Synthesis and characterization of a new spinel, Li1.02Al0.25Mn1.75O3.97S0.03, operating at potentials between 4.3 and 2.4 V

被引：89

作者：

Park, SH ^{[1
]}

Park, KS

Sun, YK

Nahm, KS

机构：

[1] Chonbuk Natl Univ, Coll Engn, Sch Chem Engn & Technol, Chonju 561756, South Korea

[2] Hanyang Univ, Coll Engn, Dept Ind Chem, Seoul 133791, South Korea

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2000年 / 147卷 / 06期

关键词：

D O I：

10.1149/1.1393494

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A new spinel material, oxysulfide Li1.02Al0.25Mn1.75O3.97S0.03 has been synthesized using a sol-gel method. The cathode fabricated using the material shows the capacities of 89.5, 125, and 196 mAh/g in the 4 V (4.3 to 3.0 V), 3 V (2.4 to 3.5 V), and both the 3 and 4 V regions (4.3 to 2.4 V), respectively. This material exhibits no capacity loss after 30 cycles in both the 3 and 4 V regions during cycling. It was found that S doping was very effective in suppressing the formation of the tetragonal phase of LiMn2O4 in potential ranges of 2.4 to 4.3 V. (C) 2000 The Electrochemical Society. S0013-4651(99)10-002-8. All rights reserved.

引用

页码：2116 / 2121

页数：6

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