A novel network composite cathode of LiFePO4/multiwalled carbon nanotubes with high rate capability for lithium ion batteries

被引：195
|
作者：
Li, Xinlu [1 ]
Kang, Feiyu [1 ]
Bai, Xinde [1 ]
Shen, Wanci [1 ]
机构：
[1] Tsinghua Univ, Dept Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2007年 / 9卷 / 04期
关键词：
multiwalled carbon nanotubes; electron conducting; cathode; lithium ion batteries;
D O I：
10.1016/j.elecom.2006.10.050
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A novel network composite cathode was prepared by mixing LiFePO4 particles with multiwalled carbon nanotubes for high rate capability. LiFePO4 particles were connected by multiwalled carbon nanotubes to form a three-dimensional network wiring. The web structure can improve electron transport and electrochemical activity effectively. The initial discharge capacity was improved to be 155 mA h/ g at C/10 rate (0.05 mA/cm(2)) and 146 mA h/g at 1C rate. The comparative investigation on MWCNTs and acetylene black as a conducting additive in LiFePO4 proved that MWCNTs addition was an effective way to increase rate capability and cycle efficiency. (C) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：663 / 666
页数：4
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