Rational synthesis of MnO₂@CMK/S composite as cathode materials for lithium-sulfur batteries

Authors

Jun Liu, Guangdong University of Technology
Chengwen Wang, Guangdong University of Technology
Bin Liu, University of WollongongFollow
Xi Ke, Guangdong University of Technology
Liying Liu, University of Wollongong
Zhicong Shi, Guangdong University of Technology
Haiyan Zhang, Guangdong University of Technology
Zaiping Guo, University of WollongongFollow

RIS ID

113007

Publication Details

Liu, J., Wang, C., Liu, B., Ke, X., Liu, L., Shi, Z., Zhang, H. & Guo, Z. (2017). Rational synthesis of MnO₂@CMK/S composite as cathode materials for lithium-sulfur batteries. Materials Letters, 195 236-239.

Abstract

Lithium-sulfur batteries with a high energy density are promising energy storage devices. The realization of lithium-sulfur batteries is mainly hindered by the dissolution of the intermediate polysulfides. In the present work, a new physical and chemical entrapment method of the polysulfides has been proposed, which used CMK-3 as the carbon scaffolds and a MnO2 coating layer for chemisorption. Such a bi-functional framework provides efficient trapping for the polysulfides, achieving a reversible capacity of 600 mAh g−1 after 100 cycles at 0.1 C with a 73.4 wt% sulfur loading in the composite.