In situ X-ray study of LiMnO2

被引：46

作者：

Kotschau, IM ^{[1
]}

Dahn, JR ^{[1
]}

机构：

[1] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1998年 / 145卷 / 08期

关键词：

D O I：

10.1149/1.1838698

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical behavior of Li/LiPF6(1 M EC-DEC)/LiMnO2 cells has been investigated in previous studies. Here we report the results of extensive in situ X-ray studies which have been carried out in order to map out the evolution of the crystal structure upon subsequent charge and discharge of the cathode material. It has been confirmed that LiMnO2 converts irreversibly to a cubic structure LiMn2O4 after the initial charge (equal to delithiation) of the cathode. A second (tetragonal) phase is observed on subsequent discharge on the 3.0 V plateau. The evolution of the lattice parameters of the tetragonal phase as a function of cycle number is reported as the material undergoes this transition each cycle.

引用

页码：2672 / 2677

页数：6

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