Novel interlayer made from Fe3C/carbon nanofiber webs for high performance lithium-sulfur batteries

Jian Qiu Huang, Biao Zhang, Zheng Long Xu, Sara Abouali, Mohammad Akbari Garakani, Jiaqiang Huang, Jang Kyo Kim

Research output: Journal article publicationJournal articleAcademic researchpeer-review

123 Citations (Scopus)

Abstract

A new freestanding Fe3C/carbon nanofiber (CNF) film is developed using a facile one-pot electrospinning method as an interlayer for high performance lithium-sulfur (Li-S) batteries. The interlayer placed between the separator and the sulfur cathode plays many synergistic roles, offering (i) a number of macropores within the nanofiber web to facilitate ion transport and electrolyte penetration, (ii) nitrogen-containing functional groups that entrap soluble polysulfides by strong interatomic attraction, and (iii) much enhanced electron/ion transfer due to the high electrical conductivity of the CNF web. The battery delivers an excellent specific discharge capacity of 893 mA h/g after 100 cycles, maintaining 76% of its initial capacity of 1177 mA h/g. These values are among the highest for those reported recently with similar nanocarbon-based interlayers in terms of rate capability and cyclic stability.
Original languageEnglish
Pages (from-to)43-50
Number of pages8
JournalJournal of Power Sources
Volume285
DOIs
Publication statusPublished - 1 Jul 2015
Externally publishedYes

Keywords

  • Carbon nanofiber
  • Electrospinning
  • Interlayer
  • Lithium-sulfur batteries
  • Nitrogen-containing functional groups

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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