Effects of drying control chemical additive on properties of Li4Ti5O12 negative powders prepared by spray pyrolysis

Seo Hee Ju, Yun Chan Kang

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23 Citations (Scopus)

Abstract

High-density Li4Ti5O12 powders comprising spherical particles are prepared by spray pyrolysis from a solution containing dimethylacetamide (drying control chemical additive) and citric acid and ethylene glycol (organic additives). The prepared powders have high discharge capacities and good cycle properties. The optimum concentration of dimethylacetamide is 0.5 M. The addition of dimethylacetamide to the polymeric spray solutions containing citric acid and ethylene glycol helps in the effective control of the morphology of the Li4Ti5O12 powders. At a constant current density of 0.17 mA g-1, the initial discharge capacities of the powders obtained from the spray solution with and without the organic additives are 171 and 167 mAh g-1, respectively.

Original languageEnglish
Pages (from-to)4327-4331
Number of pages5
JournalJournal of Power Sources
Volume195
Issue number13
DOIs
Publication statusPublished - 2010 Jul 1
Externally publishedYes

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Keywords

  • Electrochemical properties
  • Gas-phase reaction
  • Lithium titanate
  • Lithium-ion battery
  • Spray pyrolysis

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Physical and Theoretical Chemistry

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