Significance of the tetrahedral a site on the electrochemical performance of substituted Li1.05M0.05Mn1.90O4 spinel electrodes (M = Li, Mg, Zn, Al) in lithium cells

被引：36

作者：

Kim, JS ^{[1
]}

Vaughey, JT ^{[1
]}

Johnson, CS ^{[1
]}

Thackeray, MM ^{[1
]}

机构：

[1] Argonne Natl Lab, Electrochem Technol Program, Div Chem Technol, Argonne, IL 60439 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2003年 / 150卷 / 11期

关键词：

D O I：

10.1149/1.1614798

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical performance of substituted Li1.05M0.05Mn1.90O4 spinel electrodes (M = Li, Mg, Zn, Al) in lithium cells has been studied as a function of the oxidation states of the M and Mn ions in the parent electrode, and the occupancy of the tetrahedral A sites by the Li and the M ions. At 5% substitution of manganese, neutron diffraction analyses show that the M ions reside at the A sites of the A[B-2]O-4 spinel structure. The electrochemical data showed that at 50 degreesC the rate of capacity fade can be correlated with the M-ion occupancy of the A sites. A possible explanation for this phenomenon is provided. (C) 2003 The Electrochemical Society.

引用

页码：A1498 / A1502

页数：5

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