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

被引：197

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

页码：663 / 666

页数：4

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