A Nacre‐Like Carbon Nanotube Sheet for High Performance Li‐Polysulfide Batteries with High Sulfur Loading

  • Zheng‐Ze Pan
    Engineering Laboratory for Functionalized Carbon Materials Shenzhen Key Laboratory for Graphene‐based Materials Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China
  • Wei Lv
    Engineering Laboratory for Functionalized Carbon Materials Shenzhen Key Laboratory for Graphene‐based Materials Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China
  • Yan‐Bing He
    Engineering Laboratory for Functionalized Carbon Materials Shenzhen Key Laboratory for Graphene‐based Materials Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China
  • Yan Zhao
    Engineering Laboratory for Functionalized Carbon Materials Shenzhen Key Laboratory for Graphene‐based Materials Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China
  • Guangmin Zhou
    Department of Materials Science and Engineering Stanford University Stanford CA 94305 USA
  • Liubing Dong
    Engineering Laboratory for Functionalized Carbon Materials Shenzhen Key Laboratory for Graphene‐based Materials Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China
  • Shuzhang Niu
    Tsinghua‐Berkeley Shenzhen Institute (TBSI) Tsinghua University Shenzhen 518055 China
  • Chen Zhang
    School of Marine Science and Technology Tianjin University Tianjin 300072 China
  • Ruiyang Lyu
    Engineering Laboratory for Functionalized Carbon Materials Shenzhen Key Laboratory for Graphene‐based Materials Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China
  • Cong Wang
    Engineering Laboratory for Functionalized Carbon Materials Shenzhen Key Laboratory for Graphene‐based Materials Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China
  • Huifa Shi
    Engineering Laboratory for Functionalized Carbon Materials Shenzhen Key Laboratory for Graphene‐based Materials Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China
  • Wenjie Zhang
    School of Materials Science and Engineering Tsinghua University Beijing 100084 China
  • Feiyu Kang
    Engineering Laboratory for Functionalized Carbon Materials Shenzhen Key Laboratory for Graphene‐based Materials Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China
  • Hirotomo Nishihara
    Institute of Multidisciplinary Research for Advanced Materials Tohoku University Sendai 980−8577 Japan
  • Quan‐Hong Yang
    Engineering Laboratory for Functionalized Carbon Materials Shenzhen Key Laboratory for Graphene‐based Materials Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China

Bibliographic Information

Published
2018-04-19
Resource Type
journal article
Rights Information
  • http://creativecommons.org/licenses/by/4.0/
DOI
  • 10.1002/advs.201800384
Publisher
Wiley

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<jats:title>Abstract</jats:title><jats:p>Lithium‐sulfur (Li‐S) batteries are considered as one of the most promising energy storage systems for next‐generation electric vehicles because of their high‐energy density. However, the poor cyclic stability, especially at a high sulfur loading, is the major obstacles retarding their practical use. Inspired by the nacre structure of an abalone, a similar configuration consisting of layered carbon nanotube (CNT) matrix and compactly embedded sulfur is designed as the cathode for Li‐S batteries, which are realized by a well‐designed unidirectional freeze‐drying approach. The compact and lamellar configuration with closely contacted neighboring CNT layers and the strong interaction between the highly conductive network and polysulfides have realized a high sulfur loading with significantly restrained polysulfide shuttling, resulting in a superior cyclic stability and an excellent rate performance for the produced Li‐S batteries. Typically, with a sulfur loading of 5 mg cm<jats:sup>−2</jats:sup>, the assembled batteries demonstrate discharge capacities of 1236 mAh g<jats:sup>−1</jats:sup> at 0.1 C, 498 mAh g<jats:sup>−1</jats:sup> at 2 C and moreover, when the sulfur loading is further increased to 10 mg cm<jats:sup>−2</jats:sup> coupling with a carbon‐coated separator, a superhigh areal capacity of 11.0 mAh cm<jats:sup>−2</jats:sup> is achieved.</jats:p>

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