Synthesis and Lithium Storage Properties of Hollow Fe2O3/Graphene Nanocomposites

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (3): 630.

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Synthesis and Lithium Storage Properties of Hollow Fe2O3/Graphene Nanocomposites

ZOU Qiong, ZAI Jian-Tao, LIU Ping*, QIAN Xue-Feng*

National Key Laboratory of Metallic Matrix Composite Material, School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China

Received:2010-10-15 Revised:2010-12-21 Online:2011-03-10 Published:2011-02-23
Contact: QIAN Xue-Feng;LIU Ping E-mail:xfqian@sjtu.edu.cn;liupingsjj@sjtu.edu.cn
Supported by:
国家“九七三”计划项目(批准号: 2009CB930400, 2007CB209705)、国家自然科学基金(批准号: 21071097)和高性能陶瓷和超微结构国家重点实验室开放课题基金(批准号: SKL200901SIC)资助.

Abstract

Abstract: Hollow Fe2O3/Graphene nanocomposites were synthesized by a hydrothermal method, and they were characterized by XRD and SEM. A plausible formation mechanism of the composite could be based on the catalytic oxidation of carboxyl et. al. groups of GO in the presence of Fe3+ ions to form GNS, and the released CO2 provided templates for the formation of hollow Fe2O3, and then hollow Fe2O3/Graphene nanocomposites were formed in-situ. The obtained nanocomposites show excellent Li storage performances. After 50 cycles, a capacity of 520 mAh g-1 (437 mAh g-1) was kept at a high current density of 200 mA g-1 (400 mA g-1).

Key words: Fe2O3/GNS nanocomposite, Lithium-ion battery, Hydrothermal, Hollow materials

TrendMD:

ZOU Qiong, ZAI Jian-Tao, LIU Ping*, QIAN Xue-Feng*. Synthesis and Lithium Storage Properties of Hollow Fe2O3/Graphene Nanocomposites[J]. Chem. J. Chinese Universities, 2011, 32(3): 630.

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Synthesis and Lithium Storage Properties of Hollow Fe2O3/Graphene Nanocomposites

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