High-surface-area α-Fe2O3/carbon nanocomposite: one-step synthesis and its highly reversible and enhanced high-rate lithium storage properties

被引：220

作者：

Chou, Shu-Lei ^{[1
,2
]}

Wang, Jia-Zhao ^{[1
,2
]}

Wexler, David ^{[3
]}

Konstantinov, Konstantin ^{[1
,2
]}

Zhong, Chao ^{[1
,2
]}

Liu, Hua-Kun ^{[1
,2
]}

Dou, Shi-Xue ^{[1
]}

机构：

[1] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia

[2] Univ Wollongong, ARC Ctr Excellence Electromat Sci, Wollongong, NSW 2522, Australia

[3] Univ Wollongong, Fac Engn, Wollongong, NSW 2522, Australia

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2010年 / 20卷 / 11期

基金：

澳大利亚研究理事会;

关键词：

ION BATTERY; NANOSTRUCTURED MATERIALS; ENERGY-CONVERSION; IRON; PERFORMANCE; GROWTH; ELECTRODES; OXIDES; FE2O3; SIZE;

D O I：

10.1039/b922237e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hollow-structured alpha-Fe2O3/carbon (HIOC) nanocomposite with a high surface area of around 260 m(2) g(-1) was synthesized by a one-step, in situ, and industrially-oriented spray pyrolysis method using iron lactate and sucrose solution as the precursors. The small alpha-Fe2O3 nanocrystals were highly dispersed inside amorphous carbon to form a carbon nanocomposite. Electrochemical measurements showed that the carbon played an important role in affecting both the cycle life and the rate capability of the electrode. The HIOC composites showed the best electrochemical performance in terms of high capacity (1210 mAh g(-1) at a current density of 0.1 C), enhanced rate capability and excellent cycle stability (720 mAh g(-1) at a current density of 2 C up to 220 cycles). HIOC nanocomposite can also be used in other potential applications, such as in gas sensors, catalysts, and biomedical applications because it is easily dispersed in water and has a high surface area.

引用

页码：2092 / 2098

页数：7

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