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Issue 4, 2018
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Ionothermal synthesis of graphene-based microporous carbon for lithium–sulfur batteries

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Abstract

Designing a rational accommodating host for sulfur is in great demand for the commercial application of lithium–sulfur batteries. Herein, a 2D graphene-based microporous carbon substrate (I-GPC) with a high conductivity and diverse porous structure was designed via an ionothermal method combined with an activation process. The resultant I-GPC has a specific area as high as 1740.1 m2 g−1 and a hierarchical microporous structure consisting of both smaller micropores (<0.69 nm) and larger micropores (0.8 and 1.2 nm). The S/I-GPC composite presents an excellent electrochemical performance with a high initial discharge capacity up to 1510 mA h g−1 at 0.1C and an impressive cycling stability of 625.8 mA h g−1 after 150 cycles at 1C. The remarkable electrochemical performances are primarily attributed to the diverse microporous structure of I-GPC with high conductivity. The ionothermal method and rational design of the carbon material provide us with new opportunities for the development of other energy storage systems.

Graphical abstract: Ionothermal synthesis of graphene-based microporous carbon for lithium–sulfur batteries

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Publication details

The article was received on 06 Nov 2017, accepted on 07 Jan 2018 and first published on 08 Jan 2018


Article type: Paper
DOI: 10.1039/C7NJ04294A
Citation: New J. Chem., 2018,42, 2483-2490
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    Ionothermal synthesis of graphene-based microporous carbon for lithium–sulfur batteries

    Y. Zhang, Y. Yan, J. Xie, N. Cui, Z. Pan and C. Hao, New J. Chem., 2018, 42, 2483
    DOI: 10.1039/C7NJ04294A

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