articleAngewandte Chemie International EditionSep 9, 2015Closed access

Hollow Carbon Nanofibers Filled with MnO 2 Nanosheets as Efficient Sulfur Hosts for Lithium–Sulfur Batteries

ZLZhen LiJZJintao ZhangXWXiong Wen Lou

Nanyang Technological University

PubMed
Indexed incrossrefpubmed

Abstract

Lithium-sulfur batteries have been investigated as promising electrochemical-energy storage systems owing to their high theoretical energy density. Sulfur-based cathodes must not only be highly conductive to enhance the utilization of sulfur, but also effectively confine polysulfides to mitigate their dissolution. A new physical and chemical entrapment strategy is based on a highly efficient sulfur host, namely hollow carbon nanofibers (HCFs) filled with MnO2 nanosheets. Benefiting from both the HCFs and birnessite-type MnO2 nanosheets, the MnO2 @HCF hybrid host not only facilitates electron and ion transfer during the redox reactions, but also efficiently prevents polysulfide dissolution. With a high sulfur…

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Topics & keywords

Topics
Keywords
  • Polysulfide
  • Sulfur
  • Dissolution
  • Materials science
  • Electrochemistry
  • Chemical engineering
  • Nanofiber
  • Redox
UN Sustainable Development Goals
  • Affordable and clean energy
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