A single-source Co/Li/O organometallic precursor for nanocrystalline LiCoO2 - Synthesis, formation pathway, and electrochemical performance

Jayaprakash Khanderi, Jörg J. Schneider

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

A single-source precursor route to phase-pure LiCoO2 by employing the organometallic precursor [(COD)2CoLi(thf)2] (1) to introduce a Co/Li/O 1:1:2 stoichiometry is described for the first time. Compound 1 undergoes decomposition in the presence of oxygen, forming nanoscaled, electrochemically active LiCoO2 starting at a temperature as low as 200 °C. Its temperature-dependent formation pathway was studied by various spectroscopic and microscopic techniques. The transition temperature for the evolution of layered LiCoO2 is above 400 °C. Electrochemical studies indicate that the low-temperature modification of LiCoO2 can be obtained at 500 °C, showing moderate electrochemical battery performance. The single-source organometallic precursor, [bis(η-1,5-cyclooctadiene)cobaltlithium], containing Li, Co, and O in the exact 1:1:2 atomic ratio, allows synthesis ofelectrochemically active nanocrystalline LiCoO2 at moderate temperatures.

Original languageEnglish (US)
Pages (from-to)4591-4594
Number of pages4
JournalEuropean Journal of Inorganic Chemistry
Issue number29
DOIs
StatePublished - Oct 1 2010

Keywords

  • Cobalt
  • Electrochemistry
  • Lithium
  • Nanoparticles
  • Single-source precursors

ASJC Scopus subject areas

  • Inorganic Chemistry

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