NMR study on the Li+ ion diffusion in LiCuO2 with layered structure

Nakamura K; Moriga T; Sumi A; Kashu Y; Michihiro Y; Nakabayashi I; Kanashiro T

Solid State Ionics, Vol.176, No.7-8, 837-840, 2005

DOI10.1016/j.ssi.2004.11.004 Export Citation

NMR study on the Li+ ion diffusion in LiCuO2 with layered structure

Nakamura K, Moriga T, Sumi A, Kashu Y, Michihiro Y, Nakabayashi I, Kanashiro T

The temperature dependence of the Li-7-NMR line width of LiCuO2 was measured. The line widths were constant at low temperature, while a narrowing in the line widths was observed above 370 K. The results are explained by a model of thermally activated diffusion of Li+ ions. The activation energy for the Li+ ionic diffusion was estimated to be 0.23 eV in LiCuO2, being lower than that in LiCoO2. It indicates that the fast ionic diffusion occurs in LiCuO2. (C) 2004 Elsevier B.V. All rights reserved.

Keywords:LiCuO2;Li-NMR spectrum;lithium ion diffusion