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Issue 4, 2015
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Vulcanization accelerator enabled sulfurized carbon materials for high capacity and high stability of lithium–sulfur batteries

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Abstract

Sulfurized carbon is a promising candidate for cathode materials in practical lithium–sulfur batteries due to its high and stable capacity retention, extremely low self-discharge, and excellent safety. The main disadvantage is the relatively low sulfur content in sulfurized carbon materials. Borrowing the idea from rubber crosslinking chemistry, here we report the use of a vulcanization accelerator in carbon sulfurization. Vulcanization accelerators significantly improve sulfur content by ∼8 wt%, which results in a remarkable increase in the discharge capacity of corresponding Li–S batteries by ∼120 mA h g−1 while maintaining the outstanding cycling stability and low self-discharge. The effectiveness of this approach and the wide variety of vulcanization accelerator chemistry will pave the way for sulfurized carbon materials towards practical applications in Li–S batteries.

Graphical abstract: Vulcanization accelerator enabled sulfurized carbon materials for high capacity and high stability of lithium–sulfur batteries

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Publication details

The article was received on 04 Nov 2014, accepted on 25 Nov 2014 and first published on 11 Dec 2014


Article type: Communication
DOI: 10.1039/C4TA05938G
Author version available: Download Author version (PDF)
Citation: J. Mater. Chem. A, 2015,3, 1392-1395
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    Vulcanization accelerator enabled sulfurized carbon materials for high capacity and high stability of lithium–sulfur batteries

    H. Chen, C. Wang, C. Hu, J. Zhang, S. Gao, W. Lu and L. Chen, J. Mater. Chem. A, 2015, 3, 1392
    DOI: 10.1039/C4TA05938G

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