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Issue 59, 2015
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A new method to prepare vanadium oxide nano-urchins as a cathode for lithium ion batteries

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Abstract

Urchin-like vanadium oxide nanotube clusters, abbreviated to VOx-NUs, were synthesized using a new method. Vanadium pentoxide, having a layered structure, was modified by lithium fluoride (LiF) and transformed into bi-phase lithium vanadate as the inorganic precursor. Then, VOx-NUs were prepared by hydrothermal reaction with dodecylamine as a template. This is different from other molecular assembly methods reported. VOx-NUs-350 nano clusters were obtained by annealing VOx-NUs at a temperature of 350 °C in air. Both samples were identified as three dimensional urchin-like nano clusters. Based on the characterization data obtained, a formation mechanism was established. By simply varying the LiF stoichiometric ratio, the nano tube density of the VOx-NUs could be controlled. VOx-NUs presented a higher initial rate capacity of 400 mA h g−1 and VOx-NUs-350 maintained a better capacity of 150 mA h g−1 after 50 cycles at a 100 mA g−1 current density between 1.5 and 4 V versus Li/Li+.

Graphical abstract: A new method to prepare vanadium oxide nano-urchins as a cathode for lithium ion batteries

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Publication details

The article was received on 09 Feb 2015, accepted on 08 May 2015 and first published on 08 May 2015


Article type: Paper
DOI: 10.1039/C5RA02508G
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RSC Adv., 2015,5, 47522-47528

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    A new method to prepare vanadium oxide nano-urchins as a cathode for lithium ion batteries

    J. Wang, C. Cui, G. Gao, X. Zhou, J. Wu, H. Yang, Q. Li and G. Wu, RSC Adv., 2015, 5, 47522
    DOI: 10.1039/C5RA02508G

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