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Achieving high-performance room-temperature sodium−sulfur batteries with S@interconnected mesoporous carbon hollow nanospheres

Journal Article


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Abstract


  • Despite the high theoretical capacity of the sodium-sulfur battery, its application is seriously restrained by the challenges

    due to its low sulfur electroactivity and accelerated shuttle effect, which lead to low accessible capacity and fast decay. Herein, an elaborate

    carbon framework, interconnected mesoporous hollow carbon nanospheres, is reported as an effective sulfur host to achieve excellent

    electrochemical performance. Based on in-situ synchrotron X-ray diffraction, the mechanism of the room temperature Na/S battery is

    proposed to be reversible reactions between S8 and Na2S4, corresponding to a theoretical capacity of 418 mAh g-1. The cell is capable of

    achieving high capacity retention of ~ 88.8% over 200 cycles, and superior rate capability with reversible capacity of ~ 390 and 127 mAh g-

    1 at 0.1 and 5 A g-1, respectively.

Publication Date


  • 2016

Citation


  • Wang, Y., Yang, J., Lai, W., Chou, S., Gu, Q., Liu, H. Kun., Zhao, D. & Dou, S. Xue. (2016). Achieving high-performance room-temperature sodium−sulfur batteries with S@interconnected mesoporous carbon hollow nanospheres. Journal of the American Chemical Society, 138 16576-16579.

Scopus Eid


  • 2-s2.0-85008366308

Ro Full-text Url


  • http://ro.uow.edu.au/context/aiimpapers/article/3305/type/native/viewcontent

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2283

Number Of Pages


  • 3

Start Page


  • 16576

End Page


  • 16579

Volume


  • 138

Abstract


  • Despite the high theoretical capacity of the sodium-sulfur battery, its application is seriously restrained by the challenges

    due to its low sulfur electroactivity and accelerated shuttle effect, which lead to low accessible capacity and fast decay. Herein, an elaborate

    carbon framework, interconnected mesoporous hollow carbon nanospheres, is reported as an effective sulfur host to achieve excellent

    electrochemical performance. Based on in-situ synchrotron X-ray diffraction, the mechanism of the room temperature Na/S battery is

    proposed to be reversible reactions between S8 and Na2S4, corresponding to a theoretical capacity of 418 mAh g-1. The cell is capable of

    achieving high capacity retention of ~ 88.8% over 200 cycles, and superior rate capability with reversible capacity of ~ 390 and 127 mAh g-

    1 at 0.1 and 5 A g-1, respectively.

Publication Date


  • 2016

Citation


  • Wang, Y., Yang, J., Lai, W., Chou, S., Gu, Q., Liu, H. Kun., Zhao, D. & Dou, S. Xue. (2016). Achieving high-performance room-temperature sodium−sulfur batteries with S@interconnected mesoporous carbon hollow nanospheres. Journal of the American Chemical Society, 138 16576-16579.

Scopus Eid


  • 2-s2.0-85008366308

Ro Full-text Url


  • http://ro.uow.edu.au/context/aiimpapers/article/3305/type/native/viewcontent

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2283

Number Of Pages


  • 3

Start Page


  • 16576

End Page


  • 16579

Volume


  • 138