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Issue 33, 2017
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Embedding of Mg-doped V2O5 nanoparticles in a carbon matrix to improve their electrochemical properties for high-energy rechargeable lithium batteries

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Abstract

Hierarchical Mg-doped V2O5@carbon (HVC) spheres were fabricated using poly(methacrylic acid) (PMAA) microgel as a microreactor. The monodisperse micron-sized spheres are formed from 200 nm particles, in which primary V2O5 nanoparticles are embedded uniformly in a carbon matrix to form a mulberry-like morphology. The effect of the Mg-doping level on the electrochemical properties of the as-prepared HVC spheres was studied. Benefitting from the unique morphology and chemical pre-insertion of Mg2+ ions, the Mg0.10V2O5@C sample exhibited an excellent rate capability and stable cyclability when operated over the potential range of 1.5–4.0 V (vs. Li+/Li). The results suggest that these porous HVC spheres hold promise for use as high-energy-density cathode materials for rechargeable lithium batteries.

Graphical abstract: Embedding of Mg-doped V2O5 nanoparticles in a carbon matrix to improve their electrochemical properties for high-energy rechargeable lithium batteries

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Publication details

The article was received on 30 Mar 2017, accepted on 23 Jul 2017 and first published on 24 Jul 2017


Article type: Paper
DOI: 10.1039/C7TA02761C
Citation: J. Mater. Chem. A, 2017,5, 17432-17441
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    Embedding of Mg-doped V2O5 nanoparticles in a carbon matrix to improve their electrochemical properties for high-energy rechargeable lithium batteries

    F. Xiao, X. Song, Z. Li, H. Zhang, L. Zhang, G. Lei, Q. Xiao, Z. Hu and Y. Ding, J. Mater. Chem. A, 2017, 5, 17432
    DOI: 10.1039/C7TA02761C

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