Magnetite/graphene composites: microwave irradiation synthesis and enhanced cycling and rate performances for lithium ion batteries

Ming Zhang; Danni Lei; Xiaoming Yin; Libao Chen; Qiuhong Li; Yanguo Wang; Taihong Wang

doi:10.1039/C0JM00638F

Magnetite/graphene composites: microwave irradiation synthesis and enhanced cycling and rate performances for lithium ion batteries

Ming Zhang,^a Danni Lei,^a Xiaoming Yin,^a Libao Chen,*^a Qiuhong Li,^a Yanguo Wang^a and Taihong Wang*^a

* Corresponding authors

^a Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education and State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, Changsha, China
E-mail: thwang@hnu.cn, lbchen@hnu.edu.cn

Abstract

By employing microwave irradiation as a heat source, magnetite/graphene composites were synthesized by depositing Fe³⁺ in the interspaces of graphene sheets. The Fe₃O₄ nanoparticles were dispersed on graphene sheets. As anode materials for lithium ion batteries, they showed high reversible capacities, as well as significantly enhanced cycling performances (about 650 mA h g⁻¹ after 50 cycles) and high rate capabilities (350 mA h g⁻¹ at 5 C). The enhancement could be attributed to graphene sheets, which served as electron conductors and buffers. Our results opened a new doorway for the application of graphene sheets to prepare anode materials of lithium ion batteries with superior performances.

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The article was received on 09 Mar 2010, accepted on 01 Apr 2010 and first published on 03 Jun 2010

Article type: Paper

DOI: 10.1039/C0JM00638F

Citation: J. Mater. Chem., 2010,20, 5538-5543

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Magnetite/graphene composites: microwave irradiation synthesis and enhanced cycling and rate performances for lithium ion batteries

M. Zhang, D. Lei, X. Yin, L. Chen, Q. Li, Y. Wang and T. Wang, J. Mater. Chem., 2010, 20, 5538
DOI: 10.1039/C0JM00638F
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Journal of Materials Chemistry

Magnetite/graphene composites: microwave irradiation synthesis and enhanced cycling and rate performances for lithium ion batteries

Abstract

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Magnetite/graphene composites: microwave irradiation synthesis and enhanced cycling and rate performances for lithium ion batteries

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