Co-precipitation synthesis of spherical Li1.05M0.05Mn1.9O4 (M = Ni, Mg, Al) spinel and its application for lithium secondary battery cathode

被引：48

作者：

Lee, Ki-Soo

Myung, Seung-Taek

Bang, Hyun Joo

Chung, Sukjin

Sun, Yang-Kook ^{[1
]}

机构：

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

[2] Iwate Univ, Grad Sch Engn, Dept Frontier Mat & Funct Engn, Morioka, Iwate 0208551, Japan

[3] Seoul Natl Univ Technol, New Energy Engn Dept, Seoul 139743, South Korea

来源：

ELECTROCHIMICA ACTA | 2007年 / 52卷 / 16期

关键词：

co-precipitation; spinel; cathode; lithium; battery;

D O I：

10.1016/j.electacta.2007.02.029

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Metal-doped spinet lithium manganese oxides were successfully synthesized via co-precipitation. The synthesized Li1.05M0.05Mn1.90, (M=Ni, Mg, Al) had highly crystalline cubic spinel phase with the space group Fd3m, as confirmed by X-ray diffraction study. From scanning electron microscopic observation, it was found that the prepared materials had spherical morphology with high tap-density. The Li1.05M0.05Mn1.9O4 (M =Ni, Mg, Al) electrode exhibited improved cycling performance at elevated temperature. Especially, the Li1.05Al0.05Mn1.9O4 showed capacity retention of 91.5% during 100 cycles at elevated temperature (55 degrees C). Also the thermal stability of the Li1.05M0.05Mn1.9O4 (M=Ni, Mg, Al) was also significantly improved. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：5201 / 5206

页数：6

共 26 条

[1] Preparation and electrochemical investigation of LiMn2-xMexO4 (Me:Ni, Fe, and x=0.5, 1) cathode materials for secondary lithium batteries [J].