High Rate Capability of Fe/FeO/Fe3O4 Composite as Anode Material for Lithium-Ion Batteries

被引：16

作者：

Shi, L. ^{[1
]}

He, Y. D. ^{[1
]}

Xia, X. H. ^{[1
]}

Jian, Z. M. ^{[1
]}

Liu, H. B. ^{[1
]}

机构：

[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Peoples R China

来源：

JOURNAL OF THE IRANIAN CHEMICAL SOCIETY | 2010年 / 7卷 / 03期

关键词：

Fe/FeO/Fe3O4; composite; High rate capability; Anode material; Lithium-ion batteries; ALPHA-FE2O3; INTERCALATION; NANOPARTICLES; FE;

D O I：

10.1007/BF03246062

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Fe/FeO/Fe3O4 composite was synthesized by a simple solid method using ferric citrate and phenolic resin as raw materials. The reaction processes of raw materials mixture were characterized by thermogravimetric analysis (TGA) under nitrogen. X-Ray diffraction (XRD) and scanning electron microscopy (SEM) were used to investigate the structure and morphology of the products. The results showed that the obtained material was octahedral Fe/FeO/Fe3O4 composite with a size of 2-4 mu m. The electrochemical performances of Fe/FeO/Fe3O4 composite as anode material were also evaluated, which exhibited a stable specific capacity of 260.3 mAh g(-1) and an ideal initial coulombic efficiency of 90.8% in the range of 0.05 similar to 3 V at the 5C rate. A good rate capacity of Fe/FeO/Fe3O4 composite electrode was also shown by the charge-discharge testing even at the rate of 60C. The better rate capability of Fe/FeO/Fe3O4 electrode could be measured in higher temperature.

引用

页码：721 / 726

页数：6

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