期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 150, 期 11, 页码 A1498-A1502出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.1614798
关键词
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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.
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