Synthesis and structural characterization of layered Li[Ni 1/3Co1/3Mn1/3]O2 cathode materials by ultrasonic spray pyrolysis method

S. H. Park, C. S. Yoon, S. G. Kang, H. S. Kim, S. I. Moon, Y. K. Sun

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Abstract

The layered Li[Ni1/3Co1/3Mn1/3]O 2 materials were synthesized by a spray pyrolysis method using citric acid as a polymeric agent. The Li[Ni1/3Co1/3Mn 1/3]O2 powders were characterized by means of X-ray diffraction (XRD), charge/discharge cycling, cyclic voltammetry, and high-resolution transmission electron microscopy (TEM). The discharge capacity increases linearly with the increase of the upper cut-off voltage limit. TEM analysis showed that particles in the as-prepared powder possessed a polycrystalline structure. During cycling, the particle structure is mostly preserved although some surface grains on the polycrystalline particle became separated and transformed to the spinel phase.

Original languageEnglish
Pages (from-to)557-563
Number of pages7
JournalElectrochimica Acta
Volume49
Issue number4
DOIs
StatePublished - 2004 Feb 15

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Keywords

  • Cathode materials
  • HRTEM
  • Layered structure
  • Lithium-ion battery
  • Spray pyrolysis

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