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Sulfur-graphene composite for rechargeable lithium batteries |
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| Authors: | Jia-Zhao Wang Lin LuMohammad Choucair John A. Stride Xun XuHua-Kun Liu |
| Affiliation: | a Institute for Superconducting and Electronic Materials, University of Wollongong, NSW 2522, Australia b ARC Centre of Excellence for Electromaterials Science, University of Wollongong, NSW 2522, Australia c School of Chemistry, University of New South Wales, Sydney 2052, Australia d Bragg Institute, Australian Nuclear Science and Technology Organisation, PMB 1, Australia |
| Abstract: | Sulfur-graphene (S-GNS) composites have been synthesized by heating a mixture of graphene nanosheets and elemental sulfur. According to field emission electron microscopy, scanning electron microscopy with energy dispersive X-ray mapping, Raman spectroscopy, and thermogravimetric analysis, sulfur particles were uniformly coated onto the surface of the graphene nanosheets. The electrochemical results show that the sulfur-graphene nanosheet composite significantly improved the electrical conductivity, the capacity, and the cycle stability in a lithium cell compared with the bare sulfur electrode. |
| Keywords: | Sulfur-graphene composite Lithium battery Charge/discharge Capacity |
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