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Issue 10, 2015
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Multi-walled carbon nanotubes composited with nanomagnetite for anodes in lithium ion batteries

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Abstract

In this work, multi-walled carbon nanotube (MWNT) nanocomposites with homogenously anchored nanomagnetite of 10–20 nm prepared by a hydrothermal-annealing method have been demonstrated to serve as anode materials for lithium ion batteries (LIBs) with a specific capacity of 829 mA h g−1 after 50 cycles at a current density of 100 mA g−1 and a reversible capacity of 686 mA h g−1 at a current density of 200 mA g−1 for the nanocomposites with a weight ratio of 1 : 1, much larger than the specific capacity of 230 mA h g−1 after 50 cycles at a current density of 100 mA g−1 and a reversible capacity of 195 mA h g−1 at a current density of 200 mA g−1 for the MWNTs. The MWNTs in the nanocomposites could efficiently buffer the strain of volume change during lithiation/delithiation and greatly improve the electrical conductivity of the electrodes. The superior electrochemical performances of the Fe3O4/MWNTs were found to originate from the unique conductive network of the MWNTs in the nanocomposites as well as the high capacity from the nanomagnetite.

Graphical abstract: Multi-walled carbon nanotubes composited with nanomagnetite for anodes in lithium ion batteries

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Publication details

The article was received on 25 Nov 2014, accepted on 15 Dec 2014 and first published on 15 Dec 2014


Article type: Paper
DOI: 10.1039/C4RA15228J
Citation: RSC Adv., 2015,5, 7237-7244
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    Multi-walled carbon nanotubes composited with nanomagnetite for anodes in lithium ion batteries

    X. Li, H. Gu, J. Liu, H. Wei, S. Qiu, Y. Fu, H. Lv, G. Lu, Y. Wang and Z. Guo, RSC Adv., 2015, 5, 7237
    DOI: 10.1039/C4RA15228J

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