Electrochemical behavior of Li-powder anode in high Li capacity used

Shin Kook Kong, Bok Ki Kim, Wooyoung Yoon

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The prevention of Li dendrite growth in Li-metal secondary cells is investigated using high-Li-content electrodes. Li powder is formed using droplet emulsions, and the powder is then used to fabricate porous Li-powder electrodes that are tested against Li-foil electrodes. Scanning electron microscopy results show that dendrites form in a Li-foil cell when the cell is charged and discharged to 25% of the theoretical Li capacity (965 mAhg-1) at 1/3 C-rate (5mAcm-2). This dendrite formation causes cell failure after 10 cycles. No dendrites are observed in the Li-powder cell tested for 250 cycles. Li-powder anodes can be used directly in high-capacity cells such as Li-air or Li-S cells.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume159
Issue number9
DOIs
Publication statusPublished - 2012 Dec 1

Fingerprint

Powders
Anodes
anodes
dendrites
cells
Dendrites (metallography)
Metal foil
Electrodes
electrodes
foils
Emulsions
cycles
Metals
emulsions
Scanning electron microscopy
Air
scanning electron microscopy
causes
air
metals

ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

Cite this

Electrochemical behavior of Li-powder anode in high Li capacity used. / Kong, Shin Kook; Kim, Bok Ki; Yoon, Wooyoung.

In: Journal of the Electrochemical Society, Vol. 159, No. 9, 01.12.2012.

Research output: Contribution to journalArticle

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