Physical and electrochemical properties of spherical Li1+x(Ni1/3Co1/3Mn1/3)1-xO2 cathode materials

S. H. Park, S. H. Kang, I. Belharouak, Y. K. Sun, K. Amine

Research output: Contribution to journalArticle

112 Citations (Scopus)

Abstract

A (Ni1/3Co1/3Mn1/3)CO3 precursor with an uniform, spherical morphology was prepared by coprecipitation using a continuously stirred tank reactor method. The as-prepared spherical (Ni1/3Co1/3Mn1/3)CO3 precursor served to produce dense, spherical Li1+x(Ni1/3Co1/3Mn1/3)1-xO2 (0 ≤ x ≤ 0.15) cathode materials. These Li-rich cathodes were also prepared by a second synthesis route that involved the use of an M3O4 (M = Ni1/3Co1/3Mn1/3) spinel compound, itself obtained from the carbonate (Ni1/3Co1/3Mn1/3)CO3 precursor. In both cases, the final Li1+x(Ni1/3Co1/3Mn1/3)1-xO2 products were highly uniform, having a narrow particle size distribution (10-μm average particle size) as a result of the homogeneity and spherical morphology of the starting mixed-metal carbonate precursor. The rate capability of the Li1+x(Ni1/3Co1/3Mn1/3)1-xO2 electrode materials, which was significantly improved with increased lithium content, was found to be better in the case of the denser materials made from the spinel precursor compound. This result suggests that spherical morphology, high density, and increased lithium content were key factors in enabling the high rate capabilities, and hence the power performances, of the Li-rich Li1+x(Ni1/3Co1/3Mn1/3)1-xO2 cathodes.

Original languageEnglish
Pages (from-to)177-183
Number of pages7
JournalJournal of Power Sources
Volume177
Issue number1
DOIs
Publication statusPublished - 15 Feb 2008
Externally publishedYes

Fingerprint

Electrochemical properties
Cathodes
Physical properties
physical properties
cathodes
Carbonates
Lithium
spinel
carbonates
lithium
electrode materials
Coprecipitation
particle size distribution
Particle size analysis
homogeneity
Metals
Particle size
reactors
routes
Electrodes

Keywords

  • Carbonate precipitation
  • Layered materials
  • Li(NiCoMn)O
  • Lithium secondary batteries
  • Positive materials

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry
  • Energy (miscellaneous)

Cite this

Physical and electrochemical properties of spherical Li1+x(Ni1/3Co1/3Mn1/3)1-xO2 cathode materials. / Park, S. H.; Kang, S. H.; Belharouak, I.; Sun, Y. K.; Amine, K.

In: Journal of Power Sources, Vol. 177, No. 1, 15.02.2008, p. 177-183.

Research output: Contribution to journalArticle

Park, S. H. ; Kang, S. H. ; Belharouak, I. ; Sun, Y. K. ; Amine, K. / Physical and electrochemical properties of spherical Li1+x(Ni1/3Co1/3Mn1/3)1-xO2 cathode materials. In: Journal of Power Sources. 2008 ; Vol. 177, No. 1. pp. 177-183.
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