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Issue 9, 2011
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Highly ordered mesoporous NiO anode material for lithium ion batteries with an excellent electrochemical performance

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Abstract

In this work, we have synthesized highly ordered mesoporous NiO materials by a nanocasting method using mesoporous silica KIT-6 as the hard templates. Mesoporous NiO particles were characterized by small angle X-ray diffraction (XRD), nitrogen adsorption/desorption, and transmission electron microscopy (TEM). The results demonstrated that the as-prepared mesoporous NiO had an ordered Ia3d symmetric mesostructure, with a high surface area of 96 m2/g. Mesoporous NiO materials were tested as an anode material for lithium ion batteries, exhibiting much lower activation energy (20.75 kJ mol−1) compared to the bulk NiO (45.02 kJ mol−1). We found that the mesoporous NiO electrode has higher lithium intercalation kinetics than its bulk counterpart. The specific capacity of mesoporous NiO after 50 cycles was maintained 680 mAh/g at 0.1 C, which was much higher than that of the commercial bulk NiO (188 mAh/g). Furthermore, at a high rate of 2C, the discharge capacity of mesoporous NiO was as high as 515 mAh/g, demonstrating the potential to be used for high power lithium ion batteries.

Graphical abstract: Highly ordered mesoporous NiO anode material for lithium ion batteries with an excellent electrochemical performance

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Publication details

The article was received on 18 Sep 2010, accepted on 21 Dec 2010 and first published on 12 Jan 2011


Article type: Paper
DOI: 10.1039/C0JM03132A
Citation: J. Mater. Chem., 2011,21, 3046-3052
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    Highly ordered mesoporous NiO anode material for lithium ion batteries with an excellent electrochemical performance

    H. Liu, G. Wang, J. Liu, S. Qiao and H. Ahn, J. Mater. Chem., 2011, 21, 3046
    DOI: 10.1039/C0JM03132A

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