title: Graphene Sandwiched by Sulfur-Confined Mesoporous Carbon Nanosheets: A Kinetically Stable Cathode for Li-S Batteries.
abstract: The practical use of lithium-sulfur batteries for the next-generation energy storage, especially the automobiles, was hindered by low electronic conductivity of sulfur and the resulting poor rate capabilities. Here, we report a sulfur-carbon composite by confining S into a graphene sandwiched in mesoporous carbon nanosheets with a two-dimensional ultrathin morphology, suitable mesopore size and large pore volume, and excellent electronic conductivity. Serving as cathode material for a Li-S battery, the elaborately designed S/C composite leads to "kinetically stable" transmissions of Li ions and electrons, triggering a stable electrochemistry and a record-breaking rate performance. In this way, the S/C composite has been proved a promising cathode material for high-rate Li-S batteries targeted at automobile storage.
authors.affiliation: School of Chemistry and Chemical Engineering, Hefei University of Technology , Hefei, 230009, P. R. China.|Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin , Austin, Texas 78712, United States.
authors.forename: Sen
authors.initials: S
authors.lastname: Xin
authors.affiliation: Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin , Austin, Texas 78712, United States.
authors.forename: Ya
authors.initials: Y
authors.lastname: You
authors.affiliation: School of Chemistry and Chemical Engineering, Hefei University of Technology , Hefei, 230009, P. R. China.
authors.forename: Hui-Qin
authors.initials: HQ
authors.lastname: Li
authors.affiliation: Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin , Austin, Texas 78712, United States.
authors.forename: Weidong
authors.initials: W
authors.lastname: Zhou
authors.affiliation: Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin , Austin, Texas 78712, United States.
authors.forename: Yutao
authors.initials: Y
authors.lastname: Li
authors.affiliation: Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin , Austin, Texas 78712, United States.
authors.forename: Leigang
authors.initials: L
authors.lastname: Xue
authors.affiliation: School of Chemistry and Chemical Engineering, Hefei University of Technology , Hefei, 230009, P. R. China.
authors.forename: Huai-Ping
authors.initials: HP
authors.lastname: Cong
keywords: graphene; kinetics; lithium−sulfur battery; mesoporous carbon; rate performance