Cycling characteristics of lithium powder polymer batteries assembled with composite gel polymer electrolytes and lithium powder anode

Yoon Sung Lee, Jae Ha Lee, Ji Ae Choi, Woo Young Yoon, Dong Won Kim

Research output: Contribution to journalArticle

110 Citations (Scopus)

Abstract

Novel composite gel polymer electrolytes exhibiting high ionic conductivity and good mechanical stability are prepared, and their electrochemical properties are characterized. As lithium ion sources of a single ion conductor, the core-shell structured SiO2(Li+) nanoparticles with uniform spherical shape are synthesized and used as functional fillers in the composite gel polymer electrolytes. By using the composite gel polymer electrolytes, the lithium powder polymer batteries composed of a lithium powder anode and a layered lithium vanadate (LiV3O8) cathode are assembled and their cycling performance is evaluated. The resulting lithium powder polymer batteries deliver a high discharge capacity of 264 mAh g -1 at room temperature and exhibit good capacity retention even at high current rates. The morphological analysis of the lithium powder anode reveals that the dendrite growth during cycling can be effectively suppressed by using the composite gel polymer electrolytes. Composite gel polymer electrolytes exhibiting high ionic conductivity and good mechanical stability are prepared and characterized. Core-shell structured SiO2(Li +) nanoparticles of uniform spherical shape are used as functional fillers in the composite gel polymer electrolytes. Lithium powder polymer batteries composed of a lithium powder anode and a LiV3O8 cathode deliver a high discharge capacity and exhibit good capacity retention.

Original languageEnglish
Pages (from-to)1019-1027
Number of pages9
JournalAdvanced Functional Materials
Volume23
Issue number8
DOIs
Publication statusPublished - 2013 Feb 25

Keywords

  • composite polymer electrolyte
  • core-shell structured silica
  • dendrite formation
  • lithium battery
  • lithium powder anode

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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