Electrochemistry and structural chemistry of Li[CrTi]O4 (Fd(3)over-barm) in nonaqueous lithium cells

被引：74

作者：

Ohzuku, T ^{[1
]}

Tatsumi, K ^{[1
]}

Matoba, N ^{[1
]}

Sawai, K ^{[1
]}

机构：

[1] Osaka City Univ, Fac Engn, Dept Appl Chem, Electrochem & Inorgan Chem Lab, Osaka 5588585, Japan

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2000年 / 147卷 / 10期

关键词：

D O I：

10.1149/1.1393944

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Li[CrTi]O-4 (Fd (3) over bar m; n = 8.32 Angstrom) having a spinel-framework structure was prepared and examined in nonaqueous lithium cells. Li/Li[CrTi]O-4 cells showed the flat operating voltages of 1.50 V and rechargeable capacity of 150 mAh/g. The X-ray diffraction examinations in this region indicated that Li[CrTi]O-4 was reduced to Li-2[CrTi]O-4 in a topotactic manner. Electrochemical oxidation of Li[CrTi]O-4 was also examined. Redox potential of 4.7 V vs. Li was observed while reversibility was pool due to the destruction of crystallite. Differences and similarities between Li[CrTi]O-4 and Li[Li0.33Ti1.67]O-4 were discussed with respect to operating voltage, reversibility, and insertion scheme. (C) 2000 The Electrochemical Society. S0013-4651(00)02-069-3. All rights reserved.

引用

页码：3592 / 3597

页数：6

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