Electrochemical and magnetic characterization of LiFePO4 and Li0.95Mg0.05FePO4 cathode materials

被引：41

作者：

Yao, J.

Konstantinov, K.

Wang, G. X. ^{[1
]}

Liu, H. K.

机构：

[1] Univ Wollongong, Inst Superconductiong & Electr Mat, Wollongong, NSW 2522, Australia

[2] Univ Wollongong, ARC, Ctr Nanoelectromat, Wollongong, NSW 2522, Australia

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2007年 / 11卷 / 02期

关键词：

Lithium iron phosphates; magnetic susceptibility; Lithium-ion battery; electrochemical property;

D O I：

10.1007/s10008-005-0083-x

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A series of lithium iron phosphates was synthesized via the sol-gel route. Iron phosphides, which are electronic conductors, were formed when sintered at 850 degrees C. Magnetic susceptibility measurements on the samples show antiferromagnetic behaviour with T-N=50 +/- 2 K for LiFePO4 and Li0.95Mg0.05PO4 sintered at temperatures below 850 degrees C. The LiFePO4 and Li0.95Mg0.05FePO4 cathodes show a stable electrochemical capacity in the range of 150-160 mA h/g on cycling. The cyclability deteriorates with increasing sample sintering temperature due to the increased crystal size and impurities.

引用

页码：177 / 185

页数：9

共 16 条

[1] Olivine LiCoPO4 as 4.8 V electrode material for lithium batteries [J].