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Preparation and electrochemical performance of MWCNTs@MnO2 nanocomposite for lithium ion batteries

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  • Special Topic: Nanoenergy and Nanosystem
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Abstract

Tubular nanocomposite with interconnected MnO2 nanoflakes coated on MWCNTs (MWCNTs@MnO2) was fabricated by an aqueous solution method at 80°C. Scanning electron microscopy, X-ray diffraction and galvanostatic charge-discharge tests were used to characterize the structures and electrochemical performances of the as-prepared nanocomposite. The capacity reaches 1233.6 mA h g−1 at a current density of 100 mA g−1 for the first discharge, and it can still maintain a capacity of 633.1 mA h g−1 after 100 charge-discharge cycles. The results show that MWCNTs with good electrical conductivity as anchors of MnO2 can provide fast electron transport channels for MnO2 in the electrochemical reactions, and the as-prepared MWCNTs@MnO2 nanocomposite is a potential anode material for lithium ion batteries.

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Authors and Affiliations

  1. School of Physical Science and Technology, and Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, China

    YingQi Liu, XiuWan Li, ZhiWei Wei, LiPing Zhang, XiuCheng Wei & DeYan He

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  1. YingQi Liu
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  2. XiuWan Li
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  3. ZhiWei Wei
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  4. LiPing Zhang
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  5. XiuCheng Wei
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  6. DeYan He
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Correspondence to DeYan He.

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Liu, Y., Li, X., Wei, Z. et al. Preparation and electrochemical performance of MWCNTs@MnO2 nanocomposite for lithium ion batteries. Sci. China Technol. Sci. 57, 1077–1080 (2014). https://doi.org/10.1007/s11431-014-5468-6

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  • DOI: https://doi.org/10.1007/s11431-014-5468-6

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