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Issue 13, 2017
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High sulfur content microporous carbon coated sulfur composites synthesized via in situ oxidation of metal sulfide for high-performance Li/S batteries

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Abstract

Good progress has been made in improving lithium sulfur batteries through trapping sulfur in porous carbon materials by controlling the pore size. However, microporous carbon/sulfur composites suffer from lower sulfur contents through the traditional sulfur loading methods. In this paper, we present an effective and facile approach to prepare a double-hollow-sphere structured microporous carbon coated sulfur composite by in situ oxidizing the microporous carbon coated metal sulfide precursor. The composite efficiently traps sulfur inside the microporous-walled hollow carbon sphere. With the appropriate sulfur content ranging from 55 wt% to 75 wt%, the composites demonstrate promising cycling performance. The composites deliver a capacity retention of 96.11% at 0.2C after 100 cycles, and a relatively low decay rate of 0.05% per cycle after 1000 cycles at 1C.

Graphical abstract: High sulfur content microporous carbon coated sulfur composites synthesized via in situ oxidation of metal sulfide for high-performance Li/S batteries

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Publication details

The article was received on 25 Nov 2016, accepted on 27 Dec 2016 and first published on 29 Dec 2016


Article type: Paper
DOI: 10.1039/C6TA10163A
Citation: J. Mater. Chem. A, 2017,5, 6052-6059
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    High sulfur content microporous carbon coated sulfur composites synthesized via in situ oxidation of metal sulfide for high-performance Li/S batteries

    Q. Wang, Z. Wang, C. Li and D. Gu, J. Mater. Chem. A, 2017, 5, 6052
    DOI: 10.1039/C6TA10163A

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