lithium surface, and then the resulting lithium dendritic growth was accelerated after repeated cycling. On the other hand, for the lithium powder electrode, the dissolution/deposition of lithium was distributed throughout the entire body of the lithium electrode, and the lithium dendritic growth was considerably suppressed. Also, the shape of electrodes was maintained as a mixture of the porous powder particles even after several cycles. The effects of current density on the morphological changes and dissolution/deposition behaviors were also observed.

Original languageEnglish
Pages (from-to)258-263
Number of pages6
JournalJournal of Power Sources
Volume163
Issue number1 SPEC. ISS.
DOIs
Publication statusPublished - 2006 Dec 7

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Keywords

  • Dendritic growth
  • Lithium dissolution/deposition behaviors
  • Lithium metal battery
  • Lithium powder

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Physical and Theoretical Chemistry

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