A novel layered Li[Li0.12NizMg0.32-zMn0.56]O2 cathode material for lithium-ion batteries

被引：26

作者：

Lee, CW

Sun, YK

Prakash, J

机构：

[1] IIT, Ctr Electrochem Sci & Engn, Dept Environm Chem & Engn, Chicago, IL 60616 USA

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

[3] Korea Electrotechnol Res Inst, Adv Mat & Applicat Lab, Battery Res Grp, Chang Won 641120, South Korea

来源：

ELECTROCHIMICA ACTA | 2004年 / 49卷 / 25期

关键词：

lithium-ion cathode; layered oxide; thermal properties; differential scanning calorimeter; electrochemical performance;

D O I：

10.1016/j.electacta.2004.04.033

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Layered Li[Li0.12NizMg0.32-zMn0.56]O-2 oxide cathodes containing lithium atoms in the transition metal layers were synthesized and characterized using X-ray diffraction (XRD), galvanostatic cycling, and differential scanning calorimetry (DSC). The Li[Li0.12NizMg0.32-zMn0.56]O-2 cathodes deliver a specific discharge capacity of about 190 mAh/g at room temperature and 236 mAh/g at 55 degreesC when cycled between 2.7 and 4.6 V versus Li/Li+. Excellent capacity retention and smooth potential profiles at room and elevated temperatures over extended cycles suggest that this material does not convert into a spinel structure. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：4425 / 4432

页数：8

共 21 条

[1] Structural transformation on cycling layered Li(Mn1-yCoy)O2 cathode materials [J].