Corresponding Author

Bo ZHANG(zhangbo2014@tjnu.edu.cn)


In order to investigate the effect of carbon structure on electrochemical performance of sulfur/carbon composite in lithium-sulfur battery, in this paper, sublimation sulfur was incorporated into three types of carbon materials, namely, graphene, carbon black and porous carbon. The three sulfur/carbon composites were characterized by scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET), and X-ray diffraction (XRD) techniques, and their electrochemical performances were also studied. The results showed that the sulfur/porous carbon composite offered an initial discharge capacity of 1623.2 mA·h·g-1 and remained 845 mA·h·g-1 after 100 cycles. Compared with graphene and carbon black, the mesopores and micropores in porous carbon improved the utilization of sulfur, contributing to better electrochemical performance of sulfur.

Graphical Abstract


lithium-sulfur batteries, sulfur/carbon composites, porous carbon materials;graphene, carbon black

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