Hydrothermal synthesis of layered Li[Ni1/3Co 1/3Mn1/3]O2 as positive electrode material for lithium secondary battery

Seung Taek Myung, Myung Hun Lee, Shinichi Komaba, Naoaki Kumagai, Yang Kook Sun

Research output: Contribution to journalArticle

92 Scopus citations

Abstract

In attempts to prepare layered Li[Ni1/3Co1/3Mn 1/3]O2, hydrothermal method was employed. The hydrothermal precursor, [Ni1/3Co1/3Mn1/3](OH)2, was synthesized via a coprecipitation route. The sphere-shaped powder precursor was hydrothermally reacted with LiOH aqueous solution at 170 °C for 4 days in autoclave. From X-ray diffraction and scanning electron microscopic studies, it was found that the as-hydrothermally prepared powders were crystallized to layered α-NaFeO2 structure and the particles had spherical shape. The as-prepared Li[Ni1/3Co1/3Mn1/3] O2 delivered an initial discharge of about 110 mA h g-1 due to lower crystallinity. Heat treatment of the hydrothermal product at 800 °C was significantly effective to improve the structural integrity, which consequently affected the increase in the discharge capacity to 157 (4.3 V cut-off) and 182 mA h g-1 (4.6 V cut-off) at 25 °C with good reversibility.

Original languageEnglish
Pages (from-to)4800-4806
Number of pages7
JournalElectrochimica Acta
Volume50
Issue number24
DOIs
StatePublished - 2005 Aug 30

    Fingerprint

Keywords

  • Battery
  • Cathode
  • Coprecipitation
  • Hydrothermal
  • Lithium

Cite this