Corn stalk-derived activated carbon with a stacking sheet-like structure as sulfur cathode supporter for lithium/sulfur batteries

Guanghui Yuan, Fuxing Yin, Yan Zhao, Zhumabay Bakenov, Gongkai Wang, Yongguang Zhang

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

A novel stacking sheet-like carbon (SSC) has been synthesized by carbonizing the corn stalks and composited with sulfur to prepare a cathode for lithium/sulfur batteries. Scanning electronic microscopy observations showed the formation of irregularly interlaced nanosheet-like structure consisting SSC with uniform sulfur coating on its surface. The SSC nanoflakes in the composite act as nanocurrent collectors, favoring the charge carrier ion transport and electrolyte diffusion. The interlaced SSC nanoflakes irregularly stack together and form a three-dimensional network, which is beneficial for both trapping soluble polysulfide intermediates and rendering the electrical conductivity of the composite electrode. A lithium cell employing this sulfur/stacking sheet-like carbon (S/SSC) composite cathode delivered an initial discharge capacity of 965 mAh g−1 at 0.2 C and retained a capacity of 743 mAh g−1 over 100 charge-discharge cycles. Even at 3.2 C rate, the lithium cell with the S/SSC composite cathode demonstrated an excellent rate capability, delivering a highly reversible discharge capacity of 418 mAh g−1.

Original languageEnglish
Pages (from-to)63-69
Number of pages7
JournalIonics
Volume22
Issue number1
DOIs
Publication statusPublished - Jan 1 2016

Fingerprint

lithium sulfur batteries
corn
activated carbon
Sulfur
Activated carbon
Cathodes
sulfur
Carbon
cathodes
carbon
composite materials
Composite materials
Lithium
lithium
polysulfides
Polysulfides
Nanosheets
cells
Charge carriers
accumulators

Keywords

  • Corn stalk
  • Lithium/sulfur battery
  • Sulfur cathode
  • Sulfur/stacking sheet-like carbon composite

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Engineering(all)
  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Corn stalk-derived activated carbon with a stacking sheet-like structure as sulfur cathode supporter for lithium/sulfur batteries. / Yuan, Guanghui; Yin, Fuxing; Zhao, Yan; Bakenov, Zhumabay; Wang, Gongkai; Zhang, Yongguang.

In: Ionics, Vol. 22, No. 1, 01.01.2016, p. 63-69.

Research output: Contribution to journalArticle

Yuan, Guanghui ; Yin, Fuxing ; Zhao, Yan ; Bakenov, Zhumabay ; Wang, Gongkai ; Zhang, Yongguang. / Corn stalk-derived activated carbon with a stacking sheet-like structure as sulfur cathode supporter for lithium/sulfur batteries. In: Ionics. 2016 ; Vol. 22, No. 1. pp. 63-69.
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