Enhanced electrochemical performance of LiFePO4/C via Mo-doping at Fe site

被引：92

作者：

Gao, Haiyan ^{[1
,2
]}

Jiao, Lifang ^{[1
,2
]}

Peng, Wenxiu ^{[1
,2
]}

Liu, Guang ^{[1
,2
]}

Yang, Jiaqin ^{[1
,2
]}

Zhao, Qianqian ^{[1
,2
]}

Qi, Zhan ^{[1
,2
]}

Si, Yuchang ^{[1
,2
]}

Wang, Yijing ^{[1
,2
]}

Yuan, Huatang ^{[1
,2
]}

机构：

[1] Inst New Energy Mat Chem, Tianjin 300071, Peoples R China

[2] Nankai Univ, Key Lab Adv Energy Mat Chem MOE, MOE ITR 0927, Tianjin 300071, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2011年 / 56卷 / 27期

关键词：

Lithium-ion battery; Lithium iron phosphate; Cathode material; Mo doped; Sol-gel method; ESCA; TEMPERATURE; COMPOSITE;

D O I：

10.1016/j.electacta.2011.08.086

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 Mo-doped LiFe1-3xMoxPO4/C (x = 0.000, 0.025, 0.050, 0.100, 0.150) cathode materials are synthesized by sol-gel method. XRD, ICP and Rietveld refinement results reveal that Mo doped in the crystal lattice and probably occupied Fe site. The structure benefits the transportation of Li+ and the diffusion of Li+ in the doped materials are enhanced remarkably than that of the undoped one, which leads to excellent electrochemical performance. The doped sample with x = 0.025 exhibits the best electrochemical performance, with the initial discharge capacity of 162.3 mAh g(-1) at 0.1 C rate. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：9961 / 9967

页数：7

共 34 条

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