title: A Carbon-Sulfur Hybrid with Pomegranate-like Structure for Lithium-Sulfur Batteries.
abstract: A carbon-sulfur hybrid with pomegranate-like core-shell structure, which demonstrates a high rate performance and relatively high cyclic stability, is obtained through carbonization of a carbon precursor in the presence of a sulfur precursor (FeS2 ) and a following oxidation of FeS2 to sulfur by HNO3 . Such a structure effectively protects the sulfur and leaves enough buffer space after Fe(3+) removal and, at the same time, has an interconnected conductive network. The capacity of the obtained hybrid is 450 mA h g(-1) under the current density of 5 C. This work provides a simple strategy to design and prepare various high-performance carbon-sulfur hybrids for lithium-sulfur batteries.
authors.affiliation: Engineering Laboratory for Functionalized Carbon Materials and, Shenzhen Key Laboratory for Graphene-based Materials, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China.|School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.|Department of Chemical and Biomolecular Engineering, Hong Kong University of Science and Technology, Hong Kong, 999077, China.
authors.forename: Yanting
authors.initials: Y
authors.lastname: Shi
authors.affiliation: Engineering Laboratory for Functionalized Carbon Materials and, Shenzhen Key Laboratory for Graphene-based Materials, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China. lv.wei@sz.tsinghua.edu.cn.
authors.forename: Wei
authors.initials: W
authors.lastname: Lv
authors.affiliation: Engineering Laboratory for Functionalized Carbon Materials and, Shenzhen Key Laboratory for Graphene-based Materials, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China.|School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.
authors.forename: Shuzhang
authors.initials: S
authors.lastname: Niu
authors.affiliation: Engineering Laboratory for Functionalized Carbon Materials and, Shenzhen Key Laboratory for Graphene-based Materials, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China.
authors.forename: Yanbing
authors.initials: Y
authors.lastname: He
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Science, Shenyang, 110016, China.
authors.forename: Guangmin
authors.initials: G
authors.lastname: Zhou
authors.affiliation: Department of Chemical and Biomolecular Engineering, Hong Kong University of Science and Technology, Hong Kong, 999077, China. kechengh@ust.hk.
authors.forename: Guohua
authors.initials: G
authors.lastname: Chen
authors.affiliation: Engineering Laboratory for Functionalized Carbon Materials and, Shenzhen Key Laboratory for Graphene-based Materials, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China. libh@mail.sz.tsinghua.edu.cn.
authors.forename: Baohua
authors.identifier: 0000-0002-4876-2659
authors.initials: B
authors.lastname: Li
authors.affiliation: Engineering Laboratory for Functionalized Carbon Materials and, Shenzhen Key Laboratory for Graphene-based Materials, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China.
authors.forename: Quan-Hong
authors.initials: QH
authors.lastname: Yang
authors.affiliation: Engineering Laboratory for Functionalized Carbon Materials and, Shenzhen Key Laboratory for Graphene-based Materials, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China.|School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.
authors.forename: Feiyu
authors.initials: F
authors.lastname: Kang
keywords: FeS2; carbon-sulfur hybrid; core-shell structure; lithium-sulfur batteries; pomegranate-like structure