Electrochemical and structural study of Li2CuO2, LiCuO2 and NaCuO2

被引：63

作者：

Arai, H ^{[1
]}

Okada, S ^{[1
]}

Sakurai, Y ^{[1
]}

Yamaki, J ^{[1
]}

机构：

[1] NTT Corp, Integrated Informat & Energy Syst Res Labs, Tokai, Ibaraki 31911, Japan

来源：

SOLID STATE IONICS | 1998年 / 106卷 / 1-2期

关键词：

lithium battery; cathode material; lithium copper oxide; sodium copper oxide;

D O I：

10.1016/S0167-2738(97)00485-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 mAh 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.

引用

页码：45 / 53

页数：9