Surface control of lithium powder by use of a DET

Byeong Min Song, Han Eoi Park, Woo Young Yoon, Bok Ki Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A new technique for Li powder coating is developed. Surface control of the lithium powders is found to be beneficial in improving their safety and electrochemical properties for use as an anode material in a Li rechargeable battery. LiF, Li 2 CO 3 and wax films can be coated on the Li powder by using a droplet emulsion technique (DET), where fluoride, CO 2 and wax, respectively, are used as surfactants during emulsification. The surface films thus formed can be identified by means of X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray spectroscopy (EDS), focused ion-beam scanning transmission electron microscopy (FIB-STEM) and field-emission scanning electron microscopy (FE-SEM). The electrochemical and the reactive properties of the wax-coated Li powders are observed by using an impedance analysis and photography. The wax coating is found to significantly retard the reactivity of Li powders and, thus, to enhance the stability of the Li powders.

Original languageEnglish
Pages (from-to)1136-1140
Number of pages5
JournalJournal of the Korean Physical Society
Volume54
Issue number3
DOIs
Publication statusPublished - 2009 Mar

Keywords

  • DET method
  • Surface control
  • Wax powder

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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