Electrochemical and structural study of Li2CuO2, LiCuO2 and NaCuO2

Hajime Arai, Shigeto Okada, Yoji Sakurai, Jun Ichi Yamaki

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53 Citations (Scopus)

Abstract

Electrochemical behavior and accompanying structural changes of Li2CuO2 and LiCuO2 were examined. Lithium cupric oxide Li2CuO2 was oxidized to LiCuO2 via two two-phase reactions. One-dimensional [CuO4] chains in Li2CuO2 were maintained during the lithium extraction and insertion processes. When the Li2-xCuO2 electrode was cycled at 0.5 mA cm-2, a rechargeable capacity of 130 mA h g-1 was obtained with an average voltage of 2.5 V. Lithium extraction from LiCuO2 lead to a production of CuO and oxygen. Lithium insertion into NaCuO2 resulted in a new phase formation of LiNaCuO2.

Original languageEnglish
Pages (from-to)45-53
Number of pages9
JournalSolid State Ionics
Volume106
Issue number1-2
Publication statusPublished - Feb 1 1998
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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    Arai, H., Okada, S., Sakurai, Y., & Yamaki, J. I. (1998). Electrochemical and structural study of Li2CuO2, LiCuO2 and NaCuO2. Solid State Ionics, 106(1-2), 45-53.