Effect of LiOH concentration change on simultaneous preparation of LiCoO2 film and powder by hydrothermal method

Seung Wan Song, Kyoo Seung Han, Itsuro Sasagawa, Tomoaki Watanabe, Masahiro Yoshimura

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

LiCoO2 film and powder applicable to rechargeable lithium microbatteries have been directly prepared at the same time by hydrothermal treatment of a cobalt metal plate in a concentrated LiOH solution. The effect of LiOH concentration (0.1-6 M) on the structural change in film and powder has been examined using the XRD, micro-Raman and SEM analyses. It is found that all the powders with a layered hexagonal structure are precipitated by homogeneous nucleation regardless of LiOH concentration, whereas the dependence of film structure on the concentration is revealed by a selection of phase such as cobalt hydroxide species, hexagonal or cubic spinel phases formed by heterogeneous nucleation.

Original languageEnglish
Pages (from-to)277-281
Number of pages5
JournalSolid State Ionics
Volume135
Issue number1-4
DOIs
Publication statusPublished - 2000 Nov 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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