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Ionothermal synthesis of Graphene-based Microporous Carbon for Lithium–Sulfur batteries

Abstract

Designing rational accommodation host for sulfur is in great need for the commercial application of lithium-sulfur batteries. Here, a 2D graphene-based microporous carbon substrate (I-GPC) with high conductivity and diverse porous structure was designed via an ionothermal method combined with an activation process. The resulting I-GPC has a specific area as high as 1740.1 m2 g-1 and a hierarchical microporous structure consisting of both smaller microporous (<0.69 nm) and larger microporous (0.8, 1.2nm). 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 mainly 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 other energy storage systems.

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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, Accepted Manuscript
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    Ionothermal synthesis of Graphene-based Microporous Carbon for Lithium–Sulfur batteries

    Y. Zhang, Y. Yang, J. Xie, N. Cui, Z. Pan and C. Hao, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C7NJ04294A

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