Electrochemical characteristics of LiCoO2 and LiMn2O4 prepared in supercritical water

Kiyoshi Kanamura, Takao Umegaki, Katsunori Toyoshima, Ken Ichi Okada, Yukiya Hakuta, Tadafumi Adschiri, Kunio Arai

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8 Citations (Scopus)

Abstract

LiCoO2 and LiMn2O4 particles were prepared in supercritical water under optimized preparation conditions using a flow type cell. The preparation of these oxides was finished within 30 sec. LiCoO2 and LiMn2O4 particles prepared in this study have less than 1.0 μm diameter. These particles exhibited a hexagonal shape. Electron diffraction patterns for LiCoO2 and LiMn2O4 hexagonal particles did not show any rings, indicating that the both particles prepared in this study has a nature of single crystal. The discharge and charge characteristics of the LiCoO2 were good for battery applications. However, the discharge capacity of LiMn2O4 was small due to a presence of large amount impurity phases. On the other hand, the reversibility of discharge and charge processes is extremely high, compared with an ordinary LiMn2O4.

Original languageEnglish
Pages (from-to)147-150
Number of pages4
JournalKey Engineering Materials
Issue number181-182
Publication statusPublished - 2000 Jan 1

Keywords

  • LiCoO
  • LiMnO
  • Rechargeable Lithium Battery
  • Supercritical Water

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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    Kanamura, K., Umegaki, T., Toyoshima, K., Okada, K. I., Hakuta, Y., Adschiri, T., & Arai, K. (2000). Electrochemical characteristics of LiCoO2 and LiMn2O4 prepared in supercritical water. Key Engineering Materials, (181-182), 147-150.