Coaxial Carbon/Metal Oxide/Aligned Carbon Nanotube Arrays as High-Performance Anodes for Lithium Ion Batteries

Authors

  • Dr. Fengliu Lou,

    1. Department of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælands vei 4, 7491 Trondheim (Norway), Fax: (+47)73595047
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  • Dr. Haitao Zhou,

    1. Department of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælands vei 4, 7491 Trondheim (Norway), Fax: (+47)73595047
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  • Dr. Trung Dung Tran,

    1. Department of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælands vei 4, 7491 Trondheim (Norway), Fax: (+47)73595047
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  • Marthe Emelie Melandsø Buan,

    1. Department of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælands vei 4, 7491 Trondheim (Norway), Fax: (+47)73595047
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  • Prof. Fride Vullum-Bruer,

    1. Department of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælands vei 4, 7491 Trondheim (Norway), Fax: (+47)73595047
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  • Prof. Magnus Rønning,

    1. Department of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælands vei 4, 7491 Trondheim (Norway), Fax: (+47)73595047
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  • Prof. John Charles Walmsley,

    1. Department of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælands vei 4, 7491 Trondheim (Norway), Fax: (+47)73595047
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  • Prof. De Chen

    Corresponding author
    1. Department of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælands vei 4, 7491 Trondheim (Norway), Fax: (+47)73595047
    • Department of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælands vei 4, 7491 Trondheim (Norway), Fax: (+47)73595047

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Abstract

Invited for this month′s cover is the group of Prof. D. Chen at the Norwegian University of Science and Technology. The image shows how the aggregation of carbon/metal oxide core–shell arrays, which are used as anodes for lithium ion batteries, can be avoided—through carbon coating, as a result of which carbon/metal oxide/carbon sandwich arrays are formed. The Full Paper itself is available at 10.1002/cssc.201300461

What are the main challenges in the broad area of your research?

12Lithium ion batteries have attracted significant attention for portable electronic devices and are being considered for electric vehicles and smart grids. The major challenge is the development of batteries with improved specific capacity, prolonged cyclic stability, enhanced rate capability as well as meeting environment constraints and low costs.

Scheme 1.

Top: Dr. F. Lou, Dr. H. Zhou, Dr. T. D. Tran, M. E. Melandsø Buan Bottom: Prof. F. Vullum-Bruer, Prof. M. Rønning, Prof. J. C. Walmsley, and Prof. D. Chen*

Scheme 2.

Department of Chemical Engineering Norwegian University of Science and Technology Sem Sælands vei 4, 7491 Trondheim, Norway Fax: (+47)73595047 E-mail: chen@chemeng.ntnu.no

What is the most significant result of this study?

Carbon/metal oxide/carbon sandwich arrays were designed and synthesized for the first time as anode for lithium ion batteries. They show improved lithium ion storage performance compared to carbon/metal oxide core–shell arrays by preventing aggregation and providing a more stable solid electrolyte interface film.

What other topics are you working on at the moment?

Our group is engaged in the development of electrochemical energy storage devices combining the advantages of supercapacitors and batteries by utilizing 3D-aligned carbon nanotube-based electrodes. This involves the development, characterization, and analysis of aligned carbon nanotube-based 3D electrodes, such as conducting polymers, metal oxides, Sn, and Si-coated aligned carbon nanotubes.

Acknowledgements

We thank Statoil, Zhengzhou Research Institute of Chalco, NTNU Nanolab, and the European Community’s Seventh Framework Programme for financial support.

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