Structure and electrochemical performance of nanostructured Fe3O4/carbon nanotube composites as anodes for lithium ion batteries

被引：324

作者：

He, Yang ^{[1
]}

Huang, Ling ^{[1
]}

Cai, Jin-Shu ^{[1
]}

Zheng, Xiao-Mei ^{[1
]}

Sun, Shi-Gang ^{[1
]}

机构：

[1] Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 03期

关键词：

Multi-walled carbon nanotubes; Fe3O4; nanoparticles; Composite; Electrochemical properties; Lithium ion batteries; RAMAN-SPECTROSCOPIC CHARACTERIZATION; CARBON NANOTUBES; NANOFIBERS; FE3O4;

D O I：

10.1016/j.electacta.2009.10.014

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Polyvinyl alcohol (PVA) was used as a hydrogen bond functionalizing agent to modify multi-walled carbon nanotubes (CNTs). Nanoparticles of Fe3O4 Were then formed along the sidewalls of the as-modified CNTs by the chemical coprecipitation of Fe2+ and Fe3+ in the presence of CNTs in an alkaline solution. The structure and electrochemical performance of the Fe3O4/CNTs nanocomposite electrodes have been investigated in detail. Electrochemical tests indicated that at the 145th cycle, the CNTs-66.7wt.% Fe3O4 nanocomposite electrode can deliver a high discharge capacity of 656 mAh g(-1) and stable cyclic retention. The improvement of reversible capacity and cyclic performance of the Fe3O4/CNTs nanocomposite could be attributed to the nanosized Fe3O4 particles and the network of CNTs. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1140 / 1144

页数：5

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