A facile fabrication of Fe3O4/graphene nanosheets for lithium-ion battery
Date
2014
Authors
Li, Y.
Zhu, S.
Yu, Z.
Meng, Q.
Liu, Q.
Gu, J.
Zhang, W.
Lu, T.
Zhu, C.
Guo, Z.
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Journal article
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SCIENCE OF ADVANCED MATERIALS, 2014; 6(2):283-289
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Abstract
In this study, Fe3O4/graphene nanosheets (Fe3O4/GNSs) nanocomposite was synthesized by using the combinationof simple hydrothermal treatment and calcination. It was found Fe3O4 nanoparticles with diameter of∼15 nm were synthesized and uniformly dispersed on the surface of graphene nanosheets (GNSs). When our cost-effective Fe3O4/GNSs was employed as an anode material in lithium-ion battery, it exhibited a highreversible capacity of 740 mA h/g after 100 cycles at a current density of 100 mA/g. This high performance is attributed to the following reasons: (i) the nanoparticles down to ∼15 nm act not only as electrochemical activesites but as spacers, (ii) GNSs that carry the nanoparticles enhance electron transport by providing conductive pathways, and (iii) Fe3O4/GNSs creates a three-dimensional architecture that effectively facilitates ion diffusion and lithium-ion storage. This finding would open up an efficient route for synthesis and application of GNSs hybrids as anode materials for lithium-ion batteries of high performance.
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Copyright 2014 American Scientific Publishers.