3-D mesoporous nano/micro-structured Fe3O4/C as a superior anode material for lithium-ion batteries

被引：44

作者：

Hao, Quanyi ^{[1
,2
]}

Lei, Danni ^{[1
,2
]}

Yin, Xiaoming ^{[1
,2
]}

Zhang, Ming ^{[1
,2
]}

Liu, Shuang ^{[1
,2
]}

Li, Qiuhong ^{[1
,2
]}

Chen, Libao ^{[1
,2
]}

Wang, Taihong ^{[1
,2
]}

机构：

[1] Hunan Univ, Key Lab Micronano Optoelect Devices, Minist Educ, Changsha 410082, Hunan, Peoples R China

[2] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2011年 / 15卷 / 11-12期

基金：

中国国家自然科学基金;

关键词：

Magnetite; Porous; Carbon coating; Anode; Lithium-ion batteries; REVERSIBLE CAPACITY; CYCLIC PERFORMANCE; NANOWIRE ARRAYS; RATE CAPABILITY; ELECTRODE; FABRICATION; NIO;

D O I：

10.1007/s10008-010-1232-4

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Urchin-like nano/micro-structured Fe3O4/C composite has been successfully synthesized using inexpensive starting materials. The urchin-shaped nano/micro-structure consisted of several oriented nanorods. TEM analysis revealed that there is a large number of pores and uniform amorphous carbon distribution at a nanoscale in the nanorods walls. As used in lithium-ion batteries, the mesoporous Fe3O4/C anode delivered a higher reversible capacity of about 830 mAh g(-1) at 0.1 C up to 50 cycles, as well as enhanced high-rate capability compared with urchin-like Fe2O3 and commercial Fe3O4. The improvements can be attributed to the combined effects of the nano/micro-architecture, the porosity, and the ultra-fine carbon matrix, where the three factors would contribute to possess both the merits of nanometer-sized building blocks and micro-sized assemblies and provide high electronic conductivity. It is believed that the results of this study offer new prospects for improving the lithium storage capacity of metal oxides by controlling both architecture and composition.

引用

页码：2563 / 2569

页数：7

共 35 条

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