Electrochemical properties of nano-sized LiNi 1/3Co 1/3Mn 1/3O 2 powders in the range from 56 to 101 nm prepared by flame spray pyrolysis

Jung Hyun Kim, Jang Heui Yi, You Na Ko, Yun Chan Kang

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Nano-sized LiNi 1/3Co 1/3Mn 1/3O 2 powders in the range from 56 to 101 nm with hexagonal α-NaFeO 2 structures are prepared directly by flame spray pyrolysis. Post-treatment of the powders at 700°C increases their crystallinity and mean particle sizes. The intensity ratios of the powders' (0 0 3) and (1 0 4) peaks in the XRD patterns prepared from spray solutions with lithium excesses of 10, 15 and 20% of the stoichiometric amount are 0.83, 1.25 and 1.25, respectively. The powder prepared with 15% excess lithium results in the highest initial discharge capacity of 174 mAh g -1 when post-treated at 700°C. The discharge capacity of the powder post-treated at 800°C decreases from 168 to 120 mAh g -1 after 30 cycles.

Original languageEnglish
Pages (from-to)254-259
Number of pages6
JournalMaterials Chemistry and Physics
Volume134
Issue number1
DOIs
Publication statusPublished - 2012 May 15
Externally publishedYes

Keywords

  • Chemical synthesis
  • Composite materials
  • Electrochemical properties
  • Nanostructures

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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