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Remarkable High-temperature Li-storage Performance of Few-layer Graphene-anchored Fe3O4 Nanocomposites as Anode

Abstract

An novel and efficient strategy was established to synthesize few-layer graphene-anchored Fe3O4 nanocomposites (FLG-anchored Fe3O4) through a facile ball-milling route followed by annealing treatment. As-prepared FLG-anchored Fe3O4 nanocomposites, as anode material of LIBs, presented remarkable electrochemical performances at a high temperature of 85 °C, i.e., an excellent reversible capacity of 1413 mAh g-1 at a current density of 1.0 A g-1 after 100 cycles and impressive rate performance of 768 mAh g-1 at a large current density of 5.0 A g-1 even after 100 cycles, respectively. Such superior performances could be considered as a comprehensive consequence of following factors: (1) The robust anchor between in-situ synthesized Fe3O4 nanoparticles and few-layer graphene via Fe-O-C linkage maintains structural integrity, enabling excellent cycling stability even at high temperature; (2) Accelerated dynamic diffusion of Li+ ions during lithiation/delithiation under 85 °C leads to decreased polarization effect, producing enhanced reversibility; (3) Enhanced pseudocapacitance behaviour at high temperature holds partial capacity contribution. These attributes enable this material to be a reliable and promising candidate of anode material for heavy-duty Li-ion battery operated under harsh environments.

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Publication details

The article was received on 20 Aug 2017, accepted on 13 Oct 2017 and first published on 13 Oct 2017


Article type: Paper
DOI: 10.1039/C7TA07364J
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Remarkable High-temperature Li-storage Performance of Few-layer Graphene-anchored Fe3O4 Nanocomposites as Anode

    M. Huang, C. Chen, S. Wu and X. Tian, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA07364J

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