Issue 4, 2018

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

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

Supplementary files

Article information

Article type
Paper
Submitted
06 Nov 2017
Accepted
07 Jan 2018
First published
08 Jan 2018

New J. Chem., 2018,42, 2483-2490

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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