Growth mechanism of Ni0.3Mn0.7CO3 precursor for high capacity Li-ion battery cathodes

Dapeng Wang, Ilias Belharouak, Gary M. Koenig, Guangwen Zhou, Khalil Amine

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

Transition metal carbonate (Ni0.3Mn0.7CO3) was co-precipitated as the precursor for Li- and Mn-enriched composite materials used as advanced cathodes for lithium-ion batteries. The optimal pH range for synthesis of Ni0.3Mn0.7CO3 in a continuous stirred tank reactor (CSTR) at the pilot scale was predicted by taking into account the chemical equilibriums between the products and reactants. The nucleation and growth of precursor particles were investigated during the CSTR process by monitoring particle size distributions, particle morphologies, chemical compositions, and structures with time. It was found that in the early stage of co-precipitation both the particle size distribution and the chemical composition were not homogeneous; a lead time of about 5 hours under our experiment conditions was necessary to achieve the uniformity in particle shape and chemical composition. The latter was not altered during extended times of co-precipitation; however, a continuous growth of particles resulted in relatively large particles (D50 > 30 μm). The electrochemical performance of the final lithiated cathode materials is reported.

Original languageEnglish
Pages (from-to)9290-9295
Number of pages6
JournalJournal of Materials Chemistry
Volume21
Issue number25
DOIs
Publication statusPublished - 7 Jul 2011
Externally publishedYes

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Cathodes
Coprecipitation
Particle size analysis
Chemical analysis
Carbonates
Particles (particulate matter)
Transition metals
Nucleation
Lithium-ion batteries
Monitoring
Composite materials
Experiments

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemistry(all)

Cite this

Growth mechanism of Ni0.3Mn0.7CO3 precursor for high capacity Li-ion battery cathodes. / Wang, Dapeng; Belharouak, Ilias; Koenig, Gary M.; Zhou, Guangwen; Amine, Khalil.

In: Journal of Materials Chemistry, Vol. 21, No. 25, 07.07.2011, p. 9290-9295.

Research output: Contribution to journalArticle

Wang, Dapeng ; Belharouak, Ilias ; Koenig, Gary M. ; Zhou, Guangwen ; Amine, Khalil. / Growth mechanism of Ni0.3Mn0.7CO3 precursor for high capacity Li-ion battery cathodes. In: Journal of Materials Chemistry. 2011 ; Vol. 21, No. 25. pp. 9290-9295.
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