Lithium electroactivity of cobalt oxide nanoparticles synthesized using thermolysis process

Yun Ho Jin, Hyun Woo Shim, Dong Wan Kim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Nano-sized cobalt (II) oxide nanoparticles with a high crystallinity were synthesized using thermolysis of a Co2+-oleate precursor at 310°C. The phase and morphology of as-prepared cobalt oxide nanoparticles were characterized using X-ray diffraction, highresolution transmission electron microscopy, and Brunauer-Emmett-Teller surface area measurements. The cobalt oxide nanoparticles were found to be spherical nanoclusters with an average diameter of approximately 200 nm, consisting of tiny nanocrystals (10-20 nm). Furthermore, the Li electroactivites of the cobalt oxide nanoparticles were investigated using cyclic voltammetry and galvanostatic cycling. The cobalt oxide nanoparticles could deliver high capacities over 420 mA h g-1 at a C/5 current rate.

Original languageEnglish
Pages (from-to)636-640
Number of pages5
JournalJournal of the Korean Ceramic Society
Volume48
Issue number6
DOIs
Publication statusPublished - 2011 Nov
Externally publishedYes

Keywords

  • Capacity
  • Cobalt oxides
  • Electroactivity
  • Nanoparticles
  • Thermolysis

ASJC Scopus subject areas

  • Ceramics and Composites

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