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Facile synthesis of a sulfur/multiwalled carbon nanotube nanocomposite cathode with core–shell structure for lithium rechargeable batteries

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Abstract

A novel sulfur/multiwalled carbon nanotube nanocomposite (S/MWCNT) was prepared by a facile quasi-emulsion template method in an O/W system. Transmission and scanning electronic microscopy show the formation of a highly developed core–shell tubular structure consisting of S/MWCNT composite with uniform sulfur coating on its surface. The homogenous dispersion and integration of MWCNT in the S/MWCNT composite create a highly conductive and mechanically flexible framework, enhancing the electronic conductivity and consequently the rate capability of the material. The S/MWCNT composite cathode could deliver a stable discharge (the fifth cycle) capacity of about 903 mAh g−1 at 0.1 C, 751 mAh g−1 at 0.5 C, and 631 mAh g−1 at 1 C.

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Abbreviations

S/MWCNT:

Sulfur/multiwalled carbon nanotube nanocomposite

MWCNT:

Multiwalled carbon nanotube

XRD:

X-ray diffraction pattern

SEM:

Scanning electron microscopy

TEM:

Transmission electron microscopy

DOL:

1, 3-Dioxolane

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Authors and Affiliations

  1. Department of Chemistry and Chemical Engineering, Ankang University, Ankang, 725000, Shanxi, China

    Guanghui Yuan & Jiming Xiang

Authors
  1. Guanghui Yuan
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  2. Jiming Xiang
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Correspondence to Guanghui Yuan.

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Yuan, G., Xiang, J. Facile synthesis of a sulfur/multiwalled carbon nanotube nanocomposite cathode with core–shell structure for lithium rechargeable batteries. Ionics 19, 1449–1453 (2013). https://doi.org/10.1007/s11581-013-0968-0

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  • DOI: https://doi.org/10.1007/s11581-013-0968-0

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