Enhanced Reaction Kinetic of Fe3O4-graphite Nanofiber Composite Electrode for Lithium Ion Batteries

被引：6

作者：

Wang, Wan Lin ^{[1
]}

Park, Ju-Young ^{[1
]}

Gu, Hal-Bon ^{[1
]}

机构：

[1] Chonnam Natl Univ, Dept Elect Engn, Gwangju 500757, South Korea

来源：

TRANSACTIONS ON ELECTRICAL AND ELECTRONIC MATERIALS | 2014年 / 15卷 / 06期

关键词：

Fe3O4; Composite; Electrochemical performance; Graphite nanofiber; Lithium ion diffusion;

D O I：

10.4313/TEEM.2014.15.6.338

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A Fe3O4-graphite nanofiber composite for use as an anode material was successfully synthesized by calcining Fe2O3 and graphite nanofiber (GNF) together in a N-2 atmosphere. Using this Fe3O4-GNF composite in a lithium ion battery resulted in a higher lithium storage capacity than that obtained using Fe3O4-graphite (Fe3O4-G). The Fe3O4-GNF (10 wt%) electrode exhibited a higher lithium ion diffusion coefficient (2.29x10(-9) cm(2) s(-1)) than did the Fe3O4-G (10%) (3.17x10(-10) cm(2) s(-1)). At a current density of 100 mA g(-1), the Fe3O4-GNF (10 wt%) anode showed a higher reversible capacity (1,031 mAh g(-1)) than did the Fe3O4-G (10%) anode (799 mAh g(-1)). Moreover, the Fe(3)O(4)GNF electrodes showed good cycling performance without the addition of a conductive material.

引用

页码：338 / 343

页数：6

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