Synthesis of LiCoO2 using acrylic acid and its electrochemical properties for Li secondary batteries

Won Sub Yoon, Kwang Bum Kim

Research output: Contribution to journalConference article

80 Citations (Scopus)

Abstract

LiCoO2 powders were synthesized by the sol-gel process at various temperatures using acrylic acid as a chelating agent and their structural and electrochemical properties were systematically investigated by X-ray diffraction (XRD), extended X-ray absorption fine structure (EXAFS), Electrochemical voltage spectroscopy (EVS), cyclic voltammetry (CV), and galvanostatic charge/discharge experiments. In this study, the gel-derived LiCoO2 samples calcined at 600°C or above were found to be a well-developed layered high temperature-LiCoO2 (HT-LiCoO2) . In the EVS of all the gel-derived HT-LiCoO2 samples, the peak potential separation of 10 mV was observed regardless of the calcination temperature, indicating that these samples have basically the same thermodynamic reversibility for intercalation/deintercalation of Li ions. The change of the main peak potentials and currents in cyclic voltammograms with increasing calcination temperature could be explained by the effect of particle size.

Original languageEnglish
Pages (from-to)517-523
Number of pages7
JournalJournal of Power Sources
Volume81-82
DOIs
Publication statusPublished - 1999 Sep
EventProceedings of the 1998 Ninth International Meeting on Lithium Batteries - Edingburgh, United Kingdom
Duration: 1998 Jul 121998 Jul 17

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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