Improved electrode performance of LiAlyCo1-yO2 prepared via sol-gel process

Won Sub Yoon, Kyung Keun Lee, Kwang Bum Kim

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A significant improvement in capacity and cyclability of Al-doped LiCoO2 cathode has been achieved by sol-gel process using acrylic acid as a chelating agent. The structure and electrochemical properties of the Al-doped LiCoO2 powders at various calcination temperatures were investigated. The X-ray diffraction pattern for the Al-doped LiCoO2 powders calcined at 600°C or above shows that these materials are a well-developed, layered HT-LiCoO2 structures. The capacity fading of the Al-doped LiCoO2 electrodes greatly reduced as the calcination temperature decreased. The sol-gel process makes possible the synthesis of Al-doped LiCoO2 with α-NaFeO2 structure at lower temperatures than solid-state synthesis, and thereby the enhancement of the capacity and cyclability of Al-doped LiCoO2 electrode.

Original languageEnglish
JournalElectrochemical and Solid-State Letters
Volume4
Issue number4
DOIs
Publication statusPublished - 2001 Apr 1

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

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