Fabrication of LiCoO2 films for lithium rechargeable microbattery in an aqueous solution by electrochemical reflux method

Jin Ho Lee, Kyoo Seung Han, Bum Jae Lee, Seong Il Seo, Masahiro Yoshimura

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

LiCoO2 films were directly deposited on electron-conducting substrates using electrochemical reflux method in an aqueous solution under ambient atmosphere at a fixed temperature between 100 and 200°C with a fixed current density between 0.1 and 1.0 mA cm-2. The structural and compositional purities of the deposited LiCoO2 film were confirmed by elemental analyses, X-ray diffraction pattern analyses, and Raman spectroscopy. According to the Raman spectroscopy and the voltage versus capacity profiles for the deposited LiCoO2 film, it appears that the deposited film consists of layered LiCoO2 phase (space group R̄3m). Although the deposited LiCoO2 film was fabricated in a very economical and simple way, it exhibits an initial discharge capacity of 54.1 μAh/cm 2 μm and the discharge capacity retention of 85.6% over 15 cycles.

Original languageEnglish
Pages (from-to)467-471
Number of pages5
JournalElectrochimica Acta
Volume50
Issue number2-3 SPEC. ISS.
DOIs
Publication statusPublished - 2004 Nov 30

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry

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