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Efficient Synthesis of Graphene Nanoscrolls for Fabricating Sulfur-Loaded Cathode and Flexible Hybrid Interlayer toward High-Performance Li-S Batteries

  • Yi Guo
  • , Gang Zhao
  • , Naiteng Wu
  • , Yun Zhang*
  • , Mingwu Xiang
  • , Bo Wang
  • , Heng Liu
  • , Hao Wu
  • *Corresponding author for this work
  • College of Materials Science and Engineering
  • School of Chemistry and Chemical Engineering, Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

A modified lyophilization approach is developed and used for highly efficient transformation of 2D graphene oxide sheet into 1D graphene nanoscroll (GNS) with high topological transforming efficiency (∼94%). Because of the unique open tubular structure and large specific surface area (545 m2 g-1), GNS is utilized for the first time as a porous cathode scaffold for encapsulating sulfur with a high loading (81 wt %), and also as a conductive skeleton for assembling MnO2 nanowires into a flexible free-standing hybrid interlayer, both enabling high-rate and long-life Li-S battery.

Original languageEnglish
Pages (from-to)34185-34193
Number of pages9
JournalACS Applied Materials and Interfaces
Volume8
Issue number50
DOIs
StatePublished - 21 Dec 2016
Externally publishedYes

Keywords

  • free-standing hybrid interlayer
  • graphene nanoscroll
  • high sulfur loading
  • large surface area
  • lithium sulfur batteries

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