title: Superior electrochemical performance of sulfur/graphene nanocomposite material for high-capacity lithium-sulfur batteries.
abstract: Sulfur/graphene nanocomposite material has been prepared by incorporating sulfur into the graphene frameworks through a melting process. Field-emission scanning electron microscope analysis shows a homogeneous distribution of sulfur in the graphene nanosheet matrix. The sulfur/graphene nanocomposite exhibits a super-high lithium-storage capacity of 1580 mA h g(-1) and a satisfactory cycling performance in lithium-sulfur cells. The enhancement of the reversible capacity and cycle life could be attributed to the flexible graphene nanosheet matrix, which acts as a conducting medium and a physical buffer to cushion the volume change of sulfur during the lithiation and delithiation process. Graphene-based nanocomposites can significantly improve the electrochemical performance of lithium-sulfur batteries.
authors.affiliation: Centre for Clean Energy Technology, School of Chemistry and Forensic Science, University of Technology Sydney, Sydney, NSW 2007, Australia. Bei.Wang-1@student.uts.edu.au
authors.forename: Bei
authors.initials: B
authors.lastname: Wang
authors.forename: Kefei
authors.initials: K
authors.lastname: Li
authors.forename: Dawei
authors.initials: D
authors.lastname: Su
authors.forename: Hyojun
authors.initials: H
authors.lastname: Ahn
authors.forename: Guoxiu
authors.initials: G
authors.lastname: Wang