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Issue 1, 2014
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Sb–C nanofibers with long cycle life as an anode material for high-performance sodium-ion batteries

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Abstract

Sb–C nanofibers are synthesized successfully through a single-nozzle electrospinning technique and subsequent calcination. The structural and morphological characterizations reveal the uniform nanofiber structure with the Sb nanoparticles embedded homogeneously in the carbon nanofibers. Electrochemical experiments show that the Sb–C nanofiber electrode can deliver large reversible capacity (631 mA h g−1) at C/15, greatly improved rate capability (337 mA h g−1 at 5 C) and excellent cycling stability (90% capacity retention after 400 cycles). The superior electrochemical performances of the Sb–C nanofibers are due to the unique nanofiber structure and uniform distribution of Sb nanoparticles in carbon matrix, which provides a conductive and buffering matrix for effective release of mechanical stress caused by Na ion insertion/extraction and prevent the aggregation of the Sb nanoparticles.

Graphical abstract: Sb–C nanofibers with long cycle life as an anode material for high-performance sodium-ion batteries

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Publication details

The article was received on 31 Aug 2013, accepted on 18 Oct 2013 and first published on 21 Oct 2013


Article type: Communication
DOI: 10.1039/C3EE42944J
Citation: Energy Environ. Sci., 2014,7, 323-328
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    Sb–C nanofibers with long cycle life as an anode material for high-performance sodium-ion batteries

    L. Wu, X. Hu, J. Qian, F. Pei, F. Wu, R. Mao, X. Ai, H. Yang and Y. Cao, Energy Environ. Sci., 2014, 7, 323
    DOI: 10.1039/C3EE42944J

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