Journal article

Catalyzing polysulfide conversion by g-C3N4 in a graphene network for long-life lithium-sulfur batteries

Meng Wang, Qinghua Liang, Junwei Han, Ying Tao, Donghai Liu, Chen Zhang, Wei Lv, Quan-Hong Yang

Nano Research | TSINGHUA UNIV PRESS | Published : 2018

Abstract

The practical application of lithium-sulfur batteries with a high energy density has been plagued by the poor cycling stability of the sulfur cathode, which is a result of the insulating nature of sulfur and the dissolution of polysulfides. Much work has been done to construct nanostructured or doped carbon as a porous or polar host for promising sulfur cathodes, although restricting the polysulfide shuttle effect by improving the redox reaction kinetics is more attractive. Herein, we present a well-designed strategy by introducing graphitic carbon nitride (g-C3N4) into a three-dimensional hierarchical porous graphene assembly to achieve a synergistic combination of confinement and catalyzat..

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University of Melbourne Researchers

Grants

Awarded by National Basic Research Program of China


Awarded by National Natural Science Foundation of China


Funding Acknowledgements

This work was supported by the National Basic Research Program of China (No. 2014CB932400). Q.-H. Y. is grateful for the support of the National Natural Science Foundation of China (No. 51525204) and Y. T. acknowledges support from the National Natural Science Foundation of China (No. 51702229).