Synthesis of LiFePO4 material with improved cycling performance under harsh conditions

被引：75

作者：

Lee, S. B. ^{[1
]}

Cho, S. H. ^{[1
]}

Cho, S. J. ^{[1
]}

Park, G. J. ^{[2
]}

Park, S. H. ^{[3
]}

Lee, Y. S. ^{[1
]}

机构：

[1] Chonnam Natl Univ, Fac Appl Chem Engn, Kwangju 500757, South Korea

[2] Saga Univ, Dept Appl Chem, Saga 8408502, Japan

[3] Samsung SDI Co Ltd, Energy Business Div, Dev Team, Cheonan 330300, South Korea

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2008年 / 10卷 / 09期

关键词：

LiFePO4; high rate capability; sol-gel; adipic acid; cathode material; lithium secondary battery;

D O I：

10.1016/j.elecom.2008.06.007

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

LiFePO4 material was synthesized at 670 degrees C in an Ar atmosphere using a sol-gel method. This material showed a well developed XRD pattern (orthorhombic structure, Pnma) without any peaks at 20 = 41 degrees, indicating the absence of FeP or metallic Fe2P impurities. The Li/LiFePO4 cell showed a high initial discharge capacity of more than 150 mA h/g and no capacity decrease until the 70th cycle (>99.9%). This cell also exhibits excellent cycle performance at high current densities of over 30C, without any surface treatment or carbon coating onto the LiFePO4 particles. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1219 / 1221

页数：3

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